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
Aug 2026
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 214-361 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-362 | SPOK, INC. | 6630 | GRANDPRARI | TX | |
| 214-363 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-364 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-365 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-366 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-367 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-368 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-369 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-370 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-371 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-372 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-373 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-374 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-375 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-376 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-378 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-379 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | DALLAS | TX | |
| 214-380 | ONVOY, LLC - TX | 903C | PLANO | TX | |
| 214-381 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-382 | ONVOY, LLC - TX | 903C | DALLAS | TX | |
| 214-384 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-386 | BANDWIDTH.COM CLEC, LLC - TX | 004F | MCKINNEY | TX | |
| 214-388 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-389 | ONVOY, LLC - TX | 903C | DALLAS | TX | |
| 214-390 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | CARROLLTON | TX | |
| 214-391 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-392 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-393 | ONVOY, LLC - TX | 903C | DALLAS | TX | |
| 214-394 | METROPCS, INC. | 5562 | GRANDPRARI | TX | |
| 214-395 | METROPCS, INC. | 5562 | GRANDPRARI | TX | |
| 214-397 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-398 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-400 | T-MOBILE USA, INC. | 6529 | MIDLOTHIAN | TX | |
| 214-401 | SPOK, INC. | 6630 | GRANDPRARI | TX | |
| 214-402 | METROPCS, INC. | 5562 | GRANDPRARI | TX | |
| 214-403 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-405 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-408 | AMERICAN MESSAGING SERVICES, LLC | 9748 | GRANDPRARI | TX | |
| 214-410 | AMERICAN MESSAGING SERVICES, LLC | 9748 | GRANDPRARI | TX | |
| 214-411 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 214-414 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 214-415 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-416 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 214-417 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-418 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-419 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | PLANO | TX | |
| 214-420 | ONVOY, LLC - TX | 903C | DALLAS | TX | |
| 214-421 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-423 | ONVOY, LLC - TX | 903C | FRISCO | 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.