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
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 213-248 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LSAN DA 01 | CA | |
| 213-249 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-250 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-251 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-252 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-253 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-254 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LSAN DA 01 | CA | |
| 213-255 | T-MOBILE USA, INC. | 6529 | LSAN DA 07 | CA | |
| 213-258 | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA | |
| 213-259 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 07 | CA | |
| 213-260 | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 10 | CA | |
| 213-265 | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA | |
| 213-266 | AT&T ENTERPRISES, LLC | 516C | LSAN DA 01 | CA | |
| 213-270 | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | LSAN DA 01 | CA | |
| 213-271 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 01 | CA | |
| 213-273 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-274 | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA | |
| 213-275 | ONVOY, LLC - CA | 649C | LSAN DA 07 | CA | |
| 213-276 | METROPCS NETWORKS, LLC | 899D | LSAN DA 01 | CA | |
| 213-278 | METROPCS NETWORKS, LLC | 899D | LSAN DA 01 | CA | |
| 213-284 | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | LSAN DA 07 | CA | |
| 213-285 | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 01 | CA | |
| 213-286 | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 01 | CA | |
| 213-287 | SPOK, INC. | 6630 | LSAN DA 01 | CA | |
| 213-291 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LSAN DA 01 | CA | |
| 213-292 | ONVOY, LLC - CA | 649C | LSAN DA 01 | CA | |
| 213-295 | ONVOY, LLC - CA | 649C | LSAN DA 07 | CA | |
| 213-298 | ONVOY, LLC - CA | 649C | LSAN DA 01 | CA | |
| 213-299 | AMERICAN MESSAGING SERVICES, LLC | 6906 | LSAN DA 07 | CA | |
| 213-303 | SPOK, INC. | 6630 | LSAN DA 01 | CA | |
| 213-305 | METROPCS NETWORKS, LLC | 899D | LSAN DA 01 | CA | |
| 213-307 | AMERICAN MESSAGING SERVICES, LLC | 9748 | LSAN DA 01 | CA | |
| 213-311 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CA | |
| 213-312 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-316 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 01 | CA | |
| 213-317 | FIVE9, INC. | 598J | LSAN DA 01 | CA | |
| 213-321 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LSAN DA 01 | CA | |
| 213-323 | CA | ||||
| 213-324 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CMTN GRDN | CA | |
| 213-325 | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | LSAN DA 01 | CA | |
| 213-327 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-333 | 33 WIRELESS INC. | 6967 | LSAN DA 01 | CA | |
| 213-336 | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 10 | CA | |
| 213-338 | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | LSAN DA 02 | CA | |
| 213-339 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-341 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LSAN DA 10 | CA | |
| 213-342 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 07 | CA | |
| 213-344 | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA | |
| 213-345 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-346 | PACIFIC BELL | 9740 | LSAN DA 01 | 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.