Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
Area code 574 prefixes
403 of the 786 possible NXX blocks are assigned in area code 574 (51.3% of capacity), spread across 59 rate centers and 47 holders. The largest holders are NEW CINGULAR WIRELESS PCS, LLC - IL (49 blocks, 12.2%), FRONTIER NORTH, INC.. - IN (45 blocks, 11.2%), INDIANA BELL TEL CO INC (43 blocks, 10.7%). Grouped by brand, AT&T accounts for 101 blocks; brand-attributable holders cover 86% 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 2001-01-04 to 2026-07-10, with 40 blocks handed out in 2002 alone. 301 blocks (75%) 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. 59 were growth assignments – additional blocks to a carrier that had already filled its earlier ones.
403 assigned blocks of 786
59 rate centers
47 holders of record
75% in thousands-block pooling
Largest holders in 574
| Holder of record, as NANPA names it | Brand | Blocks | Share |
|---|---|---|---|
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 49 | 12.2% |
| FRONTIER NORTH, INC.. - IN | Frontier | 45 | 11.2% |
| INDIANA BELL TEL CO INC | AT&T | 43 | 10.7% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | Verizon | 38 | 9.4% |
| BRIGHTSPEED OF INDIANA, LLC | Brightspeed | 35 | 8.7% |
| OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | T-Mobile | 28 | 6.9% |
| LEVEL 3 COMMUNICATIONS, LLC - IN | Lumen | 26 | 6.5% |
| ONVOY, LLC - IN | Onvoy | 24 | 6% |
| FRACTEL, LLC | – | 11 | 2.7% |
| METROPCS, INC. | T-Mobile | 10 | 2.5% |
| PAETEC ITEL, LLC | Windstream | 9 | 2.2% |
| T-MOBILE USA, INC. | T-Mobile | 7 | 1.7% |
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.
SOUTH BEND 113ELKHART 46GOSHEN 21LOGANSPORT 18PLYMOUTH 16WARSAW 13OSCEOLA 13SYRACUSE 8ROCHESTER 6NAPPANEE 6MONTICELLO 6LEESBURG 6WINAMAC 5KNOX 5BREMEN 5CULVER 5KEWANNA 5MIDDLEBURY 5MILLWOOD 4ARGOS 4NEWCARLISL 4BRISTOL 4MILLERSBG 4DUNLAP 4LAPAZ 3BURNETTSVL 3NO WEBSTER 3TIPPECANOE 3WALKERTON 3FLORA 3TWELVEMILE 3NO LIBERTY 3BURKET 3AKRON 3ROYAL CTR 3LUCERNE 3MILFORD 3
All 403 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 |
|---|---|---|---|---|---|
| 574-200 | AT&T | WINAMAC | 2009-12-21 | yes | yes |
| 574-201 | AT&T | ROCHESTER | 2011-11-16 | yes | yes |
| 574-202 | AT&T | GOSHEN | – | – | yes |
| 574-203 | Lumen | LAPAZ | 2002-06-04 | yes | yes |
| 574-204 | FBN INDIANA, INC. - IN | SOUTH BEND | – | yes | yes |
| 574-205 | Lumen | WINAMAC | 2002-07-23 | yes | yes |
| 574-206 | Frontier | ELKHART | – | yes | yes |
| 574-207 | Lumen | KNOX | 2002-07-23 | yes | yes |
| 574-208 | AT&T | SOUTH BEND | – | yes | yes |
| 574-209 | AT&T | BREMEN | – | yes | yes |
| 574-210 | AT&T | SOUTH BEND | – | – | yes |
| 574-212 | Lumen | MONTEREY | 2002-06-04 | yes | yes |
| 574-213 | Bandwidth | SOUTH BEND | 2012-04-10 | yes | yes |
| 574-214 | AT&T | ELKHART | – | yes | yes |
| 574-215 | AT&T | ELKHART | – | – | yes |
| 574-216 | AT&T | CULVER | – | yes | yes |
| 574-217 | Lumen | SOUTH BEND | 2002-05-23 | yes | yes |
| 574-218 | T-Mobile | ELKHART | 2014-03-03 | yes | yes |
| 574-220 | AT&T | SOUTH BEND | – | – | yes |
