Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
Area code 641 prefixes
584 of the 786 possible NXX blocks are assigned in area code 641 (74.3% of capacity), spread across 223 rate centers and 73 holders. The largest holders are WINDSTREAM IOWA COMMUNICATIONS, INC. (60 blocks, 10.3%), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA (46 blocks, 7.9%), UNITED STATES CELLULAR - IA (39 blocks, 6.7%). Grouped by brand, Windstream accounts for 124 blocks; brand-attributable holders cover 59% of the code, and the rest are CLECs, VoIP wholesalers and regional carriers that trade under their own names. The assignment records here run from 2001-02-09 to 2026-06-11, with 38 blocks handed out in 2024 alone. 418 blocks (72%) are in thousands-block pooling, meaning the block is shared between carriers in 1,000-number lots rather than held whole – which is why a single NXX can serve several carriers at once. 64 were growth assignments – additional blocks to a carrier that had already filled its earlier ones.
584 assigned blocks of 786
223 rate centers
73 holders of record
72% in thousands-block pooling
Largest holders in 641
| Holder of record, as NANPA names it | Brand | Blocks | Share |
|---|---|---|---|
| WINDSTREAM IOWA COMMUNICATIONS, INC. | Windstream | 60 | 10.3% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | Verizon | 46 | 7.9% |
| UNITED STATES CELLULAR - IA | – | 39 | 6.7% |
| WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH | Windstream | 32 | 5.5% |
| QWEST CORPORATION | Lumen | 30 | 5.1% |
| ONVOY SPECTRUM, LLC | Charter | 29 | 5% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 28 | 4.8% |
| WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS | Windstream | 28 | 4.8% |
| FARMERS TEL. CO. | – | 28 | 4.8% |
| T-MOBILE USA, INC. | T-Mobile | 23 | 3.9% |
| ONVOY, LLC - IA | Onvoy | 22 | 3.8% |
| WINNEBAGO COOP. TEL. ASSN. - IA | – | 18 | 3.1% |
Names are printed as they appear in the assignment records, which is the legal entity rather than the brand. Holding a block is not the same as serving the numbers in it: portability moves numbers between carriers and pooling splits a block between several.
Rate centers with their own page
Rate centers where at least three blocks are assigned, excluding the numbered metro zone codes. The remainder are in the full table below.
MASON CITY 20NEW HAVEN 17MARSHALLTN 16OTTUMWA 15PELLA 12OSKALOOSA 12NEWHAMPTON 12CHARLES CY 11NEWTON 10FAIRFIELD 9GRINNELL 9KNOXVILLE 8LTL CEDAR 8IOWA FALLS 8OSCEOLA 7CRESTON 6CENTERVL 6CLEAR LAKE 6CHARITON 5FORESTCITY 5TOLEDO 5LENOX 5HAMPTON 5GREENFIELD 4BRITT 4SIGOURNEY 4MOUNT AYR 4MANLY 4OSAGE 4NORTHWOOD 4GARNER 4BLOOMFIELD 3FONTANELLE 3NASHUA 3ACKLEY 3THOMPSON 3GUTHRIECTR 3CORNING 3KLEMME 3MELBOURNE 3CORYDON 3BUFFALOCTR 3LATIMER 3JOICE 3LAKE MILLS 3ST ANSGAR 3ALBIA 3ELDORA 3
All 584 assigned blocks
One row per NXX. “Pooled” means carriers draw 1,000-number lots from the block rather than holding all 10,000, so a pooled prefix can belong to several carriers at once. “Not in service” means assigned but not yet open for calls – a caller ID from one of those is necessarily spoofed. The holder column gives the brand where the legal entity maps to one; the full legal names are in the holders table above, exactly as NANPA records them.
| Prefix | Holder of record | Rate center | Assigned | Pooled | In service |
|---|---|---|---|---|---|
| 641-200 | Bandwidth | CHARLES CY | 2018-06-29 | yes | yes |
| 641-201 | T-Mobile | MASON CITY | 2001-04-09 | yes | yes |
| 641-202 | UNITED STATES CELLULAR - IA | CRESTON | 2001-02-14 | yes | yes |
| 641-203 | UNITED STATES CELLULAR - IA | CHARITON | 2001-02-14 | yes | yes |
| 641-204 | T-Mobile | PELLA | 2004-08-17 | yes | yes |
| 641-205 | LOCAL TELEPHONE DATA SERVICES CORP. | KNOXVILLE | – | yes | yes |
| 641-206 | AT&T | OSCEOLA | 2017-08-17 | yes | yes |
| 641-207 | LOCAL TELEPHONE DATA SERVICES CORP. | KEOTA | 2004-01-14 | yes | yes |
| 641-208 | Verizon | BLOOMFIELD | 2004-03-01 | yes | yes |
| 641-209 | LOCAL TELEPHONE DATA SERVICES CORP. | FAIRFIELD | – | yes | yes |
| 641-210 | T-Mobile | MASON CITY | 2001-08-02 | yes | yes |
| 641-212 | Windstream | GREENFIELD | 2015-06-25 | yes | yes |
| 641-213 | FARMERS TEL. CO. | NEW HAVEN | 2006-10-16 | – | yes |
| 641-214 | Verizon | DAVIS CITY | 2020-08-10 | yes | yes |
| 641-215 | Telnyx | OSKALOOSA | – | yes | yes |
| 641-216 | UNITED STATES CELLULAR - IA | CENTERVL | – | yes | yes |
| 641-217 | Windstream | CHARITON | – | yes | yes |
| 641-218 | UNITED STATES CELLULAR - IA | KNOXVILLE | – | yes | yes |
| 641-219 | Verizon | CHARITON | 2020-10-09 | yes | yes |
| 641-220 | Verizon | CHARLES CY | – | yes | yes |
| 641-221 | UNITED STATES CELLULAR - IA | GREENFIELD | 2003-04-29 | yes | yes |
| 641-222 | FRACTEL, LLC | BRITT | 2020-01-09 | yes | yes |
| 641-223 | Windstream | OSCEOLA | – | yes | yes |
| 641-224 | LOCAL TELEPHONE DATA SERVICES CORP. | SIGOURNEY | 2001-09-12 | yes | yes |
| 641-225 | LOCAL TELEPHONE DATA SERVICES CORP. | EDDYVILLE | 2001-09-12 | yes | yes |
| 641-226 | AT&T | OTTUMWA | 2001-07-11 | yes | yes |
