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
Aug 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 209-491 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-492 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-495 | METROPCS, INC. | 5562 | MODESTO | CA | |
| 209-498 | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SANANDREAS | CA | |
| 209-500 | ONVOY, LLC - CA | 649C | MERCED | CA | |
| 209-508 | TERRA NOVA TELECOM INC. | 145J | ANGELSCAMP | CA | |
| 209-509 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LOS BANOS | CA | |
| 209-511 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CA | |
| 209-513 | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | STOCKTON | CA | |
| 209-514 | AMERICAN MESSAGING SERVICES, LLC | 9748 | MERCED | CA | |
| 209-516 | AMERICAN MESSAGING SERVICES, LLC | 9748 | LOS BANOS | CA | |
| 209-518 | T-MOBILE USA, INC. | 6529 | STOCKTON | CA | |
| 209-520 | AMERICAN MESSAGING SERVICES, LLC | 9748 | MODESTO | CA | |
| 209-521 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-522 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-523 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-524 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-525 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-526 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-527 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-528 | ONVOY, LLC - CA | 649C | WTFR DNPR | CA | |
| 209-529 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-530 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-531 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-532 | PACIFIC BELL | 9740 | SNRA MAIN | CA | |
| 209-533 | PACIFIC BELL | 9740 | SNRA MAIN | CA | |
| 209-535 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TURLOCK | CA | |
| 209-536 | PACIFIC BELL | 9740 | SNRA MAIN | CA | |
| 209-537 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-538 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-541 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-543 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-544 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-545 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-546 | PACIFIC BELL | 9740 | STOCKTON | CA | |
| 209-547 | PACIFIC BELL | 9740 | STOCKTON | CA | |
| 209-548 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-549 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-550 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-551 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-552 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-553 | ONVOY, LLC - CA | 649C | THORNTON | CA | |
| 209-554 | ONVOY, LLC - CA | 649C | MODESTO | CA | |
| 209-555 | MULTIPLE OCN LISTING | MULT | DIR ASST | CA | |
| 209-556 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-557 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-558 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-560 | ONVOY, LLC - CA | 649C | SUTTER CRK | CA | |
| 209-563 | FRONTIER CALIFORNIA INC. | 4420 | SNELLING | CA | |
| 209-564 | T-MOBILE USA, INC. | 6529 | MERCED | CA |
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.