| 574-221 | T-Mobile | NAPPANEE | 2002-09-25 | yes | yes |
| 574-222 | Windstream | SOUTH BEND | 2011-05-31 | yes | yes |
| 574-223 | ROCHESTER TEL. CO., INC. | ROCHESTER | – | – | yes |
| 574-224 | ROCHESTER TEL. CO., INC. | ROCHESTER | – | – | yes |
| 574-225 | AT&T | WINAMAC | – | yes | yes |
| 574-226 | T-Mobile | ELKHART | 2002-09-17 | yes | yes |
| 574-227 | AT&T | MILLWOOD | – | yes | yes |
| 574-228 | Lumen | BURNETTSVL | 2002-06-04 | yes | yes |
| 574-229 | Verizon | SOUTH BEND | – | – | yes |
| 574-230 | Lumen | KEWANNA | 2002-07-23 | yes | yes |
| 574-231 | AT&T | SOUTH BEND | – | yes | yes |
| 574-232 | AT&T | SOUTH BEND | – | – | yes |
| 574-233 | AT&T | SOUTH BEND | – | – | yes |
| 574-234 | AT&T | SOUTH BEND | – | – | yes |
| 574-235 | AT&T | SOUTH BEND | – | – | yes |
| 574-236 | AT&T | SOUTH BEND | – | – | yes |
| 574-237 | AT&T | SOUTH BEND | – | – | yes |
| 574-238 | Verizon | GOSHEN | 2002-06-19 | – | yes |
| 574-239 | AT&T | SOUTH BEND | – | yes | yes |
| 574-240 | PULASKI-WHITE RURAL TELEPHONE COOPERATIVE, INC. | MONTICELLO | 2013-10-14 | yes | yes |
| 574-241 | Lumen | NO JUDSON | 2002-06-04 | yes | yes |
| 574-242 | Verizon | WINAMAC | 2002-07-25 | yes | yes |
| 574-243 | AT&T | SOUTH BEND | – | – | yes |
| 574-244 | Lumen | NO WEBSTER | 2002-06-04 | yes | yes |
| 574-245 | AT&T | SOUTH BEND | – | yes | yes |
| 574-246 | AT&T | SOUTH BEND | – | – | yes |
| 574-247 | AT&T | SOUTH BEND | – | – | yes |
| 574-248 | Verizon | BREMEN | 2002-06-19 | yes | yes |
| 574-249 | Verizon | KNOX | 2002-07-22 | yes | yes |
| 574-250 | AT&T | SOUTH BEND | – | – | yes |
| 574-251 | AT&T | SOUTH BEND | – | – | yes |
| 574-252 | AT&T | SOUTH BEND | – | yes | yes |
| 574-253 | Lumen | LEESBURG | 2002-07-23 | yes | yes |
| 574-254 | AT&T | SOUTH BEND | – | – | yes |
| 574-255 | AT&T | SOUTH BEND | – | – | yes |
| 574-256 | AT&T | SOUTH BEND | – | yes | yes |
| 574-257 | AT&T | SOUTH BEND | – | – | yes |
| 574-258 | AT&T | SOUTH BEND | – | – | yes |
| 574-259 | AT&T | SOUTH BEND | – | – | yes |
| 574-261 | Verizon | SOUTH BEND | 2002-08-05 | – | yes |
| 574-262 | Frontier | ELKHART | – | – | yes |
| 574-263 | Lumen | TIPPECANOE | 2002-05-10 | yes | yes |
| 574-264 | Frontier | ELKHART | – | – | yes |
| 574-265 | T-Mobile | WARSAW | 2001-03-30 | yes | yes |
| 574-266 | Frontier | ELKHART | – | – | yes |
| 574-267 | Brightspeed | WARSAW | – | – | yes |
| 574-268 | Brightspeed | WARSAW | – | yes | yes |
| 574-269 | Brightspeed | WARSAW | – | – | yes |
| 574-270 | Verizon | STAR CITY | 2002-07-30 | yes | yes |
| 574-271 | AT&T | SOUTH BEND | – | – | yes |
| 574-272 | AT&T | SOUTH BEND | – | – | yes |
| 574-273 | AT&T | SOUTH BEND | – | yes | yes |
| 574-274 | Verizon | SOUTH BEND | – | – | yes |
| 574-275 | T-Mobile | SYRACUSE | 2002-09-25 | yes | yes |
| 574-276 | Verizon | SOUTH BEND | – | – | yes |
| 574-277 | AT&T | SOUTH BEND | – | – | yes |
| 574-278 | PULASKI-WHITE RURAL TEL. COOP., INC. | BUFFALO | – | – | yes |
| 574-279 | Lumen | WALKERTON | 2002-07-23 | yes | yes |
| 574-280 | AT&T | SOUTH BEND | – | – | yes |
| 574-281 | Lumen | ARGOS | 2002-07-23 | yes | yes |