| 641-227 | PARTNER COMMUNICATIONS COOPERATIVE | BAXTER | – | – | yes |
| 641-228 | Lumen | CHARLES CY | – | yes | yes |
| 641-229 | Verizon | NEWHAMPTON | 2004-05-06 | yes | yes |
| 641-230 | AT&T | PELLA | 2001-06-05 | yes | yes |
| 641-231 | Verizon | CLEAR LAKE | 2001-08-09 | yes | yes |
| 641-232 | AT&T | LEIGHTON | 2001-07-11 | yes | yes |
| 641-233 | T-Mobile | FAIRFIELD | 2001-05-15 | yes | yes |
| 641-234 | IOWA RSA 2 LIMITED PARTNERSHIP DBA CHAT MOBILITY | MOUNT AYR | 2003-09-25 | – | yes |
| 641-235 | FARMERS TEL. CO. | NEW HAVEN | 2006-05-01 | – | yes |
| 641-236 | Windstream | GRINNELL | – | – | yes |
| 641-237 | FARMERS TEL. CO. | NEW HAVEN | 2006-10-16 | – | yes |
| 641-238 | Onvoy | GENEVA | – | yes | yes |
| 641-239 | AT&T | AFTON | 2021-03-03 | yes | yes |
| 641-240 | AT&T | UNIONVILLE | 2021-07-22 | yes | yes |
| 641-241 | AT&T | FONTANELLE | 2021-05-25 | yes | yes |
| 641-242 | MCC TELEPHONY OF IOWA, LLC - IA | BLOOMFIELD | 2010-03-08 | yes | yes |
| 641-243 | Lumen | MASON CITY | 2009-10-26 | yes | yes |
| 641-244 | AT&T | OTTUMWA | 2016-06-02 | yes | yes |
| 641-245 | AT&T | PRESCOTT | 2021-05-25 | yes | yes |
| 641-246 | AT&T | NORA SPG | 2021-07-19 | – | yes |
| 641-247 | UNITED STATES CELLULAR - IA | FONTANELLE | 2009-01-13 | yes | yes |
| 641-248 | AT&T | OLLIE | 2021-05-25 | yes | yes |
| 641-249 | AT&T | LINEVILLE | 2021-07-19 | – | yes |
| 641-250 | Lumen | MANLY | 2022-12-15 | yes | yes |
| 641-251 | T-Mobile | FORESTCITY | 2005-12-31 | yes | yes |
| 641-252 | AT&T | DUMONT | 2021-12-03 | yes | yes |
| 641-253 | AT&T | BRISTOW | 2022-02-22 | – | yes |
| 641-254 | Lumen | NASHUA | 2022-12-15 | yes | yes |
| 641-255 | T-Mobile | MASON CITY | 2022-04-28 | yes | yes |
| 641-256 | AT&T | CRESTON | 2023-11-27 | yes | yes |
| 641-257 | Lumen | CHARLES CY | – | yes | yes |
| 641-258 | TON80 COMMUNICATIONS, LLC | ADAIR | 2022-02-21 | yes | yes |
| 641-259 | Windstream | MONROE | – | yes | yes |
| 641-260 | Verizon | GRINNELL | – | yes | yes |
| 641-261 | T-Mobile | TOLEDO | 2022-04-28 | yes | yes |
| 641-262 | FARMERS TEL. CO. | NEW HAVEN | 2006-05-01 | – | yes |
| 641-263 | AUREON COMMUNICATIONS, LLC | MORAVIA | 2024-01-22 | yes | yes |
| 641-264 | FARMERS TEL. CO. | LTL CEDAR | 2006-05-01 | – | yes |
| 641-265 | Charter | ATTICA | 2024-05-01 | yes | yes |
| 641-266 | TON80 COMMUNICATIONS, LLC | ACKLEY | 2022-02-21 | yes | yes |
| 641-267 | Charter | CHILLICOTH | 2024-05-01 | yes | yes |
| 641-268 | AUREON COMMUNICATIONS, LLC | LACONA | 2022-07-28 | yes | yes |
| 641-269 | Windstream | GRINNELL | – | – | yes |
| 641-270 | Charter | CINCINNATI | 2024-05-01 | yes | yes |
| 641-271 | Charter | CLEARFIELD | 2024-05-01 | yes | yes |
| 641-272 | TON80 COMMUNICATIONS, LLC | BRIDGEWTR | 2022-03-10 | yes | yes |
| 641-273 | Charter | DIAGONAL | 2024-05-01 | yes | yes |
| 641-274 | AT&T | LOVILIA | 2020-09-21 | yes | yes |
| 641-275 | AT&T | NEWTON | 2001-03-20 | yes | yes |
| 641-276 | Charter | AGENCY | 2019-11-05 | yes | yes |
| 641-277 | AT&T | OTTUMWA | 2020-08-05 | yes | yes |
| 641-278 | Windstream | CRESTON | 2007-08-21 | yes | yes |
| 641-279 | Charter | DOUDS | 2024-05-06 | yes | yes |
| 641-280 | Charter | LUCAS | 2024-05-20 | yes | yes |
| 641-281 | STRATUS NETWORKS | CHARLES CY | 2020-12-09 | yes | yes |
| 641-282 | AT&T | SOUTHADAMS | 2021-05-27 | yes | yes |
| 641-283 | Charter | ELDON | 2024-05-06 | yes | yes |
| 641-284 | Charter | FARSON | 2024-05-06 | yes | yes |
| 641-285 | Charter | HEDRICK | 2024-05-06 | yes | yes |
| 641-286 | Charter | KELLERTON | 2024-05-06 | yes | yes |
| 641-287 | Charter | PEORIA | 2024-05-22 | yes | yes |
| 641-288 | AT&T | AMUND | 2021-05-25 | yes | yes |
| 641-289 | UNITED STATES CELLULAR - IA | LAMONI | 2009-06-03 | yes | yes |
| 641-290 | Dish | MILO | 2022-07-29 | yes | yes |
| 641-291 | Charter | PLANO | 2024-05-22 | yes | yes |
| 641-292 | Charter | LIBERTYCTR | 2024-05-06 | yes | yes |
| 641-293 | WINNEBAGO COOP. TEL. ASSN. - IA | SO EMMONS | – | – | yes |
| 641-294 | Charter | RUSSELL | 2024-05-22 | yes | yes |
| 641-295 | UNITED STATES CELLULAR - IA | OSKALOOSA | 2002-02-25 | yes | yes |
| 641-296 | Charter | NEWVIRGINI | 2024-05-20 | yes | yes |
| 641-297 | FMTC-I35, INC. D/B/A OMNITEL COMMUNICATIONS | ST MARYS | – | – | yes |
| 641-298 | Frontier | AMUND | – | yes | yes |
| 641-299 | Charter | SHANNON CY | 2024-05-22 | yes | yes |
| 641-300 | FRACTEL, LLC | OSAGE | 2019-12-27 | yes | yes |
| 641-301 | Charter | MARTENSDL | 2024-05-20 | yes | yes |
| 641-302 | Dish | RHODES | 2023-05-11 | yes | yes |
| 641-303 | MCC TELEPHONY OF IOWA, LLC - IA | STATE CTR | 2023-10-25 | yes | yes |
| 641-304 | Verizon | LENOX | 2024-08-27 | yes | yes |
| 641-305 | MCC TELEPHONY OF IOWA, LLC - IA | MELROSE | 2025-04-21 | yes | yes |
| 641-306 | Lumen | THOMPSON | 2026-04-22 | yes | yes |
| 641-307 | Windstream | GUTHRIECTR | 2016-08-31 | yes | yes |
| 641-308 | FARMERS TEL. CO. | NEW HAVEN | 2006-10-16 | – | yes |
| 641-309 | FARMERS TEL. CO. | NEW HAVEN | 2006-10-16 | – | yes |
| 641-310 | Onvoy | MARSHALLTN | 2024-03-08 | yes | yes |
