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
Jul 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 209-567 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-569 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-571 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-572 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-573 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-574 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-575 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-576 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-577 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-578 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-579 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-580 | COMCAST PHONE OF CALIFORNIA, LLC | 394L | MERCED | CA | |
| 209-581 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-583 | ONVOY, LLC - CA | 649C | WALLACE | CA | |
| 209-584 | ONVOY, LLC - CA | 649C | VALLEY SPG | CA | |
| 209-585 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TURLOCK | CA | |
| 209-586 | PACIFIC BELL | 9740 | SNRA JUNO | CA | |
| 209-587 | METROPCS, INC. | 5562 | LOS BANOS | CA | |
| 209-588 | PACIFIC BELL | 9740 | SNRA MAIN | CA | |
| 209-590 | HD CARRIER LLC | 321J | SNELLING | CA | |
| 209-591 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNRA MAIN | CA | |
| 209-593 | ONVOY, LLC - CA | 649C | MODESTO | CA | |
| 209-595 | METROPCS, INC. | 5562 | MODESTO | CA | |
| 209-598 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | STOCKTON | CA | |
| 209-599 | FRONTIER CALIFORNIA INC. | 4420 | RIPON | CA | |
| 209-600 | ONVOY, LLC - CA | 649C | MERCED | CA | |
| 209-601 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MANTECA | CA | |
| 209-602 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MODESTO | CA | |
| 209-603 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MANTECA | CA | |
| 209-604 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MODESTO | CA | |
| 209-605 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MODESTO | CA | |
| 209-606 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MODESTO | CA | |
| 209-607 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MANTECA | CA | |
| 209-608 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MANTECA | CA | |
| 209-609 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MANTECA | CA | |
| 209-610 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MANTECA | CA | |
| 209-611 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CA | |
| 209-612 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MANTECA | CA | |
| 209-613 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MODESTO | CA | |
| 209-614 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MODESTO | CA | |
| 209-615 | AMERICAN MESSAGING SERVICES, LLC | 9748 | STOCKTON | CA | |
| 209-616 | ONVOY SPECTRUM, LLC | 624H | STOCKTON | CA | |
| 209-617 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MERCED | CA | |
| 209-620 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TURLOCK | CA | |
| 209-622 | BANDWIDTH.COM CLEC, LLC - CA | 981E | MODESTO | CA | |
| 209-623 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | STOCKTON | CA | |
| 209-624 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MANTECA | CA | |
| 209-625 | IP HORIZON LLC | 515J | LODI | CA | |
| 209-626 | IP HORIZON LLC | 515J | MERCED | CA | |
| 209-627 | IP HORIZON LLC | 515J | TRACY | 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.