| 574-282 | AT&T | SOUTH BEND | – | – | yes |
| 574-283 | AT&T | SOUTH BEND | – | – | yes |
| 574-284 | AT&T | SOUTH BEND | – | yes | yes |
| 574-285 | Lumen | NAPPANEE | 2002-07-23 | yes | yes |
| 574-286 | Verizon | SOUTH BEND | – | – | yes |
| 574-287 | AT&T | SOUTH BEND | – | – | yes |
| 574-288 | AT&T | SOUTH BEND | – | – | yes |
| 574-289 | AT&T | SOUTH BEND | – | – | yes |
| 574-290 | AT&T | KEWANNA | 2011-06-14 | yes | yes |
| 574-291 | AT&T | SOUTH BEND | – | – | yes |
| 574-292 | AT&T | SOUTH BEND | – | yes | yes |
| 574-293 | Frontier | ELKHART | – | – | yes |
| 574-294 | Frontier | ELKHART | – | – | yes |
| 574-295 | Frontier | ELKHART | – | – | yes |
| 574-296 | Frontier | ELKHART | – | – | yes |
| 574-297 | T-Mobile | MONTICELLO | 2002-07-23 | yes | yes |
| 574-298 | AT&T | SOUTH BEND | – | – | yes |
| 574-299 | AT&T | SOUTH BEND | – | yes | yes |
| 574-300 | T-Mobile | SOUTH BEND | 2010-11-29 | yes | yes |
| 574-301 | T-Mobile | BREMEN | 2003-03-21 | yes | yes |
| 574-302 | AT&T | SOUTH BEND | 2003-06-04 | yes | yes |
| 574-303 | T-Mobile | SOUTH BEND | 2003-06-04 | yes | yes |
| 574-304 | Verizon | ELKHART | – | yes | yes |
| 574-305 | AT&T | MILLWOOD | – | yes | yes |
| 574-306 | Lumen | WARSAW | 2002-05-10 | yes | yes |
| 574-307 | Onvoy | SOUTH BEND | 2008-10-23 | yes | yes |
| 574-308 | FBN INDIANA, INC. - IN | NEWCARLISL | 2004-02-06 | – | yes |
| 574-309 | Verizon | SOUTH BEND | 2003-10-30 | yes | yes |
| 574-310 | T-Mobile | SOUTH BEND | 2003-04-29 | yes | yes |
| 574-312 | Verizon | GOSHEN | 2005-11-21 | yes | yes |
| 574-313 | Lumen | FLORA | 2004-04-29 | yes | yes |
| 574-314 | Verizon | SOUTH BEND | 2014-12-16 | yes | yes |
| 574-315 | T-Mobile | SOUTH BEND | – | yes | yes |
| 574-316 | Bandwidth | PLYMOUTH | 2009-09-09 | yes | yes |
| 574-317 | COMMIO, LLC | BRISTOL | 2023-09-12 | yes | yes |
| 574-318 | Bandwidth | SOUTH BEND | 2012-09-27 | yes | yes |
| 574-319 | Onvoy | TWELVEMILE | 2016-03-22 | yes | yes |
| 574-320 | T-Mobile | ELKHART | – | yes | yes |
| 574-321 | Verizon | ROCHESTER | – | yes | yes |
| 574-322 | T-Mobile | ELKHART | 2003-05-01 | yes | yes |
| 574-323 | AT&T | SOUTH BEND | – | yes | yes |
| 574-324 | FBN INDIANA, INC. - IN | NO LIBERTY | 2004-02-06 | – | yes |
| 574-325 | Lumen | SYRACUSE | 2004-04-06 | yes | yes |
| 574-326 | T-Mobile | ELKHART | 2011-07-22 | yes | yes |
| 574-327 | T-Mobile | ELKHART | 2013-04-26 | yes | yes |
| 574-328 | AT&T | BURKET | – | yes | yes |
| 574-329 | T-Mobile | OSCEOLA | – | yes | yes |
| 574-330 | Lumen | MILLERSBG | 2005-02-15 | yes | yes |
| 574-331 | Lumen | BREMEN | 2002-07-23 | yes | yes |
| 574-332 | AT&T | ARGOS | – | yes | yes |
| 574-333 | COMMUNICATIONS VENTURE CORP DBA INDIGITAL TELECOM | ELKHART | 2005-08-29 | yes | yes |
| 574-334 | Verizon | SOUTH BEND | 2012-10-08 | yes | yes |
| 574-335 | AT&T | SOUTH BEND | 2008-12-05 | yes | yes |
| 574-336 | Verizon | LOGANSPORT | 2018-11-08 | yes | yes |
| 574-337 | MCC TELEPHONY OF THE MID-WEST, LLC - IN | SYRACUSE | 2010-04-15 | yes | yes |
| 574-338 | Comcast | ELKHART | 2017-10-27 | yes | yes |