| 641-315 | OMNITEL COMMUNICATIONS, INC. - IA | MARBLEROCK | – | yes | yes |
| 641-316 | Onvoy | IOWA FALLS | 2005-02-01 | yes | yes |
| 641-317 | GREENWAY COMMUNICATIONS L.L.C. - IA | KANAWHA | 2011-04-19 | yes | yes |
| 641-318 | T-Mobile | KNOXVILLE | – | – | yes |
| 641-321 | Lumen | MOUNT AYR | 2017-12-12 | yes | yes |
| 641-322 | Frontier | CORNING | – | yes | yes |
| 641-323 | WINNEBAGO COOPERATIVE TELEPHONE ASSOCIATION - IA | NORTHWOOD | 2005-08-30 | yes | yes |
| 641-324 | Lumen | NORTHWOOD | – | yes | yes |
| 641-325 | UNITED STATES CELLULAR - IA | GRINNELL | – | yes | yes |
| 641-326 | Frontier | MONA | – | yes | yes |
| 641-327 | Windstream | WELLSBURG | 2019-10-21 | yes | yes |
| 641-328 | T-Mobile | MARSHALLTN | 2001-05-23 | yes | yes |
| 641-329 | Frontier | BAILEY | – | yes | yes |
| 641-330 | UNITED STATES CELLULAR - IA | CHARLES CY | – | yes | yes |
| 641-332 | GUTHRIE TELECOMMUNICATIONS NETWORK, INC. - IA | GUTHRIECTR | 2001-10-30 | yes | yes |
| 641-333 | Frontier | LENOX | – | – | yes |
| 641-334 | Onvoy | ROSE HILL | 2019-08-29 | yes | yes |
| 641-335 | Windstream | PRESCOTT | – | yes | yes |
| 641-336 | Windstream | CLEARFIELD | – | yes | yes |
| 641-337 | Windstream | ORIENT | – | yes | yes |
| 641-338 | GRAND RIVER MUTUAL TEL CO | THAYER | – | yes | yes |
| 641-339 | Windstream | SHANNON CY | – | yes | yes |
| 641-340 | IOWA RSA 2 LIMITED PARTNERSHIP DBA CHAT MOBILITY | OSCEOLA | – | – | yes |
| 641-341 | Onvoy | THORNTON | 2021-12-08 | yes | yes |
| 641-342 | Windstream | OSCEOLA | – | – | yes |
| 641-343 | Windstream | GREENFIELD | – | yes | yes |
| 641-344 | UNITED STATES CELLULAR - IA | CRESTON | – | yes | yes |
| 641-345 | COON VALLEY COOP. TEL. ASSN., INC. | NEVINVILLE | – | – | yes |
| 641-346 | Windstream | ARISPE | – | yes | yes |
| 641-347 | Windstream | AFTON | – | yes | yes |
| 641-348 | Windstream | KENT | – | yes | yes |
| 641-349 | Frontier | SHARPSBURG | – | – | yes |
| 641-351 | T-Mobile | MARSHALLTN | 2001-04-23 | yes | yes |
| 641-352 | Windstream | MARSHALLTN | 2002-01-28 | yes | yes |
| 641-353 | MCC TELEPHONY OF IOWA, LLC - IA | KENSETT | 2007-02-14 | yes | yes |
| 641-354 | T-Mobile | MARSHALLTN | 2018-06-20 | yes | yes |
| 641-355 | CLEAR LAKE INDEPENDENT TEL. CO. | CLEAR LAKE | – | yes | yes |
| 641-356 | FRACTEL, LLC | GLADBROOK | 2019-12-27 | yes | yes |
| 641-357 | CLEAR LAKE INDEPENDENT TEL. CO. | CLEAR LAKE | – | – | yes |
| 641-358 | Frontier | MESERVEY | – | – | yes |
| 641-359 | COMMIO, LLC | IOWA FALLS | 2023-09-13 | yes | yes |
| 641-362 | MCC TELEPHONY OF IOWA, LLC - IA | CRESTON | 2019-02-12 | yes | yes |
| 641-363 | Windstream | MINGO | – | yes | yes |
| 641-364 | Windstream | ALTA VISTA | – | yes | yes |
| 641-366 | HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA | CONRAD | – | yes | yes |
| 641-368 | Charter | OTLEY | 2024-05-22 | yes | yes |
| 641-369 | Windstream | BRIDGEWTR | – | yes | yes |
| 641-372 | MCC TELEPHONY OF IOWA, LLC - IA | ROCKWELL | 2007-02-14 | yes | yes |
| 641-373 | UNITED STATES CELLULAR - IA | IOWA FALLS | 2002-07-16 | yes | yes |
| 641-377 | COLO TEL. CO. | COLO | – | yes | yes |
| 641-380 | Lumen | MASON CITY | – | – | yes |
| 641-381 | Verizon | NORTHWOOD | – | yes | yes |
| 641-382 | AT&T | BAILEY | 2021-05-25 | yes | yes |
| 641-384 | T-Mobile | BELMOND | 2018-07-30 | yes | yes |
| 641-385 | Windstream | COLLINS | – | yes | yes |
| 641-387 | Verizon | TOLEDO | 2018-05-02 | yes | yes |
| 641-388 | FARMERS TEL. CO. | LTL CEDAR | 2006-05-01 | – | yes |
| 641-390 | Verizon | NORTHWOOD | – | yes | yes |
| 641-393 | Windstream | ELMA | – | yes | yes |
| 641-394 | Windstream | NEWHAMPTON | – | yes | yes |
| 641-395 | FARMERS MUTUAL TEL. CO. NORA SPRINGS | RUDD | – | – | yes |
| 641-396 | FMTC-I35, INC. D/B/A OMNITEL COMMUNICATIONS | ST CHARLES | – | – | yes |
| 641-397 | Windstream | MARBLEROCK | – | yes | yes |
| 641-398 | FARMERS MUTUAL TEL. CO. NORA SPRINGS | FLOYD | – | – | yes |
| 641-400 | Onvoy | HUMESTON | 2019-11-05 | yes | yes |
| 641-401 | Onvoy | SWALEDALE | 2018-10-25 | yes | yes |
| 641-402 | Charter | MARTINSBG | 2024-05-20 | yes | yes |
| 641-403 | AUREON COMMUNICATIONS, LLC | BAGLEY | 2024-03-04 | yes | yes |
| 641-406 | Onvoy | MESERVEY | 2018-10-25 | yes | yes |
| 641-407 | AUREON COMMUNICATIONS, LLC | LINDEN | 2024-03-04 | yes | yes |
| 641-408 | T-Mobile | CORNING | 2026-06-11 | yes | yes |
| 641-410 | FARMERS TEL. CO. | NEW HAVEN | 2006-10-16 | – | yes |
| 641-413 | Verizon | LENOX | 2004-11-11 | – | yes |
| 641-414 | UNITED STATES CELLULAR - IA | OSCEOLA | – | yes | yes |
| 641-416 | T-Mobile | PELLA | – | yes | yes |
| 641-417 | T-Mobile | NEWTON | – | yes | yes |
| 641-418 | Verizon | CORNING | 2004-11-11 | yes | yes |
| 641-420 | Verizon | MASON CITY | – | – | yes |
| 641-421 | Lumen | MASON CITY | – | – | yes |
| 641-422 | Lumen | MASON CITY | – | – | yes |
| 641-423 | Lumen | MASON CITY | – | – | yes |
| 641-424 | Lumen | MASON CITY | – | – | yes |
| 641-425 | UNITED STATES CELLULAR - IA | MASON CITY | – | yes | yes |
| 641-426 | Verizon | CHARLES CY | – | yes | yes |
