Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
Area code 320 prefixes
511 of the 786 possible NXX blocks are assigned in area code 320 (65.0% of capacity), spread across 145 rate centers and 79 holders. The largest holders are ONVOY, LLC - MN (58 blocks, 11.4%), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN (57 blocks, 11.2%), QWEST CORPORATION (42 blocks, 8.2%). Grouped by brand, Lumen accounts for 97 blocks; brand-attributable holders cover 69% 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 2001-02-05 to 2026-09-14, with 31 blocks handed out in 2003 alone. 369 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. 1 assigned block (880) is not yet in service: assigned to a carrier but not open for calls, so a caller ID from one is spoofed. 49 were growth assignments – additional blocks to a carrier that had already filled its earlier ones.
511 assigned blocks of 786
145 rate centers
79 holders of record
72% in thousands-block pooling
Largest holders in 320
| Holder of record, as NANPA names it | Brand | Blocks | Share |
|---|---|---|---|
| ONVOY, LLC - MN | Onvoy | 58 | 11.4% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | Verizon | 57 | 11.2% |
| QWEST CORPORATION | Lumen | 42 | 8.2% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 28 | 5.5% |
| CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN | Frontier | 27 | 5.3% |
| CENTURYLINK OF MINNESOTA, INC. | Lumen | 24 | 4.7% |
| LEVEL 3 COMMUNICATIONS, LLC - MN | Lumen | 23 | 4.5% |
| AERIAL COMMUNICATIONS, INC. | T-Mobile | 22 | 4.3% |
| FRACTEL, LLC | – | 17 | 3.3% |
| MCC TELEPHONY OF MINNESOTA, LLC - MN | – | 15 | 2.9% |
| CHARTER IP ENABLED SERVICES, LLC | Charter | 11 | 2.2% |
| TON80 COMMUNICATIONS, LLC | – | 11 | 2.2% |
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.
ST CLOUD 86WILLMAR 18ALEXANDRIA 18LITTLE FLS 13HUTCHINSON 11PINE CITY 10LITCHFIELD 9BRAHAM 8MORRIS 8MORA 8OGILVIE 8RUSH CITY 8GLENCOE 8HINCKLEY 7MONTEVIDEO 7GRANITEFLS 7SANDSTONE 6ORTONVILLE 6SAUKCENTRE 6GLENWOOD 5BENSON 5OLIVIA 5ST JOSEPH 4DASSEL 4APPLETON 4ROYALTON 4DAWSON 4CLEAR LAKE 4HECTOR 4COLDSPRING 4AVON 4LONGPRAIRI 4MILACA 4FOLEY 4VILLARD 3RICHMOND 3HOLDINGFD 3GROVE CITY 3ANNANDALE 3HOLMESCITY 3COKATO 3FORESTON 3BROWNTON 3ATWATER 3BIRDISLAND 3COSMOS 3PIERZ 3HOWARDLAKE 3SWANVILLE 3MADISON 3
All 511 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 |
|---|---|---|---|---|---|
| 320-200 | Allstream | ST CLOUD | 2009-10-12 | yes | yes |
| 320-201 | AT&T | VILLARD | 2004-03-08 | yes | yes |
| 320-202 | Lumen | ST CLOUD | – | – | yes |
| 320-203 | Lumen | ST CLOUD | – | – | yes |
| 320-204 | TEKSTAR COMMUNICATIONS, INC. | ST CLOUD | 2014-03-19 | yes | yes |
| 320-205 | Onvoy | BRAHAM | – | – | yes |
| 320-206 | MIDCONTINENT COMMUNICATIONS - MN | RICHMOND | 2011-10-05 | yes | yes |
| 320-207 | Onvoy | HINCKLEY | – | yes | yes |
| 320-208 | Onvoy | MORRIS | 2003-08-27 | yes | yes |
| 320-209 | Lumen | MORA | – | yes | yes |
| 320-210 | Onvoy | OGILVIE | – | – | yes |
| 320-212 | Verizon | WILLMAR | – | – | yes |
| 320-213 | Onvoy | PINE CITY | – | – | yes |
| 320-214 | Lumen | WILLMAR | – | – | yes |
| 320-215 | Onvoy | RUSH CITY | – | – | yes |
| 320-216 | Onvoy | SANDSTONE | – | yes | yes |
| 320-217 | T-Mobile | ST CLOUD | – | yes | yes |
| 320-219 | AT&T | ALEXANDRIA | – | yes | yes |
| 320-220 | AT&T | WILLMAR | – | yes | yes |
| 320-221 | Verizon | LITCHFIELD | – | yes | yes |
| 320-222 | Windstream | WILLMAR | – | – | yes |
| 320-223 | Onvoy | ST CLOUD | 2003-05-01 | yes | yes |
| 320-224 | T-Mobile | ST CLOUD | – | – | yes |
| 320-225 | Windstream | MORA | – | – | yes |
| 320-226 | Verizon | MONTEVIDEO | – | – | yes |
| 320-227 | Lumen | ST CLOUD | 2002-09-24 | yes | yes |
| 320-228 | MIDCONTINENT COMMUNICATIONS - MN | HOLDINGFD | 2011-09-23 | yes | yes |
| 320-229 | Lumen | ST CLOUD | – | – | yes |
| 320-230 | Allstream | ST CLOUD | – | – | yes |
| 320-231 | Lumen | WILLMAR | – | – | yes |
| 320-232 | T-Mobile | LITTLE FLS | 2003-05-01 | yes | yes |
| 320-233 | Frontier | FINLAYSON | – | yes | yes |