| 574-339 | AT&T | SOUTH BEND | 2002-02-15 | yes | yes |
| 574-340 | AT&T | SOUTH BEND | – | – | yes |
| 574-341 | AT&T | PLYMOUTH | 2009-12-01 | yes | yes |
| 574-342 | Frontier | BOURBON | – | yes | yes |
| 574-343 | T-Mobile | ELKHART | 2006-09-11 | yes | yes |
| 574-344 | AT&T | SOUTH BEND | 2006-04-28 | yes | yes |
| 574-345 | Vonage | SOUTH BEND | 2018-04-04 | yes | yes |
| 574-346 | Peerless | ELKHART | 2019-09-18 | yes | yes |
| 574-347 | T-Mobile | SOUTH BEND | 2014-12-15 | yes | yes |
| 574-348 | MCC TELEPHONY OF THE MID-WEST, LLC - IN | HAMLET | 2007-11-30 | yes | yes |
| 574-349 | Verizon | GOSHEN | 2010-02-04 | yes | yes |
| 574-350 | Verizon | ELKHART | 2008-03-13 | yes | yes |
| 574-351 | Comcast | BURROWS | 2010-04-05 | – | yes |
| 574-352 | CSC WIRELESS, LLC | ELKHART | 2020-06-26 | yes | yes |
| 574-353 | Frontier | MENTONE | – | yes | yes |
| 574-354 | Verizon | NAPPANEE | 2003-01-22 | yes | yes |
| 574-355 | T-Mobile | LOGANSPORT | 2003-11-26 | yes | yes |
| 574-356 | T-Mobile | NAPPANEE | 2003-11-26 | yes | yes |
| 574-357 | NUSO, LLC | CULVER | 2020-09-24 | yes | yes |
| 574-358 | T-Mobile | MIDDLEBURY | 2002-09-17 | yes | yes |
| 574-359 | AT&T | ELKHART | 2020-11-04 | yes | yes |
| 574-360 | Verizon | SOUTH BEND | – | – | yes |
| 574-361 | Verizon | ELKHART | – | – | yes |
| 574-362 | FBN INDIANA, INC. - IN | MILLERSBG | 2004-02-06 | – | yes |
| 574-363 | MCC TELEPHONY OF THE MID-WEST, LLC - IN | BOURBON | 2010-06-17 | yes | yes |
| 574-364 | Frontier | GOSHEN | 2010-08-03 | yes | yes |
| 574-365 | Onvoy | FULTON | 2020-10-07 | yes | yes |
| 574-366 | STRATUS NETWORKS | SOUTH BEND | 2020-11-25 | yes | yes |
| 574-367 | Onvoy | SOUTH BEND | 2010-03-29 | yes | yes |
| 574-368 | AT&T | ELKHART | 2021-01-06 | yes | yes |
| 574-369 | Verizon | ELKHART | 2021-01-14 | yes | yes |
| 574-370 | Verizon | ELKHART | – | – | yes |
| 574-371 | Brightspeed | WARSAW | – | yes | yes |
| 574-372 | Brightspeed | WARSAW | – | – | yes |
| 574-373 | Brightspeed | WARSAW | 2016-09-12 | yes | yes |
| 574-374 | Charter | GOSHEN | 2021-05-10 | yes | yes |
| 574-375 | Onvoy | TIPPECANOE | 2021-06-24 | yes | yes |
| 574-376 | T-Mobile | WARSAW | 2002-03-14 | yes | yes |
| 574-377 | Verizon | LEESBURG | 2005-08-30 | yes | yes |
| 574-378 | IP HORIZON LLC | SOUTH BEND | 2021-09-14 | yes | yes |
| 574-379 | COMMIO, LLC | AKRON | 2021-09-23 | yes | yes |
| 574-380 | Lumen | ATWOOD | – | yes | yes |
| 574-381 | Windstream | SOUTH BEND | 2022-03-14 | yes | yes |
| 574-382 | Frontier | MACY | – | yes | yes |
| 574-383 | T-Mobile | SOUTH BEND | 2002-01-15 | yes | yes |
| 574-384 | Onvoy | KNOX | 2021-11-04 | yes | yes |
| 574-385 | Onvoy | WARSAW | – | yes | yes |
| 574-386 | T-Mobile | SOUTH BEND | 2002-04-11 | yes | yes |
| 574-387 | AT&T | SOUTH BEND | 2008-03-07 | yes | yes |
| 574-388 | Onvoy | LAPAZ | 2021-09-22 | yes | yes |
| 574-389 | Frontier | ELKHART | – | yes | yes |
| 574-390 | Verizon | ELKHART | 2022-09-21 | yes | yes |
| 574-391 | NUSO, LLC | KEWANNA | 2022-10-11 | yes | yes |
| 574-392 | Verizon | GOSHEN | 2023-01-10 | yes | yes |
| 574-393 | AT&T | SOUTH BEND | 2016-07-07 | yes | yes |