| 641-427 | Windstream | BAGLEY | – | yes | yes |
| 641-428 | Lumen | MASON CITY | 2010-08-18 | yes | yes |
| 641-429 | Windstream | JAMAICA | – | yes | yes |
| 641-430 | UNITED STATES CELLULAR - IA | MASON CITY | – | yes | yes |
| 641-431 | UNITED STATES CELLULAR - IA | YALE | – | yes | yes |
| 641-432 | Windstream | FORESTCITY | 2016-07-28 | yes | yes |
| 641-433 | Windstream | WHAT CHEER | 2006-07-13 | yes | yes |
| 641-435 | Lumen | NASHUA | – | yes | yes |
| 641-436 | Verizon | CENTERVL | 2003-07-17 | yes | yes |
| 641-437 | Windstream | CENTERVL | – | yes | yes |
| 641-439 | PANORA COMMUNICATIONS COOPERATIVE | YALE | – | – | yes |
| 641-440 | MCC TELEPHONY OF IOWA, LLC - IA | CLEAR LAKE | 2007-02-14 | yes | yes |
| 641-441 | GREENWAY COMMUNICATIONS L.L.C. - IA | KLEMME | 2019-09-12 | yes | yes |
| 641-442 | GRAND RIVER MUTUAL TEL CO | DAVIS CITY | – | yes | yes |
| 641-443 | GRAND RIVER MUTUAL TEL CO | GARDEN GRV | – | – | yes |
| 641-444 | Frontier | BELMOND | – | yes | yes |
| 641-445 | GRAND RIVER MUTUAL TEL CO | WELDON | – | – | yes |
| 641-446 | GRAND RIVER MUTUAL TEL CO | LEON | – | yes | yes |
| 641-447 | SOUTH CENTRAL COMMUNICATIONS, INC. | MURRAY | – | – | yes |
| 641-448 | Onvoy | MELCHER | 2019-11-05 | yes | yes |
| 641-449 | Windstream | NEWVIRGINI | – | yes | yes |
| 641-450 | NORTHLAND COMMUNICATIONS, INC. - IA | MASON CITY | 2013-05-16 | yes | yes |
| 641-451 | Verizon | FAIRFIELD | 2003-07-14 | yes | yes |
| 641-452 | Windstream | UNIONVILLE | – | yes | yes |
| 641-453 | FARMERS TEL. CO. | NEW HAVEN | 2006-05-01 | – | yes |
| 641-454 | Lumen | MANLY | – | yes | yes |
| 641-455 | T-Mobile | OTTUMWA | 2001-02-09 | yes | yes |
| 641-456 | Lumen | HAMPTON | – | yes | yes |
| 641-457 | MCC TELEPHONY OF IOWA, LLC - IA | LELAND | 2007-02-14 | yes | yes |
| 641-458 | Lumen | GENEVA | – | yes | yes |
| 641-459 | CITIZENS MUTUAL TELEPHONE COOPERATIVE | FLORIS | – | – | yes |
| 641-461 | HD CARRIER LLC | CHARLES CY | 2019-08-29 | yes | yes |
| 641-464 | Windstream | MOUNT AYR | – | yes | yes |
| 641-465 | GREENWAY COMMUNICATIONS L.L.C. - IA | KLEMME | 2010-02-25 | – | yes |
| 641-466 | Windstream | LIBERTYCTR | – | yes | yes |
| 641-469 | Windstream | FAIRFIELD | – | – | yes |
| 641-470 | Windstream | FAIRFIELD | – | – | yes |
| 641-472 | Windstream | FAIRFIELD | – | – | yes |
| 641-473 | Windstream | GLADBROOK | – | yes | yes |
| 641-474 | HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA | GREEN MT | – | yes | yes |
| 641-475 | HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA | HAVERHILL | – | yes | yes |
| 641-476 | HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA | LAUREL | – | yes | yes |
| 641-477 | MINERVA VALLEY TEL. CO., INC. | CLEMONS | – | – | yes |
| 641-478 | HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA | FERGUSON | – | yes | yes |
| 641-479 | Windstream | LE GRAND | – | yes | yes |
| 641-481 | Verizon | TOLEDO | 2003-07-17 | yes | yes |
| 641-482 | PARTNER COMMUNICATIONS COOPERATIVE | MELBOURNE | – | – | yes |
| 641-483 | PARTNER COMMUNICATIONS COOPERATIVE | STATE CTR | – | – | yes |
| 641-484 | Windstream | TOLEDO | – | yes | yes |
| 641-485 | UNITED STATES CELLULAR - IA | MARSHALLTN | – | yes | yes |
| 641-486 | HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA | UNION | – | – | yes |
| 641-487 | MINERVA VALLEY TEL. CO., INC. | ZEARING | – | – | yes |
| 641-488 | HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA | ALBION | – | yes | yes |
| 641-489 | Windstream | CHELSEA | – | yes | yes |
| 641-492 | Windstream | MONTOUR | – | yes | yes |
| 641-493 | PARTNER COMMUNICATIONS COOPERATIVE | RHODES | – | – | yes |
| 641-494 | Lumen | MASON CITY | – | yes | yes |
| 641-495 | Frontier | GOODELL | – | – | yes |
| 641-496 | HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA | LISCOMB | – | – | yes |
| 641-497 | HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA | NEWPROVDNC | – | – | yes |
| 641-498 | PARTNER COMMUNICATIONS COOPERATIVE | GILMAN | – | – | yes |
| 641-499 | Windstream | GARWIN | – | yes | yes |
| 641-500 | Vonage | IOWA FALLS | 2019-12-27 | yes | yes |
| 641-501 | Windstream | MONTEZUMA | 2018-07-06 | yes | yes |
| 641-502 | PARTNER COMMUNICATIONS COOPERATIVE | MELBOURNE | – | – | yes |
| 641-503 | Onvoy | MOUNT AYR | – | yes | yes |
| 641-504 | T-Mobile | OSKALOOSA | – | – | yes |
| 641-505 | Bandwidth | MANLY | 2017-07-20 | yes | yes |
| 641-506 | AT&T | ZEARING | 2021-12-03 | yes | yes |
| 641-507 | PARTNER COMMUNICATIONS COOPERATIVE | BAXTER | – | – | yes |
| 641-508 | Lumen | OSCEOLA | 2022-01-26 | yes | yes |
| 641-509 | FARMERS TEL. CO. | NEW HAVEN | 2006-10-16 | – | yes |
| 641-510 | T-Mobile | GRINNELL | – | – | yes |
| 641-512 | UNITED STATES CELLULAR - IA | MASON CITY | – | yes | yes |
| 641-513 | Onvoy | MASON CITY | 2024-03-12 | yes | yes |
| 641-514 | AT&T | THOMPSON | 2022-02-22 | – | yes |
| 641-516 | Verizon | MARSHALLTN | 2021-01-21 | yes | yes |
| 641-517 | T-Mobile | OSKALOOSA | 2022-01-13 | yes | yes |
| 641-518 | Charter | DELTA | 2024-03-28 | yes | yes |