| 320-234 | HUTCHINSON TEL. CO. | HUTCHINSON | – | – | yes |
| 320-235 | Lumen | WILLMAR | – | – | yes |
| 320-236 | Windstream | SOUTHHAVEN | – | – | yes |
| 320-237 | AT&T | ST CLOUD | – | yes | yes |
| 320-238 | Lumen | PLATO | – | yes | yes |
| 320-239 | STARBUCK TEL. CO. | STARBUCK | – | – | yes |
| 320-240 | Lumen | ST CLOUD | – | – | yes |
| 320-241 | Verizon | ST CLOUD | – | – | yes |
| 320-242 | Brightspeed | CLOVERTON | – | yes | yes |
| 320-243 | Windstream | PAYNESVL | – | – | yes |
| 320-244 | Lumen | GROVE CITY | 2002-07-29 | yes | yes |
| 320-245 | Lumen | SANDSTONE | – | yes | yes |
| 320-246 | RUNESTONE TELEPHONE ASSOCIATION | DONNELLY | – | yes | yes |
| 320-247 | Verizon | ST CLOUD | – | yes | yes |
| 320-248 | Verizon | ST CLOUD | – | – | yes |
| 320-249 | Verizon | ST CLOUD | – | – | yes |
| 320-250 | Verizon | ST CLOUD | – | – | yes |
| 320-251 | Lumen | ST CLOUD | – | – | yes |
| 320-252 | Lumen | ST CLOUD | – | – | yes |
| 320-253 | Lumen | ST CLOUD | – | – | yes |
| 320-254 | Frontier | BELGRADE | – | – | yes |
| 320-255 | Lumen | ST CLOUD | – | – | yes |
| 320-256 | MELROSE TEL. CO. | MELROSE | – | – | yes |
| 320-257 | Allstream | ST CLOUD | – | – | yes |
| 320-258 | Bandwidth | ST CLOUD | – | – | yes |
| 320-259 | Lumen | ST CLOUD | – | – | yes |
| 320-260 | AT&T | ST CLOUD | – | – | yes |
| 320-261 | MIDCONTINENT COMMUNICATIONS - MN | ANNANDALE | 2016-01-25 | yes | yes |
| 320-262 | T-Mobile | WILLMAR | 2002-10-10 | yes | yes |
| 320-263 | Verizon | WILLMAR | 2003-01-21 | yes | yes |
| 320-264 | MID STATE TEL. CO. DBA KMP TEL. CO. | KERKHOVEN | – | yes | yes |
| 320-265 | Lumen | BEARDSLEY | – | yes | yes |
| 320-266 | AT&T | ST CLOUD | – | yes | yes |
| 320-267 | AT&T | ST CLOUD | – | – | yes |
| 320-268 | MID STATE TEL. CO. | SEDAN | – | yes | yes |
| 320-269 | Lumen | MONTEVIDEO | – | yes | yes |
| 320-270 | Lumen | HOLMESCITY | 2002-07-29 | yes | yes |
| 320-271 | Allstream | ST JOSEPH | – | yes | yes |
| 320-272 | Lumen | OGILVIE | – | yes | yes |
| 320-273 | FEDERATED TEL. COOP. | ODESSA | – | – | yes |
| 320-274 | Windstream | ANNANDALE | – | – | yes |
| 320-275 | Lumen | DASSEL | – | – | yes |
| 320-276 | MID STATE TEL. CO. | IRVING | – | – | yes |
| 320-277 | Consolidated | SULLIVANLK | – | – | yes |
| 320-278 | MID STATE TEL. CO. | TERRACE | – | yes | yes |
| 320-279 | AT&T | HINCKLEY | – | yes | yes |
| 320-280 | T-Mobile | HINCKLEY | 2002-02-12 | yes | yes |
| 320-281 | Lumen | ST CLOUD | 2001-06-12 | yes | yes |
| 320-282 | T-Mobile | ST CLOUD | 2001-06-26 | – | yes |
| 320-283 | LOWRY TELEPHONE COMPANY, LLC | LOWRY | – | – | yes |
| 320-284 | RUNESTONE TELEPHONE ASSOCIATION | NORCROSS | – | yes | yes |
| 320-285 | MELROSE TEL. CO. | GREY EAGLE | – | – | yes |
| 320-286 | Lumen | COKATO | – | yes | yes |
| 320-287 | Verizon | MORRIS | 2002-02-13 | yes | yes |
| 320-288 | AT&T | MORRIS | 2001-02-05 | yes | yes |
| 320-289 | Lumen | APPLETON | – | yes | yes |
| 320-290 | Verizon | ST CLOUD | – | – | yes |
| 320-291 | T-Mobile | ST CLOUD | – | yes | yes |
| 320-292 | Verizon | ST CLOUD | – | yes | yes |
| 320-293 | Verizon | ST CLOUD | – | – | yes |
| 320-294 | BENTON COOP. TEL. CO. | FORESTON | – | yes | yes |
| 320-295 | T-Mobile | WILLMAR | 2001-02-26 | yes | yes |
| 320-296 | T-Mobile | HUTCHINSON | 2001-03-02 | yes | yes |
| 320-297 | Verizon | APPLETON | 2002-02-13 | yes | yes |
| 320-298 | T-Mobile | ALEXANDRIA | 2001-08-21 | yes | yes |
| 320-299 | Lumen | COKATO | 2002-11-13 | yes | yes |
| 320-300 | Lumen | GLENCOE | 2004-07-15 | yes | yes |
| 320-301 | Onvoy | MONTEVIDEO | 2011-11-14 | yes | yes |
| 320-302 | Onvoy | ROYALTON | – | yes | yes |
| 320-303 | Verizon | GLENWOOD | 2003-01-13 | yes | yes |
| 320-304 | Verizon | ALEXANDRIA | 2002-03-18 | yes | yes |
| 320-305 | Verizon | ORTONVILLE | 2002-02-13 | yes | yes |
| 320-306 | Onvoy | OGILVIE | – | yes | yes |
| 320-307 | Onvoy | BRAHAM | 2011-11-23 | yes | yes |
| 320-308 | Onvoy | ST CLOUD | 2003-02-06 | – | yes |
| 320-309 | T-Mobile | ST CLOUD | 2003-03-19 | yes | yes |