| 574-394 | Onvoy | WARSAW | 2024-03-13 | yes | yes |
| 574-395 | NUSO, LLC | SOUTH BEND | 2023-02-01 | yes | yes |
| 574-396 | AT&T | OSCEOLA | 2023-02-24 | yes | yes |
| 574-397 | HD CARRIER LLC | SOUTH BEND | 2023-03-08 | yes | yes |
| 574-398 | T-Mobile | LOGANSPORT | 2008-09-02 | yes | yes |
| 574-399 | AT&T | ELKHART | 2023-10-16 | yes | yes |
| 574-400 | MCC TELEPHONY OF THE MID-WEST, LLC - IN | SOUTH BEND | 2010-12-20 | yes | yes |
| 574-401 | NUSO, LLC | SOUTH BEND | 2012-11-08 | yes | yes |
| 574-402 | T-Mobile | SOUTH BEND | 2016-06-24 | yes | yes |
| 574-403 | Verizon | ELKHART | 2025-08-18 | yes | yes |
| 574-404 | Windstream | SOUTH BEND | 2014-06-27 | yes | yes |
| 574-405 | Onvoy | NAPPANEE | 2024-06-24 | yes | yes |
| 574-406 | Onvoy | SOUTH BEND | 2014-12-17 | yes | yes |
| 574-407 | AT&T | GOSHEN | 2024-07-11 | yes | yes |
| 574-408 | Peerless | PLYMOUTH | 2025-01-23 | yes | yes |
| 574-409 | Onvoy | SOUTH BEND | 2025-03-13 | yes | yes |
| 574-410 | Verizon | LEESBURG | 2025-04-03 | yes | yes |
| 574-412 | Onvoy | SOUTH BEND | 2025-09-22 | yes | yes |
| 574-413 | AT&T | SOUTH BEND | 2016-06-09 | yes | yes |
| 574-414 | AT&T | SOUTH BEND | 2025-09-22 | yes | yes |
| 574-415 | WAVENATION, LLC | SOUTH BEND | 2025-12-04 | yes | yes |
| 574-440 | AT&T | SOUTH BEND | 2008-10-21 | yes | yes |
| 574-444 | Onvoy | OSCEOLA | 2015-11-17 | yes | yes |
| 574-453 | Brightspeed | LEESBURG | – | yes | yes |
| 574-457 | Brightspeed | SYRACUSE | – | yes | yes |
| 574-465 | FRACTEL, LLC | ROYAL CTR | 2019-07-17 | yes | yes |
| 574-472 | AT&T | SOUTH BEND | – | – | yes |
| 574-475 | Onvoy | LUCERNE | 2018-09-19 | yes | yes |
| 574-485 | Onvoy | SOUTH BEND | 2006-11-15 | yes | yes |
| 574-491 | Frontier | BURKET | – | yes | yes |
| 574-498 | Frontier | TIPPECANOE | – | yes | yes |
| 574-500 | FRACTEL, LLC | GOSHEN | 2019-01-25 | yes | yes |
| 574-501 | Onvoy | GOSHEN | 2020-08-13 | yes | yes |
| 574-505 | AT&T | MACY | – | yes | yes |
| 574-514 | T-Mobile | SOUTH BEND | 2001-03-06 | yes | yes |
| 574-516 | T-Mobile | LOGANSPORT | 2001-07-02 | yes | yes |
| 574-518 | AT&T | SYRACUSE | – | yes | yes |
| 574-520 | AT&T | SOUTH BEND | – | yes | yes |
| 574-521 | AT&T | SYRACUSE | – | yes | yes |
| 574-522 | Frontier | ELKHART | – | – | yes |
| 574-523 | Frontier | ELKHART | – | – | yes |
| 574-524 | Frontier | ELKHART | – | yes | yes |
| 574-526 | Brightspeed | LEESBURG | – | yes | yes |
| 574-527 | Verizon | LEESBURG | – | – | yes |
| 574-528 | Brightspeed | SYRACUSE | – | yes | yes |
| 574-529 | Verizon | SYRACUSE | – | yes | yes |
| 574-532 | T-Mobile | SOUTH BEND | – | yes | yes |
| 574-533 | Frontier | GOSHEN | – | – | yes |
| 574-534 | Frontier | GOSHEN | – | – | yes |
| 574-535 | Frontier | GOSHEN | – | yes | yes |
| 574-536 | Verizon | GOSHEN | – | – | yes |
| 574-537 | Frontier | GOSHEN | – | – | yes |
| 574-538 | Frontier | GOSHEN | – | yes | yes |
| 574-540 | T-Mobile | PLYMOUTH | 2001-08-09 | yes | yes |
| 574-542 | Brightspeed | MONTEREY | – | yes | yes |
| 574-544 | COMMIO, LLC | SOUTH BEND | 2019-05-08 | yes | yes |