| 641-519 | MCC TELEPHONY OF IOWA, LLC - IA | GARNER | 2010-03-10 | yes | yes |
| 641-521 | UNITED STATES CELLULAR - IA | NEWTON | – | yes | yes |
| 641-522 | BROOKLYN MUTUAL TEL. CO. | BROOKLYN | – | – | yes |
| 641-523 | MCC TELEPHONY OF IOWA, LLC - IA | CORYDON | 2010-03-08 | yes | yes |
| 641-524 | COON VALLEY COOP. TEL. ASSN., INC. | MENLO | – | – | yes |
| 641-525 | Verizon | CLEAR LAKE | – | yes | yes |
| 641-526 | PARTNER COMMUNICATIONS COOPERATIVE | KELLOGG | – | – | yes |
| 641-527 | LYNNVILLE TELEPHONE COMPANY | LYNNVILLE | – | – | yes |
| 641-528 | Windstream | MALCOM | – | yes | yes |
| 641-529 | Verizon | CLEAR LAKE | – | yes | yes |
| 641-530 | Verizon | MASON CITY | – | yes | yes |
| 641-531 | AT&T | IOWA FALLS | 2017-04-19 | yes | yes |
| 641-533 | GRAND RIVER MUTUAL TEL CO | DERBY | – | – | yes |
| 641-534 | Windstream | LACONA | – | yes | yes |
| 641-535 | Windstream | RUSSELL | – | yes | yes |
| 641-536 | LENOX MUNICIPAL COMMUNICATIONS UTILITY - IA | LENOX | 2008-06-26 | – | yes |
| 641-541 | Verizon | SIGOURNEY | – | yes | yes |
| 641-543 | TON80 COMMUNICATIONS, LLC | ALTA VISTA | 2022-02-28 | yes | yes |
| 641-548 | T-Mobile | MASON CITY | 2018-03-06 | yes | yes |
| 641-551 | FARMERS TEL. CO. | NEW HAVEN | 2006-05-01 | – | yes |
| 641-552 | OMNITEL COMMUNICATIONS, INC. - IA | CHARLES CY | 2007-06-22 | yes | yes |
| 641-557 | Windstream | NEWHAMPTON | 2015-06-25 | yes | yes |
| 641-560 | Onvoy | FAIRFIELD | 2024-03-14 | yes | yes |
| 641-561 | WINNEBAGO COOP. TEL. ASSN. - IA | BUFFALOCTR | – | – | yes |
| 641-562 | WINNEBAGO COOP. TEL. ASSN. - IA | BUFFALOCTR | – | – | yes |
| 641-565 | WINNEBAGO COOP. TEL. ASSN. - IA | CRYSTAL LK | – | – | yes |
| 641-566 | WINNEBAGO COOP. TEL. ASSN. - IA | RAKE | – | – | yes |
| 641-567 | WINNEBAGO COOP. TEL. ASSN. - IA | LELAND | – | – | yes |
| 641-568 | WINNEBAGO COOP. TEL. ASSN. - IA | SCARVILLE | – | – | yes |
| 641-569 | AT&T | OSKALOOSA | 2001-07-11 | yes | yes |
| 641-570 | FARMERS TEL. CO. | LTL CEDAR | 2006-05-01 | – | yes |
| 641-572 | UNITED STATES CELLULAR - IA | LEON | 2009-06-03 | yes | yes |
| 641-575 | Bandwidth | OTTUMWA | 2018-06-21 | yes | yes |
| 641-579 | Frontier | LATIMER | – | – | yes |
| 641-580 | Verizon | LATIMER | – | yes | yes |
| 641-581 | WINNEBAGO COOP. TEL. ASSN. - IA | FORESTCITY | – | – | yes |
| 641-582 | Windstream | FORESTCITY | – | yes | yes |
| 641-583 | AT&T | MANLY | 2001-07-11 | yes | yes |
| 641-584 | WINNEBAGO COOP. TEL. ASSN. - IA | THOMPSON | – | – | yes |
| 641-585 | WINNEBAGO COOPERATIVE TELEPHONE ASSOCIATION - IA | FORESTCITY | – | – | yes |
| 641-586 | Frontier | SOUTHADAMS | – | yes | yes |
| 641-587 | COMMUNICATIONS 1 NETWORKS, INC. | KLEMME | – | – | yes |
| 641-588 | WINNEBAGO COOP. TEL. ASSN. - IA | JOICE | – | – | yes |
| 641-589 | Charter | SEYMOUR | 2024-03-28 | yes | yes |
| 641-590 | Verizon | JOICE | – | yes | yes |
| 641-591 | WINNEBAGO COOP. TEL. ASSN. - IA | LAKE MILLS | – | – | yes |
| 641-592 | WINNEBAGO COOP. TEL. ASSN. - IA | LAKE MILLS | – | – | yes |
| 641-593 | SEARSBORO TEL. CO., INC. | SEARSBORO | – | – | yes |
| 641-594 | SULLY TEL. ASSN. | SULLY | – | – | yes |
| 641-595 | Windstream | DEEP RIVER | – | – | yes |
| 641-596 | Verizon | JOICE | – | yes | yes |
| 641-599 | Windstream | ST ANSGAR | 2015-06-25 | yes | yes |
| 641-600 | FRACTEL, LLC | LIBERTYVL | 2019-12-27 | yes | yes |
| 641-601 | Charter | TRACY | 2024-03-28 | yes | yes |
| 641-608 | FARMERS TEL. CO. | LTL CEDAR | 2006-05-01 | – | yes |
| 641-609 | Onvoy | ALEXANDER | 2018-11-07 | yes | yes |
| 641-612 | FARMERS TEL. CO. | NEW HAVEN | 2006-05-01 | – | yes |
| 641-613 | LOCAL TELEPHONE DATA SERVICES CORP. | PELLA | – | yes | yes |
| 641-614 | Onvoy | SHARPSBURG | 2018-10-25 | yes | yes |
| 641-619 | IMON COMMUNICATIONS, LLC - IA | PELLA | 2020-09-23 | yes | yes |
| 641-620 | Windstream | PELLA | – | – | yes |
| 641-621 | Windstream | PELLA | – | – | yes |
| 641-622 | Windstream | SIGOURNEY | – | yes | yes |
| 641-623 | Windstream | MONTEZUMA | – | – | yes |
| 641-624 | Windstream | DELTA | – | yes | yes |
| 641-625 | Windstream | PEORIA | – | yes | yes |
| 641-626 | Windstream | LEIGHTON | – | yes | yes |
| 641-627 | Windstream | OTLEY | – | yes | yes |
| 641-628 | Windstream | PELLA | – | – | yes |
| 641-629 | Verizon | PELLA | – | yes | yes |
| 641-630 | T-Mobile | HAMPTON | 2018-06-20 | yes | yes |
| 641-631 | OMNITEL COMMUNICATIONS, INC. - IA | CHARLES CY | 2017-12-06 | yes | yes |
| 641-632 | Lumen | ROSE HILL | – | yes | yes |
| 641-634 | Windstream | WHAT CHEER | – | yes | yes |
| 641-635 | Windstream | HARPER | – | yes | yes |
| 641-636 | Windstream | KEOTA | – | yes | yes |
| 641-637 | Windstream | NEW SHARON | – | yes | yes |
| 641-638 | Verizon | OSKALOOSA | – | yes | yes |
| 641-639 | Charter | MYSTIC | 2024-03-28 | yes | yes |
| 641-640 | Verizon | IOWA FALLS | – | yes | yes |
| 641-642 | FARMERS MUTUAL COOP. TEL. CO. | MOULTON | – | – | yes |
| 641-643 | Charter | MALCOM | 2021-04-13 | yes | yes |
| 641-644 | BARNES CITY COOP. TEL. CO. | BARNESCITY | – | – | yes |
| 641-646 | Onvoy | ROWAN | 2018-10-25 | yes | yes |