| 320-310 | Lumen | ST CLOUD | 2002-04-29 | yes | yes |
| 320-312 | FARMERS MUTUAL TELEPHONE COMPANY - MN | DAWSON | 2009-02-27 | – | yes |
| 320-313 | Onvoy | GRANITEFLS | 2003-05-14 | yes | yes |
| 320-314 | Onvoy | BENSON | 2003-05-14 | yes | yes |
| 320-315 | Lumen | GRANITEFLS | 2003-09-22 | yes | yes |
| 320-316 | Onvoy | ST CLOUD | 2012-03-22 | yes | yes |
| 320-317 | Lumen | OGILVIE | 2012-12-19 | yes | yes |
| 320-318 | Bandwidth | RUSH CITY | 2012-05-29 | yes | yes |
| 320-319 | AT&T | CLEAR LAKE | 2017-06-02 | yes | yes |
| 320-321 | Onvoy | MONTEVIDEO | 2004-01-21 | yes | yes |
| 320-322 | Lumen | PINE CITY | 2002-05-08 | yes | yes |
| 320-323 | Onvoy | PINE CITY | – | yes | yes |
| 320-324 | FEDERATED TEL. COOP. | CHOKIO | – | – | yes |
| 320-325 | Lumen | CLINTON | – | – | yes |
| 320-326 | Verizon | LITCHFIELD | 2003-01-13 | yes | yes |
| 320-327 | Lumen | SILVERLAKE | – | – | yes |
| 320-328 | Lumen | BROWNTON | – | – | yes |
| 320-329 | Lumen | RENVILLE | – | yes | yes |
| 320-330 | TERRA NOVA TELECOM INC. | ST CLOUD | – | yes | yes |
| 320-331 | MCC TELEPHONY LLC | BROWNTON | 2003-01-13 | yes | yes |
| 320-332 | Lumen | GLENCOE | 2002-11-13 | yes | yes |
| 320-333 | Verizon | ST CLOUD | – | – | yes |
| 320-334 | AT&T | GLENWOOD | 2003-04-18 | yes | yes |
| 320-335 | Onvoy | ALEXANDRIA | 2003-05-29 | yes | yes |
| 320-336 | T-Mobile | HINCKLEY | 2003-11-26 | yes | yes |
| 320-337 | Onvoy | ATWATER | 2004-01-19 | yes | yes |
| 320-338 | Lumen | GRANITEFLS | 2004-06-08 | yes | yes |
| 320-339 | AT&T | ST CLOUD | 2008-04-08 | yes | yes |
| 320-340 | MCC TELEPHONY LLC | PAYNESVL | 2006-05-15 | yes | yes |
| 320-341 | Onvoy | OGILVIE | – | yes | yes |
| 320-342 | Lumen | ST CLOUD | 2017-04-12 | yes | yes |
| 320-343 | MCC TELEPHONY OF MINNESOTA, LLC - MN | CLINTON | 2003-03-01 | yes | yes |
| 320-344 | Onvoy | HECTOR | 2004-05-19 | yes | yes |
| 320-345 | Verizon | ST CLOUD | 2004-07-14 | yes | yes |
| 320-346 | MID STATE TEL. CO. | BROOTEN | – | – | yes |
| 320-347 | Charter | NEW LONDON | 2012-06-20 | yes | yes |
| 320-348 | Onvoy | COLDSPRING | 2007-03-13 | yes | yes |
| 320-349 | Verizon | MORRIS | 2008-08-21 | yes | yes |
| 320-350 | MCC TELEPHONY OF MINNESOTA, LLC - MN | DANUBE | 2006-04-01 | yes | yes |
| 320-351 | MAINSTREET COMMUNICATIONS, LL. | SAUKCENTRE | – | – | yes |
| 320-352 | Lumen | SAUKCENTRE | – | yes | yes |
| 320-353 | MIDCONTINENT COMMUNICATIONS - MN | RICHMOND | – | – | yes |
| 320-354 | MID STATE TEL. CO. | NEW LONDON | – | – | yes |
| 320-355 | BENTON COOP. TEL. CO. | RAMEY | – | yes | yes |
| 320-356 | Lumen | AVON | – | yes | yes |
| 320-357 | Lumen | LONGPRAIRI | 2004-04-06 | yes | yes |
| 320-358 | Lumen | RUSH CITY | – | yes | yes |
| 320-359 | AT&T | HECTOR | – | yes | yes |
| 320-360 | AT&T | LITTLE FLS | – | yes | yes |
| 320-361 | Verizon | DAWSON | 2009-09-29 | yes | yes |
| 320-362 | Verizon | MILACA | 2008-10-22 | yes | yes |
| 320-363 | Lumen | ST JOSEPH | – | yes | yes |
| 320-364 | Verizon | MORA | 2008-10-21 | yes | yes |
| 320-365 | Lumen | BIRDISLAND | – | yes | yes |
| 320-366 | MID STATE TEL. CO. | SUNBURG | – | – | yes |
| 320-367 | CLARA CITY TEL. EXCH. CO. | MAYNARD | – | – | yes |
| 320-368 | Verizon | BENSON | 2008-10-21 | yes | yes |
| 320-369 | Frontier | PEASE | – | yes | yes |
| 320-370 | Charter | ST CLOUD | 2017-07-14 | yes | yes |
| 320-371 | Vonage | ST CLOUD | 2018-06-15 | yes | yes |
| 320-372 | Verizon | SANDSTONE | 2008-10-31 | yes | yes |
| 320-373 | Onvoy | LITCHFIELD | 2003-03-04 | yes | yes |
| 320-374 | TERRA NOVA TELECOM INC. | ROYALTON | 2003-04-11 | yes | yes |
| 320-375 | Verizon | SANDSTONE | 2003-04-11 | yes | yes |
| 320-376 | MIDCONTINENT COMMUNICATIONS - MN | FORESTON | – | – | yes |
| 320-377 | Lumen | GROVE CITY | 2005-03-30 | yes | yes |
| 320-378 | Onvoy | HERMAN | 2017-03-24 | yes | yes |
| 320-379 | MCC TELEPHONY OF MINNESOTA, LLC - MN | GRANITEFLS | 2010-03-17 | yes | yes |
| 320-380 | AT&T | ST CLOUD | – | yes | yes |
