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
Sep 2026
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 210-406 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SANANTONIO | TX | |
| 210-408 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-410 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-411 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 210-413 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-414 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-415 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-416 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-421 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-422 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-424 | PAETEC ITEL, LLC | 829J | SANANTONIO | TX | |
| 210-431 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-432 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-433 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-434 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-435 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-436 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-437 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-438 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-442 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-443 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-444 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-445 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-446 | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | SANANTONIO | TX | |
| 210-447 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SANANTONIO | TX | |
| 210-448 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SANANTONIO | TX | |
| 210-452 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SANANTONIO | TX | |
| 210-453 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SANANTONIO | TX | |
| 210-455 | TWC IP ENABLED SERVICES, LLC | 793K | SANANTONIO | TX | |
| 210-456 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-457 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SANANTONIO | TX | |
| 210-458 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-462 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-463 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-465 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-467 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-470 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-471 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-472 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-473 | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX | |
| 210-474 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-475 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-476 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-477 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 8434 | SANANTONIO | TX | |
| 210-478 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-479 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-481 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-482 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-483 | SOUTHWESTERN BELL | 9533 | SANANTONIO | TX | |
| 210-484 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | 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.