| 641-647 | Windstream | MYSTIC | – | yes | yes |
| 641-648 | Lumen | IOWA FALLS | – | – | yes |
| 641-649 | Windstream | PLANO | – | yes | yes |
| 641-651 | Verizon | PELLA | – | yes | yes |
| 641-652 | Windstream | ELDON | – | yes | yes |
| 641-653 | Windstream | HEDRICK | – | yes | yes |
| 641-654 | AUREON COMMUNICATIONS, LLC | TOLEDO | 2024-05-10 | yes | yes |
| 641-655 | Windstream | FARSON | – | yes | yes |
| 641-656 | Windstream | MILTON | – | yes | yes |
| 641-657 | T-Mobile | HAMPTON | 2024-07-18 | yes | yes |
| 641-658 | Windstream | CINCINNATI | – | yes | yes |
| 641-659 | Windstream | GRINNELL | 2015-06-25 | yes | yes |
| 641-660 | UNITED STATES CELLULAR - IA | OSKALOOSA | – | yes | yes |
| 641-661 | Windstream | MARTINSBG | – | yes | yes |
| 641-662 | FARMERS TEL. CO. | BATAVIA | – | – | yes |
| 641-664 | CITIZENS MUTUAL TELEPHONE COOPERATIVE | BLOOMFIELD | – | – | yes |
| 641-665 | FARMERS TEL. CO. | NEW HAVEN | 2006-10-16 | – | yes |
| 641-666 | Onvoy | OSAGE | 2017-12-06 | yes | yes |
| 641-667 | Windstream | OLLIE | – | yes | yes |
| 641-668 | TON80 COMMUNICATIONS, LLC | BUSSEY | 2022-03-14 | yes | yes |
| 641-670 | Verizon | OSKALOOSA | – | yes | yes |
| 641-671 | Onvoy | LENOX | 2018-10-25 | yes | yes |
| 641-672 | Lumen | OSKALOOSA | – | yes | yes |
| 641-673 | Lumen | OSKALOOSA | – | – | yes |
| 641-674 | T-Mobile | CENTERVL | 2024-07-31 | yes | yes |
| 641-675 | CITIZENS MUTUAL TELEPHONE COOPERATIVE | PULASKI | – | – | yes |
| 641-676 | MAHASKA COMMUNICATION GROUP, LLC - IA | OSKALOOSA | 2003-05-01 | yes | yes |
| 641-677 | FRACTEL, LLC | SHEFFIELD | 2019-12-27 | yes | yes |
| 641-678 | SEARSBORO TEL. CO., INC. | SEARSBORO | – | – | yes |
| 641-680 | Verizon | OTTUMWA | – | – | yes |
| 641-681 | Onvoy | GOODELL | 2018-10-25 | yes | yes |
| 641-682 | Lumen | OTTUMWA | – | – | yes |
| 641-683 | Lumen | OTTUMWA | – | – | yes |
| 641-684 | Lumen | OTTUMWA | – | – | yes |
| 641-688 | FRACTEL, LLC | TINGLEY | 2020-07-21 | yes | yes |
| 641-690 | Charter | MACKSBURG | 2024-05-20 | yes | yes |
| 641-691 | AT&T | MARSHALLTN | 2001-07-11 | yes | yes |
| 641-692 | Frontier | ALEXANDER | – | – | yes |
| 641-693 | Windstream | LIBERTYVL | – | yes | yes |
| 641-696 | FARMERS TEL. CO. | PLYMOUTH | – | – | yes |
| 641-705 | MCC TELEPHONY OF IOWA, LLC - IA | ELMA | – | yes | yes |
| 641-706 | UNITED STATES CELLULAR - IA | NEWHAMPTON | 2025-03-21 | yes | yes |
| 641-710 | OMNITEL COMMUNICATIONS, INC. - IA | STACYVILLE | – | yes | yes |
| 641-713 | OMNITEL COMMUNICATIONS, INC. - IA | ST ANSGAR | – | yes | yes |
| 641-714 | Charter | LE GRAND | 2024-02-09 | yes | yes |
| 641-715 | Onvoy | CHARLES CY | 2005-05-13 | yes | yes |
| 641-717 | Onvoy | COULTER | – | yes | yes |
| 641-718 | UNITED STATES CELLULAR - IA | NEWHAMPTON | 2025-03-21 | yes | yes |
| 641-719 | AT&T | CLEMONS | 2021-07-19 | – | yes |
| 641-722 | CITIZENS MUTUAL TELEPHONE COOPERATIVE | DRAKESVL | – | – | yes |
| 641-724 | Windstream | MORAVIA | – | yes | yes |
| 641-726 | Windstream | MELROSE | – | yes | yes |
| 641-727 | TON80 COMMUNICATIONS, LLC | BLAKESBURG | 2022-03-04 | yes | yes |
| 641-728 | Windstream | PERU | – | yes | yes |
| 641-729 | UNITED STATES CELLULAR - IA | NEWHAMPTON | 2025-03-21 | yes | yes |
| 641-732 | Lumen | OSAGE | – | yes | yes |
| 641-734 | Windstream | DIAGONAL | – | yes | yes |
| 641-735 | MCC TELEPHONY OF IOWA, LLC - IA | BUFFALOCTR | 2007-02-14 | yes | yes |
| 641-736 | Windstream | ST ANSGAR | – | yes | yes |
| 641-737 | Windstream | STACYVILLE | – | yes | yes |
| 641-739 | FARMERS TEL. CO. | NEW HAVEN | 2006-10-16 | – | yes |
| 641-740 | Verizon | CASEY | – | yes | yes |
| 641-741 | KILLDUFF TELEPHONE COMPANY | KILLDUFF | – | – | yes |
| 641-742 | Windstream | ADAIR | – | yes | yes |
| 641-743 | Windstream | GREENFIELD | – | yes | yes |
| 641-744 | Windstream | LINDEN | – | yes | yes |
| 641-745 | Windstream | FONTANELLE | – | yes | yes |
| 641-746 | CASEY MUTUAL TEL. CO. | CASEY | – | – | yes |
| 641-747 | Windstream | GUTHRIECTR | – | yes | yes |
| 641-748 | WINNEBAGO COOP. TEL. ASSN. - IA | GRAFTON | – | – | yes |
| 641-749 | FARMERS MUTUAL TEL. CO. NORA SPRINGS | NORA SPG | – | – | yes |
| 641-750 | Verizon | MARSHALLTN | – | – | yes |
| 641-751 | UNITED STATES CELLULAR - IA | MARSHALLTN | – | yes | yes |
| 641-752 | Lumen | MARSHALLTN | 2001-04-24 | – | yes |
| 641-753 | Lumen | MARSHALLTN | 2001-04-24 | – | yes |
| 641-754 | Lumen | MARSHALLTN | 2001-04-24 | – | yes |
| 641-755 | PANORA COMMUNICATIONS COOPERATIVE | PANORA | – | – | yes |
| 641-756 | FARMERS MUTUAL TEL. CO. NORA SPRINGS | ROCKFORD | – | – | yes |
| 641-757 | Verizon | PANORA | – | yes | yes |
| 641-758 | HEART OF IOWA VENTURES, L.L.C. - IA | MARSHALLTN | 2009-02-05 | yes | yes |
| 641-760 | Charter | MINGO | 2024-05-20 | yes | yes |
| 641-762 | COMMUNICATIONS 1 NETWORKS, INC. | KANAWHA | – | – | yes |
| 641-763 | SOUTH CENTRAL COMMUNICATIONS, INC. | LORIMOR | – | – | yes |
| 641-764 | Windstream | MARTENSDL | – | yes | yes |
| 641-765 | FMTC-I35, INC. D/B/A OMNITEL COMMUNICATIONS | TRURO | – | – | yes |
