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 |
|---|---|---|---|---|---|
| 214-309 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-311 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 214-312 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-313 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7516 | DALLAS | TX | |
| 214-314 | AMERICAN MESSAGING SERVICES, LLC | 9748 | GRANDPRARI | TX | |
| 214-315 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-316 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | GRANDPRARI | TX | |
| 214-317 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | GRANDPRARI | TX | |
| 214-318 | AMERICAN MESSAGING SERVICES, LLC | 9748 | GRANDPRARI | TX | |
| 214-319 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-320 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-321 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-322 | SPOK, INC. | 6630 | GRANDPRARI | TX | |
| 214-323 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | DALLAS | TX | |
| 214-324 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-325 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-327 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-328 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-329 | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | DALLAS | TX | |
| 214-330 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-331 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-332 | AMERICAN MESSAGING SERVICES, LLC | 9748 | GRANDPRARI | TX | |
| 214-333 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-334 | METROPCS, INC. | 5562 | GRANDPRARI | TX | |
| 214-335 | METROPCS, INC. | 5562 | GRANDPRARI | TX | |
| 214-336 | METROPCS, INC. | 5562 | GRANDPRARI | TX | |
| 214-337 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-338 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | PROSPER | TX | |
| 214-339 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-340 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-341 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-342 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-343 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-344 | SPOK, INC. | 6630 | GRANDPRARI | TX | |
| 214-345 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-346 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-347 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 214-348 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-349 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-350 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-351 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-352 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-353 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-354 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-355 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-356 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-357 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-358 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-359 | SPOK, INC. | 6630 | GRANDPRARI | TX | |
| 214-360 | 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.