| 320-381 | Onvoy | CLARKFIELD | 2017-10-24 | yes | yes |
| 320-382 | Frontier | KANDIYOHI | – | yes | yes |
| 320-383 | Frontier | HAZEL RUN | – | yes | yes |
| 320-384 | Lumen | HINCKLEY | – | yes | yes |
| 320-385 | Verizon | HINCKLEY | 2008-10-21 | yes | yes |
| 320-386 | Onvoy | PINE CITY | – | yes | yes |
| 320-387 | BENTON COOP. TEL. CO. | GILMAN | – | yes | yes |
| 320-388 | Onvoy | RUSH CITY | – | yes | yes |
| 320-389 | MCC TELEPHONY LLC | BUFFALO LK | 2006-01-12 | yes | yes |
| 320-390 | Telnyx | HINCKLEY | – | yes | yes |
| 320-391 | Onvoy | ALEXANDRIA | – | yes | yes |
| 320-392 | FEDERATED TEL. COOP. | HANCOCK | – | – | yes |
| 320-393 | BENTON COOP. TEL. CO. | RICE | – | yes | yes |
| 320-394 | FEDERATED TEL. COOP. | HOLLOWAY | – | – | yes |
| 320-395 | Lumen | LESTERPRRI | – | – | yes |
| 320-396 | Lumen | BRAHAM | – | yes | yes |
| 320-397 | Verizon | MONTEVIDEO | 2003-01-13 | yes | yes |
| 320-398 | MELROSE TEL. CO. | KIMBALL | – | yes | yes |
| 320-399 | MCC TELEPHONY OF MINNESOTA, LLC - MN | IRVING | 2010-06-16 | yes | yes |
| 320-400 | AT&T | OLIVIA | 2010-11-18 | yes | yes |
| 320-401 | Charter | MAPLE LAKE | 2012-10-15 | yes | yes |
| 320-402 | NUSO, LLC | ST CLOUD | 2013-04-17 | yes | yes |
| 320-403 | AT&T | WILLMAR | 2009-06-03 | yes | yes |
| 320-404 | MCC TELEPHONY OF MINNESOTA, LLC - MN | SUNBURG | 2010-06-16 | yes | yes |
| 320-405 | T-Mobile | HUTCHINSON | 2013-05-02 | yes | yes |
| 320-406 | Verizon | ST CLOUD | 2015-10-01 | yes | yes |
| 320-407 | Onvoy | ST CLOUD | 2013-10-25 | yes | yes |
| 320-408 | Lumen | PLATO | 2014-10-24 | yes | yes |
| 320-409 | Charter | SPICER | 2012-06-20 | yes | yes |
| 320-410 | Onvoy | ASKOV | 2021-06-17 | yes | yes |
| 320-412 | T-Mobile | LITTLE FLS | 2003-01-21 | yes | yes |
| 320-413 | Verizon | APPLETON | 2008-10-21 | yes | yes |
| 320-414 | Charter | LITTLE FLS | 2006-05-04 | yes | yes |
| 320-415 | Charter | MELROSE | 2019-04-18 | yes | yes |
| 320-416 | Bandwidth | RUSH CITY | 2015-04-28 | yes | yes |
| 320-417 | Lumen | W DANBURY | 2014-12-24 | yes | yes |
| 320-418 | Charter | OSAKIS | 2019-05-07 | yes | yes |
| 320-419 | TEKSTAR COMMUNICATIONS, INC. | WILLMAR | 2019-04-22 | yes | yes |
| 320-420 | T-Mobile | ST CLOUD | – | – | yes |
| 320-421 | Lumen | ALEXANDRIA | 2001-11-16 | – | yes |
| 320-422 | Onvoy | WHEATON | 2004-04-26 | yes | yes |
| 320-423 | Verizon | ST CLOUD | 2016-09-09 | yes | yes |
| 320-424 | Verizon | GLENWOOD | 2001-12-03 | yes | yes |
| 320-425 | AT&T | BRAHAM | 2019-10-07 | yes | yes |
| 320-426 | Telnyx | ST CLOUD | 2019-12-16 | yes | yes |
| 320-427 | Onvoy | BEARDSLEY | 2020-01-06 | yes | yes |
| 320-428 | Bandwidth | ST CLOUD | 2008-05-14 | yes | yes |
| 320-429 | Verizon | SAUKCENTRE | 2008-10-21 | yes | yes |
| 320-430 | Windstream | ANNANDALE | 2016-08-26 | yes | yes |
| 320-431 | T-Mobile | LITTLE FLS | 2002-10-10 | yes | yes |
| 320-432 | Lumen | HOLMESCITY | 2005-02-22 | yes | yes |
| 320-433 | Lumen | ST JOSEPH | 2004-11-30 | yes | yes |
| 320-434 | Lumen | LITCHFIELD | 2004-12-09 | yes | yes |
| 320-435 | Verizon | MONTEVIDEO | 2020-03-31 | yes | yes |
| 320-436 | Verizon | MORA | 2020-10-07 | yes | yes |
| 320-437 | CSC WIRELESS, LLC | ST CLOUD | 2020-07-22 | yes | yes |
| 320-438 | Verizon | PINE CITY | 2008-10-21 | yes | yes |
| 320-439 | MCC TELEPHONY OF MINNESOTA, LLC - MN | HANCOCK | 2006-09-22 | yes | yes |
| 320-440 | MCC TELEPHONY OF MINNESOTA, LLC - MN | COSMOS | 2006-05-15 | yes | yes |
| 320-441 | Onvoy | WILLMAR | 2002-09-25 | yes | yes |
| 320-442 | TEKSTAR COMMUNICATIONS, INC. | LITCHFIELD | 2020-11-18 | yes | yes |
| 320-443 | AT&T | ST CLOUD | 2005-10-07 | yes | yes |
| 320-444 | Verizon | WILLMAR | 2005-07-12 | yes | yes |
| 320-445 | STRATUS NETWORKS | ALEXANDRIA | 2021-03-05 | yes | yes |
| 320-446 | MCC TELEPHONY LLC | STEWART | 2006-01-12 | yes | yes |
| 320-447 | AT&T | CLEAR LAKE | 2021-03-08 | yes | yes |
| 320-448 | IP HORIZON LLC | ST CLOUD | 2021-04-01 | yes | yes |
| 320-449 | T-Mobile | PIERZ | 2021-05-06 | yes | yes |