| 641-766 | Windstream | LUCAS | – | yes | yes |
| 641-767 | Windstream | REDDING | – | yes | yes |
| 641-768 | Windstream | MACKSBURG | – | yes | yes |
| 641-770 | UNITED STATES CELLULAR - IA | NEWHAMPTON | 2025-03-21 | yes | yes |
| 641-772 | Windstream | TINGLEY | – | yes | yes |
| 641-773 | GRAND RIVER MUTUAL TEL CO | GRANDRIVER | – | yes | yes |
| 641-774 | Windstream | CHARITON | – | – | yes |
| 641-775 | ROCKWELL COOP. TEL. ASSN. | BRISTOW | – | – | yes |
| 641-776 | TON80 COMMUNICATIONS, LLC | CHARITON | 2022-03-25 | yes | yes |
| 641-777 | UNITED STATES CELLULAR - IA | OTTUMWA | – | yes | yes |
| 641-780 | UNITED STATES CELLULAR - IA | PELLA | – | yes | yes |
| 641-781 | T-Mobile | NEWTON | – | yes | yes |
| 641-782 | Windstream | CRESTON | – | – | yes |
| 641-783 | Windstream | KELLERTON | – | yes | yes |
| 641-784 | GRAND RIVER MUTUAL TEL CO | LAMONI | – | yes | yes |
| 641-785 | Windstream | BENTON | – | yes | yes |
| 641-787 | Windstream | NEWTON | – | yes | yes |
| 641-788 | GRAND RIVER MUTUAL TEL CO | BLOCKTON | – | yes | yes |
| 641-790 | Verizon | SIGOURNEY | – | yes | yes |
| 641-791 | Windstream | NEWTON | – | – | yes |
| 641-792 | Windstream | NEWTON | – | – | yes |
| 641-793 | REASNOR TELEPHONE COMPANY, LLC | REASNOR | – | – | yes |
| 641-794 | ROCKWELL COOP. TEL. ASSN. | DOUGHERTY | – | – | yes |
| 641-795 | FARMERS TEL. CO. | LTL CEDAR | 2006-05-01 | – | yes |
| 641-796 | REASNOR TELEPHONE COMPANY, LLC | REASNOR | 2021-04-27 | yes | yes |
| 641-797 | WINNEBAGO COOP. TEL. ASSN. - IA | FERTILE | – | – | yes |
| 641-798 | KILLDUFF TELEPHONE COMPANY | KILLDUFF | – | – | yes |
| 641-799 | UNITED STATES CELLULAR - IA | OTTUMWA | – | yes | yes |
| 641-800 | Onvoy | ACKLEY | 2018-02-16 | yes | yes |
| 641-801 | UNITED STATES CELLULAR - IA | NEWHAMPTON | 2025-03-21 | yes | yes |
| 641-802 | IP HORIZON LLC | HAMPTON | 2025-08-27 | yes | yes |
| 641-808 | T-Mobile | COLO | 2018-03-06 | yes | yes |
| 641-810 | IP HORIZON LLC | OSKALOOSA | 2025-08-27 | yes | yes |
| 641-812 | MCC TELEPHONY OF IOWA, LLC - IA | HAMPTON | 2010-03-10 | yes | yes |
| 641-814 | LOCAL TELEPHONE DATA SERVICES CORP. | OTTUMWA | – | yes | yes |
| 641-816 | OMNITEL COMMUNICATIONS, INC. - IA | GREENE | – | yes | yes |
| 641-818 | UNITED STATES CELLULAR - IA | NEWHAMPTON | 2025-03-21 | yes | yes |
| 641-819 | Windstream | FAIRFIELD | 2015-06-25 | yes | yes |
| 641-820 | Verizon | KNOXVILLE | – | yes | yes |
| 641-821 | T-Mobile | GRINNELL | – | yes | yes |
| 641-822 | ROCKWELL COOP. TEL. ASSN. | ROCKWELL | – | – | yes |
| 641-823 | Windstream | GREENE | – | yes | yes |
| 641-825 | IP HORIZON LLC | IOWA FALLS | 2025-08-27 | yes | yes |
| 641-826 | FARMERS TEL. CO. | LTL CEDAR | 2005-12-01 | – | yes |
| 641-827 | FARMERS TEL. CO. | NEW HAVEN | 2005-12-01 | – | yes |
| 641-828 | Windstream | KNOXVILLE | – | – | yes |
| 641-829 | VENTURA TEL. CO., INC. | VENTURA | – | – | yes |
| 641-831 | T-Mobile | NEWTON | – | yes | yes |
| 641-832 | OSAGE MUNICIPAL COMMUNICATIONS UTILITY - IA | OSAGE | 2002-05-07 | yes | yes |
| 641-834 | MCC TELEPHONY OF IOWA, LLC - IA | LYNNVILLE | 2007-02-14 | yes | yes |
| 641-837 | TON80 COMMUNICATIONS, LLC | ALBIA | 2022-02-24 | yes | yes |
| 641-840 | Verizon | NEWTON | – | yes | yes |
| 641-841 | Windstream | NEWTON | – | yes | yes |
| 641-842 | Windstream | KNOXVILLE | – | yes | yes |
| 641-843 | Lumen | BRITT | – | yes | yes |
| 641-844 | Lumen | MARSHALLTN | – | yes | yes |
| 641-845 | WINNEBAGO COOP. TEL. ASSN. - IA | KENSETT | – | – | yes |
| 641-846 | MCC TELEPHONY OF IOWA, LLC - IA | VENTURA | 2007-02-14 | yes | yes |
| 641-847 | Lumen | ACKLEY | – | yes | yes |
| 641-849 | Verizon | ELDORA | 2003-07-17 | yes | yes |
| 641-853 | Frontier | ROWAN | – | – | yes |
| 641-854 | Lumen | MARSHALLTN | 2015-03-09 | yes | yes |
| 641-856 | Windstream | CENTERVL | – | yes | yes |
| 641-857 | DUMONT TEL. CO. | DUMONT | – | – | yes |
| 641-858 | HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA | ELDORA | – | yes | yes |
| 641-860 | Verizon | BRITT | – | yes | yes |
| 641-861 | T-Mobile | PELLA | – | – | yes |
| 641-862 | Windstream | WILLIAMSON | – | yes | yes |
| 641-863 | Verizon | BRITT | – | yes | yes |
| 641-864 | HUBBARD COOP. TEL. ASSN. | HUBBARD | – | – | yes |
| 641-865 | FARMERS TEL. CO. | NEW HAVEN | 2006-10-16 | – | yes |
| 641-866 | Frontier | COULTER | – | – | yes |
| 641-868 | HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA | STEAMBOTRK | – | yes | yes |
| 641-869 | Windstream | WELLSBURG | – | yes | yes |
| 641-870 | IOWA RSA 2 LIMITED PARTNERSHIP DBA CHAT MOBILITY | CORYDON | – | yes | yes |
| 641-871 | Verizon | KNOXVILLE | – | yes | yes |
| 641-872 | SOUTH CENTRAL COMMUNICATIONS, INC. | CORYDON | – | – | yes |
| 641-873 | GRAND RIVER MUTUAL TEL CO | ALLERTON | – | – | yes |
| 641-874 | Windstream | PROMISE CY | – | yes | yes |
| 641-876 | GRAND RIVER MUTUAL TEL CO | LINEVILLE | – | – | yes |
| 641-877 | Windstream | HUMESTON | – | yes | yes |
| 641-880 | UNITED STATES CELLULAR - IA | NEWHAMPTON | 2025-03-21 | yes | yes |
| 641-881 | Verizon | LATIMER | – | yes | yes |
