NumberResearchRecent prefix assignments
371 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.
Most active assignees, last 30 days
New assignments by month
Sep 2026
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 214-245 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 214-246 | SPOK, INC. | 6630 | GRANDPRARI | TX | |
| 214-248 | SPOK, INC. | 6630 | GRANDPRARI | TX | |
| 214-251 | BANDWIDTH.COM CLEC, LLC - TX | 004F | DALLAS | TX | |
| 214-252 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-253 | BANDWIDTH.COM CLEC, LLC - TX | 004F | DALLAS | TX | |
| 214-254 | METROPCS, INC. | 5562 | DALLAS | TX | |
| 214-255 | TELETOUCH COMMUNICATIONS, INC. | 6591 | GRANDPRARI | TX | |
| 214-256 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-257 | AT&T - LOCAL | 7421 | DALLAS | TX | |
| 214-258 | AT&T - LOCAL | 7421 | DALLAS | TX | |
| 214-259 | AT&T - LOCAL | 7421 | DALLAS | TX | |
| 214-260 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | IRVING | TX | |
| 214-261 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 214-262 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 0701 | DALLAS | TX | |
| 214-265 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-266 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-267 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-268 | SOUTHWESTERN BELL | 9533 | GRANDPRARI | TX | |
| 214-269 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | DALLAS | TX | |
| 214-270 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | DALLAS | TX | |
| 214-271 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | DALLAS | TX | |
| 214-273 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 214-274 | METROPCS, INC. | 5562 | GRANDPRARI | TX | |
| 214-275 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-276 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7516 | DALLAS | TX | |
| 214-277 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | IRVING | TX | |
| 214-278 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7516 | GRANDPRARI | TX | |
| 214-280 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-281 | METROPCS, INC. | 5562 | DALLAS | TX | |
| 214-282 | METROPCS, INC. | 5562 | GRANDPRARI | TX | |
| 214-283 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 214-284 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-285 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | LEWISVILLE | TX | |
| 214-286 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-287 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | GRANDPRARI | TX | |
| 214-288 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | GRANDPRARI | TX | |
| 214-289 | METROPCS, INC. | 5562 | GRANDPRARI | TX | |
| 214-290 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-291 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PLANO | TX | |
| 214-292 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 214-293 | METROPCS, INC. | 5562 | GRANDPRARI | TX | |
| 214-294 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7516 | DALLAS | TX | |
| 214-295 | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | DALLAS | TX | |
| 214-297 | ONVOY, LLC - TX | 903C | FRISCO | TX | |
| 214-299 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | PLANO | TX | |
| 214-300 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | IRVING | TX | |
| 214-302 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-303 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-306 | SOUTHWESTERN BELL | 9533 | DALLAS | TX |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.