| 320-450 | WH LINK, LLC - MN | DASSEL | – | – | yes |
| 320-451 | Onvoy | BRAHAM | – | yes | yes |
| 320-452 | Peerless | ST CLOUD | 2021-08-25 | yes | yes |
| 320-453 | MELROSE TEL. CO. | EDENVALLEY | – | yes | yes |
| 320-455 | MCC TELEPHONY LLC | HUTCHINSON | 2006-05-22 | yes | yes |
| 320-456 | Onvoy | RAYMOND | 2004-12-28 | yes | yes |
| 320-457 | Telnyx | VILLARD | 2021-08-25 | yes | yes |
| 320-458 | Bandwidth | BIRDISLAND | 2022-01-31 | yes | yes |
| 320-459 | T-Mobile | HUTCHINSON | 2022-04-26 | yes | yes |
| 320-460 | Verizon | ALEXANDRIA | 2008-08-20 | yes | yes |
| 320-461 | Charter | BROWERVL | 2007-03-22 | yes | yes |
| 320-462 | NUSO, LLC | GLENCOE | 2022-11-07 | yes | yes |
| 320-463 | NUSO, LLC | WILLMAR | 2023-02-10 | yes | yes |
| 320-464 | Onvoy | COSMOS | 2005-01-18 | yes | yes |
| 320-465 | FRACTEL, LLC | PINE CITY | 2019-12-11 | yes | yes |
| 320-466 | FRACTEL, LLC | AVON | 2020-10-13 | yes | yes |
| 320-467 | Bandwidth | RUSH CITY | 2022-01-27 | yes | yes |
| 320-468 | Lumen | PIERZ | – | yes | yes |
| 320-469 | WORLDCELL SOLUTIONS LLC | ST CLOUD | 2005-03-09 | yes | yes |
| 320-470 | MIDWEST NETWORK SOLUTIONS HUB LLC | ST CLOUD | 2016-11-22 | yes | yes |
| 320-471 | Comcast | ST CLOUD | 2023-03-07 | yes | yes |
| 320-472 | HD CARRIER LLC | ST CLOUD | 2023-03-09 | yes | yes |
| 320-473 | Dish | ST CLOUD | 2023-04-11 | yes | yes |
| 320-474 | TEKSTAR COMMUNICATIONS, INC. | ELROSA | 2023-08-02 | yes | yes |
| 320-475 | COMMIO, LLC | AVON | 2023-08-18 | yes | yes |
| 320-476 | CALLWORKS CORPORATION | ST CLOUD | 2023-12-12 | yes | yes |
| 320-477 | AT&T | LITTLE FLS | 2025-11-05 | yes | yes |
| 320-478 | Verizon | ST CLOUD | 2024-05-01 | yes | yes |
| 320-479 | AT&T | CLEAR LAKE | 2024-07-05 | yes | yes |
| 320-480 | Telnyx | DASSEL | – | yes | yes |
| 320-481 | Verizon | MORA | 2024-10-18 | yes | yes |
| 320-482 | NUSO, LLC | ST CLOUD | 2025-01-24 | yes | yes |
| 320-484 | HUTCHINSON TEL. CO. | HUTCHINSON | – | – | yes |
| 320-485 | WINSTED TEL. CO. | WINSTED | – | yes | yes |
| 320-486 | WAVENATION, LLC | ST CLOUD | 2025-12-08 | yes | yes |
| 320-487 | MIDCONTINENT COMMUNICATIONS - MN | ORTONVILLE | 2008-05-14 | – | yes |
| 320-488 | FRACTEL, LLC | RANDALL | 2020-10-13 | yes | yes |
| 320-490 | WH LINK, LLC - MN | HOWARDLAKE | – | yes | yes |
| 320-491 | T-Mobile | ALEXANDRIA | – | yes | yes |
| 320-492 | T-Mobile | ST CLOUD | – | yes | yes |
| 320-493 | T-Mobile | ST CLOUD | 2001-09-13 | yes | yes |
| 320-495 | Frontier | WAHKON | – | yes | yes |
| 320-496 | AT&T | BRAHAM | – | yes | yes |
| 320-497 | Onvoy | ST CLOUD | 2011-02-17 | yes | yes |
| 320-499 | FRACTEL, LLC | BRANDON | 2020-10-13 | yes | yes |
| 320-500 | Verizon | ORTONVILLE | 2011-01-13 | yes | yes |
| 320-510 | Verizon | GLENCOE | 2001-12-14 | yes | yes |
| 320-514 | Onvoy | BRAHAM | – | yes | yes |
| 320-515 | T-Mobile | MORA | 2005-02-18 | yes | yes |
| 320-519 | Charter | CARLOS | 2023-10-04 | yes | yes |
| 320-520 | LEAP TELECOM, LLC | ST CLOUD | 2024-11-29 | yes | yes |
| 320-521 | WIDE VOICE, LLC - MN | ST CLOUD | 2025-03-31 | yes | yes |
| 320-522 | Verizon | OLIVIA | 2003-04-02 | yes | yes |
| 320-523 | Lumen | OLIVIA | – | yes | yes |
| 320-524 | GARDONVILLE COOP. TEL. ASSN. | BRANDON | – | – | yes |
| 320-525 | Onvoy | GARRISON | 2006-05-18 | yes | yes |
| 320-526 | Lumen | HOWARDLAKE | 2004-12-28 | yes | yes |
| 320-527 | Onvoy | SAUKCENTRE | 2006-09-29 | yes | yes |
| 320-528 | RUNESTONE TELEPHONE ASSOCIATION | BARRETT | – | yes | yes |
| 320-529 | Lumen | ST CLOUD | – | – | yes |
| 320-530 | Onvoy | PEASE | 2017-04-13 | yes | yes |
| 320-532 | Frontier | ONAMIA | – | – | yes |
| 320-533 | Onvoy | LONGPRAIRI | 2005-07-19 | yes | yes |
| 320-534 | NUSO, LLC | ST CLOUD | – | yes | yes |
| 320-535 | Onvoy | LITCHFIELD | 2005-09-10 | yes | yes |
| 320-537 | Onvoy | ISLE | – | yes | yes |
| 320-542 | Frontier | DAWSON | 2006-05-15 | yes | yes |
| 320-543 | Lumen | HOWARDLAKE | – | yes | yes |
| 320-544 | T-Mobile | HUTCHINSON | 2021-12-21 | yes | yes |
| 320-546 | TON80 COMMUNICATIONS, LLC | ATWATER | 2022-02-22 | yes | yes |
