NumberResearchRecent prefix assignments
380 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 2026-04
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 |
|---|---|---|---|---|---|
| 972-294 | SOUTHWESTERN BELL | 9533 | FRISCO | TX | |
| 972-295 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | PLANO | TX | |
| 972-296 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-297 | SPOK, INC. | 6630 | GRANDPRARI | TX | |
| 972-298 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-299 | SOUTHWESTERN BELL | 9533 | CEDAR HILL | TX | |
| 972-300 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | CARROLLTON | TX | |
| 972-301 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-302 | T-MOBILE USA, INC. | 6529 | MCKINNEY | TX | |
| 972-303 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | PLANO | TX | |
| 972-304 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | LEWISVILLE | TX | |
| 972-305 | TELETOUCH COMMUNICATIONS, INC. | 6591 | GRANDPRARI | TX | |
| 972-306 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | CARROLLTON | TX | |
| 972-307 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | CARROLLTON | TX | |
| 972-308 | AT&T ENTERPRISES, LLC | 516C | DALLAS | TX | |
| 972-309 | SOUTHWESTERN BELL TELEPHONE COMPANY - TX | 7726 | PLANO | TX | |
| 972-311 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 972-312 | SOUTHWESTERN BELL TELEPHONE COMPANY - TX | 7726 | PLANO | TX | |
| 972-313 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | IRVING | TX | |
| 972-314 | ONVOY, LLC - TX | 903C | GRANDPRARI | TX | |
| 972-315 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | LEWISVILLE | TX | |
| 972-316 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | LEWISVILLE | TX | |
| 972-317 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | LEWISVILLE | TX | |
| 972-318 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | LEWISVILLE | TX | |
| 972-319 | SPOK, INC. | 6630 | GRANDPRARI | TX | |
| 972-320 | SPOK, INC. | 6630 | GRANDPRARI | TX | |
| 972-321 | SPOK, INC. | 6630 | GRANDPRARI | TX | |
| 972-322 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 972-323 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | CARROLLTON | TX | |
| 972-326 | SPOK, INC. | 6630 | IRVING | TX | |
| 972-329 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-330 | ONVOY, LLC - TX | 903C | ENNIS | TX | |
| 972-331 | ONVOY, LLC - TX | 903C | DALLAS | TX | |
| 972-332 | AT&T - LOCAL | 7421 | ALLEN | TX | |
| 972-333 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 972-334 | SOUTHWESTERN BELL | 9533 | FRISCO | TX | |
| 972-335 | SOUTHWESTERN BELL | 9533 | FRISCO | TX | |
| 972-336 | SOUTHWESTERN BELL | 9533 | GRANDPRARI | TX | |
| 972-337 | SOUTHWESTERN BELL | 9533 | GRANDPRARI | TX | |
| 972-338 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-339 | SOUTHWESTERN BELL | 9533 | GRANDPRARI | TX | |
| 972-340 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-341 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-342 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 972-343 | SOUTHWESTERN BELL | 9533 | GRANDPRARI | TX | |
| 972-344 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-345 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 972-346 | SOUTHWESTERN BELL | 9533 | PROSPER | TX | |
| 972-347 | SOUTHWESTERN BELL | 9533 | PROSPER | TX | |
| 972-348 | SOUTHWESTERN BELL | 9533 | DALLAS | TX |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.