| 574-546 | Brightspeed | BREMEN | – | yes | yes |
| 574-549 | AT&T | WARSAW | – | yes | yes |
| 574-551 | AT&T | WARSAW | – | – | yes |
| 574-564 | Onvoy | ELKHART | 2018-09-21 | yes | yes |
| 574-566 | Frontier | CLAYPOOL | – | yes | yes |
| 574-570 | Onvoy | PLYMOUTH | 2021-05-26 | yes | yes |
| 574-574 | Onvoy | GOSHEN | 2022-09-26 | yes | yes |
| 574-575 | AT&T | ELKHART | 2002-08-27 | yes | yes |
| 574-577 | Onvoy | ROYAL CTR | 2021-06-18 | yes | yes |
| 574-581 | AT&T | MONTICELLO | – | yes | yes |
| 574-583 | Brightspeed | MONTICELLO | – | – | yes |
| 574-584 | FBN INDIANA, INC. - IN | ELKHART | – | yes | yes |
| 574-586 | Brightspeed | WALKERTON | – | yes | yes |
| 574-587 | OPENTACT INC. | SOUTH BEND | 2026-07-10 | yes | yes |
| 574-594 | Brightspeed | PIERCETON | – | – | yes |
| 574-595 | PULASKI-WHITE RURAL TEL. COOP., INC. | STAR CITY | – | – | yes |
| 574-596 | Verizon | ELKHART | – | – | yes |
| 574-598 | RTC COMMUNICATIONS CORP. | AKRON | – | yes | yes |
| 574-600 | FRACTEL, LLC | CULVER | 2019-03-15 | yes | yes |
| 574-601 | T-Mobile | LOGANSPORT | 2001-08-09 | yes | yes |
| 574-603 | AT&T | BURNETTSVL | – | yes | yes |
| 574-606 | T-Mobile | ELKHART | 2002-01-15 | yes | yes |
| 574-607 | T-Mobile | OSCEOLA | – | yes | yes |
| 574-612 | Verizon | ELKHART | 2001-01-31 | yes | yes |
| 574-621 | T-Mobile | OSCEOLA | – | yes | yes |
| 574-622 | Comcast | BRISTOL | 2005-07-13 | yes | yes |
| 574-626 | Frontier | WALTON | – | yes | yes |
| 574-631 | AT&T | SOUTH BEND | – | – | yes |
| 574-633 | Frontier | WYATT | – | yes | yes |
| 574-634 | AT&T | SOUTH BEND | – | – | yes |
| 574-635 | AT&T | CULVER | 2009-11-16 | yes | yes |
| 574-641 | COMMUNICATIONS VENTURE CORP DBA INDIGITAL TELECOM | MILLERSBG | 2006-07-28 | – | yes |
| 574-642 | Brightspeed | MILLERSBG | – | – | yes |
| 574-643 | Frontier | ROYAL CTR | – | yes | yes |
| 574-646 | Frontier | MILLWOOD | – | yes | yes |
| 574-647 | AT&T | SOUTH BEND | 2002-11-12 | yes | yes |
| 574-651 | AT&T | OSCEOLA | – | yes | yes |
| 574-652 | CAMDEN TEL. CO., INC. | BURROWS | – | yes | yes |
| 574-653 | Brightspeed | KEWANNA | – | yes | yes |
| 574-654 | Brightspeed | NEWCARLISL | – | – | yes |
| 574-655 | Lumen | FLORA | 2005-01-06 | yes | yes |
| 574-656 | Brightspeed | NO LIBERTY | – | – | yes |
| 574-658 | Brightspeed | MILFORD | – | – | yes |
| 574-663 | TON80 COMMUNICATIONS, LLC | MIDDLEBURY | 2022-01-13 | yes | yes |
| 574-664 | Brightspeed | TWELVEMILE | – | yes | yes |
| 574-666 | FRACTEL, LLC | SOUTH BEND | 2019-01-25 | yes | yes |
| 574-667 | FRACTEL, LLC | OSCEOLA | 2021-05-20 | yes | yes |
| 574-674 | AT&T | OSCEOLA | – | – | yes |
| 574-675 | AT&T | OSCEOLA | – | yes | yes |
| 574-678 | Verizon | MILFORD | 2006-03-20 | yes | yes |
| 574-679 | AT&T | OSCEOLA | – | – | yes |
| 574-686 | CAMDEN TEL. CO., INC. | CAMDEN | – | yes | yes |
| 574-688 | MCC TELEPHONY OF THE MID-WEST, LLC - IN | PIERCETON | 2006-03-22 | yes | yes |
| 574-696 | Lumen | MILFORD | 2005-09-22 | yes | yes |
| 574-699 | Frontier | GALVESTON | – | yes | yes |
| 574-701 | Lumen | GALVESTON | 2014-07-07 | yes | yes |