| 641-887 | MCC TELEPHONY OF IOWA, LLC - IA | SULLY | 2007-02-14 | yes | yes |
| 641-888 | Verizon | GRINNELL | – | yes | yes |
| 641-891 | UNITED STATES CELLULAR - IA | KNOXVILLE | – | yes | yes |
| 641-892 | Frontier | SHEFFIELD | – | yes | yes |
| 641-894 | ROCKWELL COOP. TEL. ASSN. | AREDALE | – | – | yes |
| 641-895 | UNITED STATES CELLULAR - IA | CENTERVL | – | yes | yes |
| 641-896 | WINNEBAGO COOP. TEL. ASSN. - IA | HANLONTOWN | – | – | yes |
| 641-897 | GRAND RIVER MUTUAL TEL CO | MILLERTON | – | – | yes |
| 641-898 | Windstream | SEYMOUR | – | yes | yes |
| 641-900 | FRACTEL, LLC | MONA | 2019-12-30 | yes | yes |
| 641-901 | UNITED STATES CELLULAR - IA | NEWHAMPTON | 2025-03-21 | yes | yes |
| 641-902 | UNITED STATES CELLULAR - IA | NEWHAMPTON | 2025-03-21 | yes | yes |
| 641-903 | T-Mobile | MASON CITY | 2005-06-17 | yes | yes |
| 641-905 | Lumen | MELBOURNE | 2025-05-27 | yes | yes |
| 641-909 | T-Mobile | LAKE MILLS | 2006-03-24 | yes | yes |
| 641-916 | AT&T | ST CHARLES | 2021-12-03 | yes | yes |
| 641-919 | UNITED STATES CELLULAR - IA | FAIRFIELD | – | yes | yes |
| 641-920 | HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA | STEAMBOTRK | – | – | yes |
| 641-921 | MCC TELEPHONY OF IOWA, LLC - IA | GREEN MT | 2010-03-08 | yes | yes |
| 641-922 | HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA | CONRAD | – | – | yes |
| 641-923 | Lumen | GARNER | – | yes | yes |
| 641-924 | Lumen | GARNER | 2010-03-10 | yes | yes |
| 641-925 | COMMUNICATIONS 1 NETWORK, INC. - IA | GARNER | 2012-02-23 | yes | yes |
| 641-926 | WINNEBAGO COOP. TEL. ASSN. - IA | WODEN | – | – | yes |
| 641-927 | WINNEBAGO COOP. TEL. ASSN. - IA | MILLER | – | – | yes |
| 641-929 | CITIZENS MUTUAL TELEPHONE COOPERATIVE | MARK | – | – | yes |
| 641-931 | Verizon | ALBIA | 2003-07-17 | yes | yes |
| 641-932 | Windstream | ALBIA | – | yes | yes |
| 641-933 | Windstream | FREMONT | – | yes | yes |
| 641-934 | Windstream | BLADENSBG | – | yes | yes |
| 641-935 | Windstream | CHILLICOTH | – | yes | yes |
| 641-936 | Windstream | DOUDS | – | yes | yes |
| 641-937 | Windstream | AGENCY | – | yes | yes |
| 641-938 | Windstream | BLAKESBURG | – | yes | yes |
| 641-939 | HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA | ELDORA | – | – | yes |
| 641-942 | Windstream | MILO | – | yes | yes |
| 641-943 | Windstream | ATTICA | – | yes | yes |
| 641-944 | Windstream | BUSSEY | – | yes | yes |
| 641-946 | Windstream | LOVILIA | – | yes | yes |
| 641-947 | Windstream | MELCHER | – | yes | yes |
| 641-948 | BLUE EARTH VALLEY TEL. CO. | STEVENS | – | – | yes |
| 641-949 | Windstream | TRACY | – | yes | yes |
| 641-954 | Verizon | OTTUMWA | – | yes | yes |
| 641-955 | FRACTEL, LLC | MONROE | 2020-07-21 | yes | yes |
| 641-962 | FARMERS TEL. CO. | NEW HAVEN | 2006-10-16 | – | yes |
| 641-966 | TON80 COMMUNICATIONS, LLC | BLADENSBG | 2022-02-28 | yes | yes |
| 641-969 | Windstream | EDDYVILLE | – | yes | yes |
| 641-977 | FRACTEL, LLC | NEW SHARON | 2020-07-21 | yes | yes |
| 641-980 | Verizon | OTTUMWA | – | yes | yes |
| 641-982 | FARMERS TEL. CO. | NEW HAVEN | – | – | yes |
| 641-983 | FARMERS TEL. CO. | LTL CEDAR | – | – | yes |
| 641-985 | FARMERS TEL. CO. | RICEVILLE | – | – | yes |
| 641-990 | UNITED STATES CELLULAR - IA | GRINNELL | – | yes | yes |
| 641-991 | T-Mobile | OSCEOLA | 2025-03-20 | yes | yes |
| 641-992 | FARMERS TEL. CO. | LTL CEDAR | 2006-05-01 | – | yes |
| 641-995 | Frontier | SWALEDALE | – | – | yes |
| 641-997 | UNITED STATES CELLULAR - IA | OTTUMWA | 2024-11-11 | yes | yes |
| 641-998 | Frontier | THORNTON | – | – | yes |
| 641-999 | Onvoy | NASHUA | 2018-02-16 | yes | yes |
Frequently asked
How many prefixes does area code 641 have?
584 NXX blocks are assigned of 786 possible. Each block is 10,000 consecutive numbers, so the code currently covers about 5,840 thousand-number ranges across 223 rate centers.
What do the first three digits after 641 tell me?
They identify the block, which tells you the rate center it was allocated to and the carrier that received it. They do not tell you who serves the number today: portability moves numbers between carriers, and pooling splits a block between several of them.
Is a 641 prefix tied to a specific town?
To a rate center, which is billing geography rather than a town. NANPA abbreviates rate center names to ten characters and in large metros uses zone codes, so the name is a NANPA label, not a place name.
What does “pooled” mean in the 641 table?
That the block is in thousands-block pooling: carriers draw 1,000-number lots from it instead of taking all 10,000. 418 of 641's blocks are pooled, which is how regulators slowed down area code exhaustion – and why one prefix can belong to several carriers.
Source and limits
NANPA CO Code Assignment Records, all states, utilized codes, file updated 11/01/2026 – the rows where the record's Use field is “AS” (assigned). Unavailable codes are excluded. The records say who received a block and when, not who serves a particular number today.
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