NumberResearchRecent prefix assignments
352 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
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 210-487 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-488 | ONVOY, LLC - TX | 903C | SANANTONIO | TX | |
| 210-489 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-490 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-491 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-492 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-493 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-494 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-495 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-496 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-497 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-498 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-499 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-502 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-504 | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | SANANTONIO | TX | |
| 210-506 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-507 | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | SANANTONIO | TX | |
| 210-508 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-509 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-511 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 210-513 | SPOK, INC. | 6630 | SANANTONIO | TX | |
| 210-514 | ONVOY, LLC - TX | 903C | SANANTONIO | TX | |
| 210-515 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SANANTONIO | TX | |
| 210-516 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SANANTONIO | TX | |
| 210-518 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-520 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-521 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-522 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-523 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-524 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-525 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-527 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-528 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-530 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-531 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-532 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-533 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-534 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-535 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-536 | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7138 | SANANTONIO | TX | |
| 210-538 | PAETEC ITEL, LLC | 829J | SANANTONIO | TX | |
| 210-541 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-543 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-545 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-546 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 8434 | SANANTONIO | TX | |
| 210-547 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | SANANTONIO | TX | |
| 210-553 | SPOK, INC. | 6630 | SANANTONIO | TX | |
| 210-554 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-555 | MULTIPLE OCN LISTING | MULT | DIR ASST | TX | |
| 210-558 | SOUTHWESTERN BELL | 9533 | SANANTONIO | 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.