| 574-702 | AT&T | LOGANSPORT | – | yes | yes |
| 574-703 | AT&T | SOUTH BEND | 2013-11-05 | yes | yes |
| 574-704 | Lumen | PLYMOUTH | 2013-11-14 | yes | yes |
| 574-707 | T-Mobile | OSCEOLA | 2001-01-04 | yes | yes |
| 574-709 | T-Mobile | LOGANSPORT | – | yes | yes |
| 574-710 | Charter | SOUTH BEND | 2019-09-17 | yes | yes |
| 574-721 | AT&T | LOGANSPORT | – | – | yes |
| 574-722 | Frontier | LOGANSPORT | – | – | yes |
| 574-725 | Frontier | LOGANSPORT | – | yes | yes |
| 574-727 | AT&T | LOGANSPORT | – | yes | yes |
| 574-732 | Frontier | LOGANSPORT | – | yes | yes |
| 574-735 | Frontier | LOGANSPORT | – | yes | yes |
| 574-737 | Frontier | LOGANSPORT | – | yes | yes |
| 574-739 | Frontier | LOGANSPORT | – | yes | yes |
| 574-742 | AT&T | OSCEOLA | 2006-01-12 | yes | yes |
| 574-746 | TON80 COMMUNICATIONS, LLC | DUNLAP | 2022-01-13 | yes | yes |
| 574-747 | AT&T | ELKHART | 2008-11-05 | yes | yes |
| 574-753 | Frontier | LOGANSPORT | – | – | yes |
| 574-758 | FRACTEL, LLC | WALTON | 2020-10-08 | yes | yes |
| 574-764 | TON80 COMMUNICATIONS, LLC | BURKET | 2022-01-13 | yes | yes |
| 574-766 | FRACTEL, LLC | CLAYPOOL | 2020-04-29 | yes | yes |
| 574-767 | T-Mobile | PLYMOUTH | 2006-09-11 | yes | yes |
| 574-768 | TON80 COMMUNICATIONS, LLC | ELKHART | 2022-02-23 | yes | yes |
| 574-772 | Brightspeed | KNOX | – | – | yes |
| 574-773 | Brightspeed | NAPPANEE | – | yes | yes |
| 574-774 | Dish | GOSHEN | 2026-05-19 | yes | yes |
| 574-777 | Onvoy | OSCEOLA | 2017-08-31 | yes | yes |
| 574-780 | Verizon | PLYMOUTH | – | – | yes |
| 574-783 | TON80 COMMUNICATIONS, LLC | LUCERNE | 2022-01-13 | yes | yes |
| 574-784 | Brightspeed | LAPAZ | – | yes | yes |
| 574-786 | FRACTEL, LLC | ELKHART | 2021-05-20 | yes | yes |
| 574-797 | Lumen | NEWCARLISL | 2005-02-15 | yes | yes |
| 574-800 | Onvoy | SOUTH BEND | 2017-09-29 | yes | yes |
| 574-804 | MCC TELEPHONY OF THE MID-WEST, LLC - IN | NO LIBERTY | 2006-03-20 | yes | yes |
| 574-806 | AT&T | KNOX | – | yes | yes |
| 574-807 | Lumen | SOUTH BEND | – | yes | yes |
| 574-808 | T-Mobile | MONTICELLO | 2004-11-04 | yes | yes |
| 574-817 | AT&T | KEWANNA | – | yes | yes |
| 574-821 | Twilio | MIDDLEBURY | – | yes | yes |
| 574-822 | Windstream | MIDDLEBURY | – | yes | yes |
| 574-825 | Frontier | MIDDLEBURY | – | – | yes |
| 574-826 | Brightspeed | BURNETTSVL | – | yes | yes |
| 574-830 | Windstream | DUNLAP | – | yes | yes |
| 574-831 | NEW PARIS TEL., INC. | NEW PARIS | – | – | yes |
| 574-832 | NEW PARIS TEL., INC. | NEW PARIS | – | – | yes |
| 574-834 | Brightspeed | NO WEBSTER | – | yes | yes |
| 574-835 | AT&T | ROCHESTER | – | yes | yes |
| 574-842 | AT&T | CULVER | – | yes | yes |
| 574-847 | T-Mobile | ROCHESTER | – | yes | yes |
| 574-848 | Frontier | BRISTOL | – | yes | yes |
| 574-849 | Verizon | ELKHART | – | – | yes |
| 574-850 | Verizon | SOUTH BEND | – | – | yes |
| 574-855 | AT&T | SOUTH BEND | 2006-02-06 | yes | yes |
| 574-857 | Frontier | FULTON | – | yes | yes |
| 574-858 | Frontier | ATWOOD | – | yes | yes |
| 574-859 | CAMDEN TEL. CO., INC. | DEER CREEK | – | yes | yes |
| 574-862 | Frontier | WAKARUSA | – | yes | yes |