| 320-547 | Lumen | SWANVILLE | – | yes | yes |
| 320-548 | MELROSE TEL. CO. | ST MARTIN | – | – | yes |
| 320-552 | Verizon | HUTCHINSON | 2004-08-20 | yes | yes |
| 320-554 | Lumen | VILLARD | – | – | yes |
| 320-556 | BENTON COOP. TEL. CO. | BOCK | – | yes | yes |
| 320-557 | Charter | ST JOSEPH | 2006-08-22 | yes | yes |
| 320-558 | Frontier | CLEARWATER | – | yes | yes |
| 320-559 | Charter | COKATO | 2006-08-31 | yes | yes |
| 320-560 | Onvoy | PRINSBURG | 2017-03-24 | yes | yes |
| 320-562 | Lumen | STEWART | – | yes | yes |
| 320-563 | Frontier | WHEATON | – | – | yes |
| 320-564 | Lumen | GRANITEFLS | – | – | yes |
| 320-565 | MCC TELEPHONY OF MINNESOTA, LLC - MN | CHOKIO | 2006-09-22 | yes | yes |
| 320-566 | Onvoy | RUSH CITY | 2006-07-14 | yes | yes |
| 320-567 | FEDERATED TEL. COOP. | DANVERS | – | – | yes |
| 320-568 | FARMERS MUTUAL TEL. CO. | BELLINGHAM | – | – | yes |
| 320-569 | MCC TELEPHONY OF MINNESOTA, LLC - MN | MAYNARD | 2006-09-22 | yes | yes |
| 320-573 | UPSALA COOP. TEL. ASSN. | UPSALA | – | – | yes |
| 320-574 | MCC TELEPHONY OF MINNESOTA, LLC - MN | CLARA CITY | 2006-09-22 | yes | yes |
| 320-577 | T-Mobile | FORESTON | 2021-09-27 | yes | yes |
| 320-579 | AT&T | OLIVIA | – | yes | yes |
| 320-582 | AT&T | HUTCHINSON | – | yes | yes |
| 320-583 | Verizon | HUTCHINSON | – | – | yes |
| 320-584 | Lumen | ROYALTON | – | yes | yes |
| 320-585 | FEDERATED TELEPHONE COOPERATIVE - MN | MORRIS | – | – | yes |
| 320-587 | HUTCHINSON TEL. CO. | HUTCHINSON | – | – | yes |
| 320-588 | Charter | FINLAYSON | 2021-06-17 | yes | yes |
| 320-589 | Lumen | MORRIS | – | yes | yes |
| 320-591 | Lumen | PINE CITY | 2002-07-16 | yes | yes |
| 320-592 | Frontier | MCGRATH | – | yes | yes |
| 320-593 | HUTCHINSON TELECOMMUNICATIONS, INC. | LITCHFIELD | – | – | yes |
| 320-594 | Lumen | BROWERVL | – | – | yes |
| 320-595 | Onvoy | PIERZ | – | yes | yes |
| 320-596 | FEDERATED TEL. COOP. | CORRELL | – | – | yes |
| 320-597 | MELROSE TEL. CO. | RICHMOND | – | – | yes |
| 320-598 | Frontier | MADISON | – | – | yes |
| 320-599 | MID STATE TEL. CO. DBA KMP TEL. CO. | PENNOCK | – | yes | yes |
| 320-600 | Charter | COLDSPRING | 2024-02-12 | yes | yes |
| 320-613 | MCC TELEPHONY LLC | LESTERPRRI | 2006-01-12 | yes | yes |
| 320-616 | Lumen | LITTLE FLS | – | yes | yes |
| 320-620 | Onvoy | GLENCOE | 2022-10-17 | yes | yes |
| 320-626 | Lumen | DASSEL | 2004-12-28 | yes | yes |
| 320-627 | TON80 COMMUNICATIONS, LLC | ROYALTON | 2022-02-24 | yes | yes |
| 320-629 | Lumen | PINE CITY | – | – | yes |
| 320-630 | Verizon | LITTLE FLS | – | – | yes |
| 320-631 | Allstream | LITTLE FLS | – | yes | yes |
| 320-632 | Lumen | LITTLE FLS | – | – | yes |
| 320-633 | MCC TELEPHONY OF MINNESOTA, LLC - MN | BELGRADE | 2005-02-27 | yes | yes |
| 320-634 | Lumen | GLENWOOD | – | yes | yes |
| 320-635 | Onvoy | LITTLE FLS | – | – | yes |
| 320-636 | TEKSTAR COMMUNICATIONS, INC. | SOUTHHAVEN | 2018-03-13 | yes | yes |
| 320-639 | Consolidated | LITTLE FLS | 2006-11-14 | – | yes |
| 320-640 | Onvoy | ST CLOUD | 2017-03-02 | yes | yes |
| 320-644 | FRACTEL, LLC | MCGRATH | 2020-10-13 | yes | yes |
| 320-648 | Verizon | APPLETON | 2003-04-30 | yes | yes |
| 320-649 | Lumen | BIRDISLAND | 2003-04-30 | yes | yes |
| 320-650 | Lumen | ST CLOUD | – | – | yes |
| 320-654 | Lumen | ST CLOUD | – | – | yes |
| 320-655 | Brightspeed | W DANBURY | – | yes | yes |
| 320-656 | Lumen | ST CLOUD | – | – | yes |
| 320-657 | MCC TELEPHONY OF MINNESOTA, LLC - MN | GRACEVILLE | 2006-05-01 | yes | yes |
| 320-664 | Frontier | LK LILLIAN | – | yes | yes |
| 320-666 | FRACTEL, LLC | FOLEY | 2019-12-12 | yes | yes |
| 320-668 | FARMERS MUTUAL TEL. CO. | MARIETTA | – | – | yes |
| 320-669 | Frontier | CLARKFIELD | – | yes | yes |
| 320-674 | Lumen | MORA | 2008-04-02 | yes | yes |
| 320-676 | Frontier | ISLE | – | – | yes |
| 320-677 | Frontier | HERMAN | – | – | yes |
| 320-679 | Lumen | MORA | – | – | yes |
| 320-682 | Verizon | MORRIS | 2003-04-30 | yes | yes |
