NumberResearchRecent prefix assignments
371 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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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Dec 2025
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 949-246 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | IRVINE | CA | |
| 949-248 | PACIFIC BELL | 9740 | CAPITRNVLY | CA | |
| 949-249 | PACIFIC BELL | 9740 | CAPITRNVLY | CA | |
| 949-250 | PACIFIC BELL | 9740 | IRVINE | CA | |
| 949-251 | PACIFIC BELL | 9740 | IRVINE | CA | |
| 949-252 | PACIFIC BELL | 9740 | IRVINE | CA | |
| 949-253 | PACIFIC BELL | 9740 | IRVINE | CA | |
| 949-255 | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | IRVINE | CA | |
| 949-256 | 33 WIRELESS INC. | 6967 | SADLBK VLY | CA | |
| 949-257 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CAPITRNVLY | CA | |
| 949-258 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEWPORTBCH | CA | |
| 949-259 | BANDWIDTH.COM CLEC, LLC - CA | 981E | RNCHOVIEJO | CA | |
| 949-260 | PACIFIC BELL | 9740 | IRVINE | CA | |
| 949-261 | PACIFIC BELL | 9740 | IRVINE | CA | |
| 949-262 | PACIFIC BELL | 9740 | IRVINE | CA | |
| 949-263 | PACIFIC BELL | 9740 | IRVINE | CA | |
| 949-264 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TRABUCO | CA | |
| 949-265 | PAETEC ITEL, LLC | 829J | IRVINE | CA | |
| 949-266 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | 7379 | IRVINE | CA | |
| 949-267 | PAETEC ITEL, LLC | 829J | TRABUCO | CA | |
| 949-268 | PAETEC ITEL, LLC | 829J | SADLBK VLY | CA | |
| 949-269 | PAETEC ITEL, LLC | 829J | RNCHOVIEJO | CA | |
| 949-270 | PAETEC ITEL, LLC | 829J | NEWPORTBCH | CA | |
| 949-271 | PAETEC ITEL, LLC | 829J | IRVINE | CA | |
| 949-272 | PAETEC ITEL, LLC | 829J | CAPITRNVLY | CA | |
| 949-273 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SADLBK VLY | CA | |
| 949-274 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | NEWPORTBCH | CA | |
| 949-275 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | IRVINE | CA | |
| 949-276 | PACIFIC BELL | 9740 | CAPITRNVLY | CA | |
| 949-277 | UTILITY TELECOM GROUP, LLC - CA | 9262 | SADLBK VLY | CA | |
| 949-278 | T-MOBILE USA, INC. | 6529 | IRVINE | CA | |
| 949-279 | T-MOBILE USA, INC. | 6529 | IRVINE | CA | |
| 949-280 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LAGUNA BCH | CA | |
| 949-281 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | 7379 | LAGUNA BCH | CA | |
| 949-282 | PACIFIC BELL | 9740 | SADLBK VLY | CA | |
| 949-283 | T-MOBILE USA, INC. | 6529 | IRVINE | CA | |
| 949-284 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | RNCHOVIEJO | CA | |
| 949-285 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | IRVINE | CA | |
| 949-286 | PACIFIC BELL | 9740 | IRVINE | CA | |
| 949-287 | PACIFIC BELL | 9740 | NEWPORTBCH | CA | |
| 949-288 | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | TRABUCO | CA | |
| 949-289 | T-MOBILE USA, INC. | 6529 | CAPITRNVLY | CA | |
| 949-290 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LAGUNA BCH | CA | |
| 949-291 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CAPITRNVLY | CA | |
| 949-292 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RNCHOVIEJO | CA | |
| 949-293 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | IRVINE | CA | |
| 949-294 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | IRVINE | CA | |
| 949-296 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | IRVINE | CA | |
| 949-297 | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | SADLBK VLY | CA | |
| 949-298 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | TRABUCO | CA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.