| 574-867 | Brightspeed | HAMLET | – | – | yes |
| 574-870 | Verizon | MONTICELLO | 2002-01-10 | – | yes |
| 574-875 | Frontier | DUNLAP | – | yes | yes |
| 574-876 | T-Mobile | SOUTH BEND | – | yes | yes |
| 574-878 | Lumen | NO WEBSTER | 2006-03-03 | yes | yes |
| 574-888 | TERRA NOVA TELECOM INC. | SOUTH BEND | 2018-12-21 | yes | yes |
| 574-889 | Frontier | LUCERNE | – | yes | yes |
| 574-891 | Frontier | DUNLAP | – | yes | yes |
| 574-892 | Brightspeed | ARGOS | – | yes | yes |
| 574-893 | Frontier | AKRON | – | yes | yes |
| 574-895 | Twilio | SOUTH BEND | 2021-12-07 | yes | yes |
| 574-896 | Brightspeed | NO JUDSON | – | yes | yes |
| 574-900 | FRACTEL, LLC | WAKARUSA | 2019-01-25 | yes | yes |
| 574-901 | Charter | LOGANSPORT | 2021-11-22 | yes | yes |
| 574-903 | T-Mobile | GOSHEN | 2001-01-04 | yes | yes |
| 574-904 | T-Mobile | SOUTH BEND | 2002-01-10 | yes | yes |
| 574-907 | Lumen | MILLWOOD | 2002-05-10 | yes | yes |
| 574-910 | AT&T | WALKERTON | – | yes | yes |
| 574-913 | INDIANA PAGING NETWORK, INC. | PLYMOUTH | – | – | yes |
| 574-914 | Lumen | PLYMOUTH | 2002-05-13 | yes | yes |
| 574-930 | T-Mobile | PLYMOUTH | – | yes | yes |
| 574-931 | T-Mobile | SOUTH BEND | – | yes | yes |
| 574-933 | COMMUNICATIONS VENTURE CORP DBA INDIGITAL TELECOM | PLYMOUTH | 2005-01-27 | yes | yes |
| 574-935 | Brightspeed | PLYMOUTH | – | – | yes |
| 574-936 | Brightspeed | PLYMOUTH | – | – | yes |
| 574-941 | Brightspeed | PLYMOUTH | – | yes | yes |
| 574-943 | Frontier | IDAVILLE | – | yes | yes |
| 574-944 | FRACTEL, LLC | TWELVEMILE | 2020-10-08 | yes | yes |
| 574-946 | Brightspeed | WINAMAC | – | yes | yes |
| 574-948 | Brightspeed | PLYMOUTH | – | yes | yes |
| 574-952 | AT&T | ARGOS | – | – | yes |
| 574-965 | YEOMAN TEL. CO., INC. | YEOMAN | – | – | yes |
| 574-966 | Windstream | BRISTOL | – | yes | yes |
| 574-967 | Brightspeed | FLORA | – | – | yes |
| 574-968 | Windstream | SOUTH BEND | – | – | yes |
| 574-970 | Windstream | ELKHART | – | – | yes |
| 574-971 | T-Mobile | GOSHEN | 2002-04-30 | yes | yes |
| 574-975 | Windstream | GOSHEN | 2001-12-10 | – | yes |
| 574-977 | FRACTEL, LLC | WYATT | 2020-09-11 | yes | yes |
| 574-988 | Comcast | NEWCARLISL | 2005-08-31 | yes | yes |
| 574-990 | INTRADO COMMUNICATIONS, LLC | SOUTH BEND | 2002-06-18 | yes | yes |
| 574-992 | Comcast | LOGANSPORT | 2006-01-25 | yes | yes |
| 574-993 | AT&T | SOUTH BEND | – | – | yes |
| 574-999 | Onvoy | SOUTH BEND | 2017-02-10 | yes | yes |
Frequently asked
How many prefixes does area code 574 have?
403 NXX blocks are assigned of 786 possible. Each block is 10,000 consecutive numbers, so the code currently covers about 4,030 thousand-number ranges across 59 rate centers.
What do the first three digits after 574 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 574 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 574 table?
That the block is in thousands-block pooling: carriers draw 1,000-number lots from it instead of taking all 10,000. 301 of 574'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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