| 320-683 | Verizon | OLIVIA | 2003-04-30 | yes | yes |
| 320-684 | Frontier | MALMO | – | yes | yes |
| 320-685 | Lumen | COLDSPRING | – | yes | yes |
| 320-686 | SKYE TELECOM LLC DBA SKYETEL | COLDSPRING | – | yes | yes |
| 320-692 | Frontier | GARRISON | – | – | yes |
| 320-693 | Lumen | LITCHFIELD | – | – | yes |
| 320-695 | VALLEY TEL. CO. | BROWNS VLY | – | – | yes |
| 320-697 | Frontier | ELROSA | – | yes | yes |
| 320-698 | FARMERS MUTUAL TELEPHONE COMPANY - MN | MADISON | – | – | yes |
| 320-699 | AT&T | LITCHFIELD | – | yes | yes |
| 320-703 | Onvoy | BRAHAM | – | yes | yes |
| 320-722 | Lumen | GRANITEFLS | 2006-05-15 | yes | yes |
| 320-724 | FRACTEL, LLC | WATKINS | 2020-08-05 | yes | yes |
| 320-726 | T-Mobile | SAUKCENTRE | 2003-04-30 | yes | yes |
| 320-727 | Charter | ORTONVILLE | 2003-04-30 | yes | yes |
| 320-732 | Lumen | LONGPRAIRI | – | – | yes |
| 320-733 | Verizon | LITTLE FLS | 2004-07-29 | yes | yes |
| 320-734 | FEDERATED TEL. COOP. | MILAN | – | – | yes |
| 320-735 | TERRA NOVA TELECOM INC. | SWANVILLE | 2003-04-30 | yes | yes |
| 320-737 | TON80 COMMUNICATIONS, LLC | WILLMAR | 2022-02-22 | yes | yes |
| 320-738 | Onvoy | ONAMIA | 2006-12-21 | yes | yes |
| 320-742 | TON80 COMMUNICATIONS, LLC | SANDSTONE | 2022-02-17 | yes | yes |
| 320-743 | Frontier | CLEAR LAKE | – | yes | yes |
| 320-745 | Consolidated | FREEDHEM | – | – | yes |
| 320-746 | Lumen | HOLDINGFD | – | yes | yes |
| 320-748 | Lumen | GRACEVILLE | – | – | yes |
| 320-749 | Consolidated | RANDALL | – | – | yes |
| 320-752 | FARMERS MUTUAL TEL. CO. | CERROGORDO | – | – | yes |
| 320-753 | MCC TELEPHONY LLC | SILVERLAKE | 2006-01-12 | yes | yes |
| 320-758 | GARDONVILLE COOPERATIVE TELEPHONE ASSOCIATION - MN | ALEXANDRIA | 2015-10-12 | – | yes |
| 320-759 | Lumen | ALEXANDRIA | – | – | yes |
| 320-760 | Verizon | ALEXANDRIA | – | – | yes |
| 320-761 | AT&T | ST CLOUD | – | – | yes |
| 320-762 | Lumen | ALEXANDRIA | – | – | yes |
| 320-763 | Lumen | ALEXANDRIA | – | – | yes |
| 320-764 | MELROSE TEL. CO. | WATKINS | – | yes | yes |
| 320-765 | SACRED HEART TEL. CO. | SACREDHERT | – | – | yes |
| 320-766 | AT&T | ALEXANDRIA | – | – | yes |
| 320-767 | TON80 COMMUNICATIONS, LLC | MILACA | 2022-03-14 | yes | yes |
| 320-769 | Frontier | DAWSON | – | – | yes |
| 320-774 | Onvoy | ST CLOUD | 2006-03-20 | yes | yes |
| 320-775 | T-Mobile | BOCK | 2021-06-21 | yes | yes |
| 320-777 | FRACTEL, LLC | SAUKCENTRE | 2020-06-17 | yes | yes |
| 320-779 | AT&T | GLENCOE | – | yes | yes |
| 320-782 | TON80 COMMUNICATIONS, LLC | HECTOR | 2022-02-22 | yes | yes |
| 320-793 | FEDERATED TEL. COOP. | BIG BEND | – | – | yes |
| 320-795 | RUNESTONE TELEPHONE ASSOCIATION | CYRUS | – | yes | yes |
| 320-796 | MID STATE TEL. CO. | SPICER | – | – | yes |
| 320-799 | FRACTEL, LLC | WAHKON | 2020-10-13 | yes | yes |
| 320-800 | FRACTEL, LLC | ST CLOUD | 2019-09-12 | yes | yes |
| 320-803 | Onvoy | SWANVILLE | 2013-08-22 | yes | yes |
| 320-805 | Verizon | GLENWOOD | 2008-10-21 | yes | yes |
| 320-808 | Verizon | ALEXANDRIA | – | – | yes |
| 320-815 | Verizon | ALEXANDRIA | – | – | yes |
| 320-818 | MIDCONTINENT COMMUNICATIONS - MN | FOLEY | 2011-08-25 | yes | yes |
| 320-822 | FRACTEL, LLC | MILLERVL | 2020-10-13 | yes | yes |
| 320-826 | MID STATE TEL. CO. DBA KMP TEL. CO. | DANUBE | – | – | yes |
| 320-828 | T-Mobile | ST CLOUD | 2006-09-26 | yes | yes |
| 320-832 | TON80 COMMUNICATIONS, LLC | BROWNTON | 2022-02-16 | yes | yes |
| 320-833 | Lumen | BUFFALO LK | – | yes | yes |
| 320-834 | GARDONVILLE COOP. TEL. ASSN. | GARFIELD | – | – | yes |
| 320-836 | ALBANY MUTUAL TEL. ASSN., INC. | FREEPORT | – | – | yes |
| 320-837 | ALBANY MUTUAL TEL. ASSN., INC. | NEW MUNICH | – | – | yes |
| 320-838 | Frontier | ASKOV | – | yes | yes |
| 320-839 | Lumen | ORTONVILLE | – | yes | yes |
| 320-840 | Charter | ALBANY | 2018-09-24 | yes | yes |
| 320-841 | AT&T | MONTEVIDEO | – | yes | yes |
| 320-842 | Lumen | BENSON | – | yes | yes |
| 320-843 | Lumen | BENSON | – | yes | yes |
| 320-844 | Onvoy | AVON | – | yes | yes |
| 320-845 | ALBANY MUTUAL TEL. ASSN., INC. | ALBANY | – | – | yes |
| 320-846 | Lumen | ALEXANDRIA | – | – | yes |
| 320-847 | CLARA CITY TEL. EXCH. CO. | CLARA CITY | – | – | yes |
| 320-848 | Frontier | HECTOR | – | – | yes |
| 320-849 | FEDERATED TELEPHONE COOPERATIVE - MN | ORTONVILLE | 2015-04-30 | yes | yes |
| 320-850 | Charter | FOLEY | 2024-02-12 | yes | yes |
| 320-852 | Lumen | CARLOS | – | yes | yes |
| 320-853 | MCC TELEPHONY OF MINNESOTA, LLC - MN | MADISON | 2006-05-16 | yes | yes |
| 320-854 | HUTCHINSON TELECOMMUNICATIONS, INC. | GLENCOE | 2012-09-04 | – | yes |
| 320-855 | Frontier | BOYD | – | yes | yes |
| 320-857 | Lumen | GROVE CITY | – | – | yes |
| 320-859 | OSAKIS TEL. CO. | OSAKIS | – | – | yes |
| 320-864 | Lumen | GLENCOE | – | yes | yes |
| 320-865 | TON80 COMMUNICATIONS, LLC | OGILVIE | 2022-02-16 | yes | yes |
| 320-867 | COMMIO, LLC | ST CLOUD | 2023-04-03 | yes | yes |
| 320-869 | EXIANT COMMUNICATIONS LLC | ST CLOUD | 2026-03-30 | yes | yes |
| 320-870 | MCC TELEPHONY OF MINNESOTA, LLC - MN | STARBUCK | 2006-09-22 | yes | yes |
| 320-874 | Verizon | LONGPRAIRI | 2008-10-21 | yes | yes |
| 320-875 | MID STATE TEL. CO. DBA KMP TEL. CO. | MURDOCK | – | yes | yes |
| 320-876 | GARDONVILLE COOP. TEL. ASSN. | MILLERVL | – | – | yes |
| 320-877 | Frontier | COSMOS | – | – | yes |
| 320-880 | 8x8 | ST CLOUD | 2026-09-14 | yes | no |
| 320-886 | Lumen | HOLMESCITY | – | – | yes |
| 320-887 | TON80 COMMUNICATIONS, LLC | BENSON | 2022-02-24 | yes | yes |
| 320-888 | Telnyx | OGILVIE | 2017-02-28 | yes | yes |
| 320-889 | TON80 COMMUNICATIONS, LLC | MORRIS | 2022-02-28 | yes | yes |
| 320-894 | Verizon | WILLMAR | – | – | yes |
| 320-895 | Twilio | ST CLOUD | 2022-03-30 | yes | yes |
| 320-899 | FRACTEL, LLC | PENNOCK | 2020-10-13 | yes | yes |
| 320-900 | FRACTEL, LLC | CLEARWATER | 2019-09-12 | yes | yes |
| 320-905 | Verizon | WILLMAR | – | – | yes |
| 320-910 | Onvoy | ST CLOUD | 2021-04-01 | yes | yes |
| 320-923 | Onvoy | RUSH CITY | – | yes | yes |
| 320-933 | FRACTEL, LLC | KIMBALL | 2020-10-13 | yes | yes |
| 320-942 | TON80 COMMUNICATIONS, LLC | PINE CITY | 2022-02-17 | yes | yes |
| 320-946 | FRACTEL, LLC | SACREDHERT | 2020-07-14 | yes | yes |
| 320-961 | TERRA NOVA TELECOM INC. | OGILVIE | 2003-04-30 | yes | yes |
| 320-963 | Windstream | MAPLE LAKE | – | – | yes |
| 320-964 | Bandwidth | PINE CITY | 2003-04-30 | yes | yes |
| 320-965 | RUNESTONE TELEPHONE ASSOCIATION | KENSINGTON | – | yes | yes |
| 320-966 | FRACTEL, LLC | ST MARTIN | 2020-10-13 | yes | yes |
| 320-967 | Frontier | RAYMOND | – | – | yes |
| 320-968 | Lumen | FOLEY | – | yes | yes |
| 320-974 | Frontier | ATWATER | – | – | yes |
| 320-977 | FRACTEL, LLC | HOLDINGFD | 2020-06-17 | yes | yes |
| 320-978 | Frontier | PRINSBURG | – | – | yes |
| 320-979 | Verizon | WILLMAR | – | – | yes |
| 320-980 | T-Mobile | ST CLOUD | – | yes | yes |
| 320-981 | AT&T | GRANITEFLS | – | yes | yes |
| 320-982 | LOCAL ACCESS NETWORK, LLC | MILACA | – | yes | yes |
| 320-983 | Frontier | MILACA | – | yes | yes |
| 320-986 | RUNESTONE TELEPHONE ASSOCIATION | HOFFMAN | – | yes | yes |
| 320-987 | MELROSE TEL. CO. | GREENWALD | – | yes | yes |
| 320-993 | MCC TELEPHONY OF MINNESOTA, LLC - MN | BROOTEN | 2006-05-15 | yes | yes |
| 320-995 | Frontier | SVEA | – | yes | yes |
| 320-999 | TERRA NOVA TELECOM INC. | SANDSTONE | 2019-01-16 | yes | yes |
Frequently asked
How many prefixes does area code 320 have?
511 NXX blocks are assigned of 786 possible. Each block is 10,000 consecutive numbers, so the code currently covers about 5,110 thousand-number ranges across 145 rate centers.
What do the first three digits after 320 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 320 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 320 table?
That the block is in thousands-block pooling: carriers draw 1,000-number lots from it instead of taking all 10,000. 369 of 320'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.
More about this code: overview · carriers · spam complaints · local time