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
Aug 2026
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Dec 2025
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 213-973 | ONVOY, LLC - CA | 649C | LSAN DA 07 | CA | |
| 213-974 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-975 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-977 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-978 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-985 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LSAN DA 10 | CA | |
| 213-988 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-989 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-990 | SPOK, INC. | 6630 | LSAN DA 01 | CA | |
| 213-992 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LSAN DA 07 | CA | |
| 213-995 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LSAN DA 01 | CA | |
| 213-996 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-999 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LSAN DA 01 | CA | |
| 214-200 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-201 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7516 | GRANDPRARI | TX | |
| 214-202 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-203 | ONVOY, LLC - TX | 903C | CEDAR HILL | TX | |
| 214-204 | ONVOY, LLC - TX | 903C | GRANDPRARI | TX | |
| 214-206 | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | DALLAS | TX | |
| 214-207 | METROPCS, INC. | 5562 | GRANDPRARI | TX | |
| 214-209 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 214-210 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 214-211 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 214-212 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-213 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-214 | ONVOY, LLC - TX | 903C | DALLAS | TX | |
| 214-215 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-216 | ONVOY, LLC - TX | 903C | DE SOTO | TX | |
| 214-217 | ONVOY, LLC - TX | 903C | DALLAS | TX | |
| 214-219 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-220 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-221 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-222 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | LEWISVILLE | TX | |
| 214-224 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-225 | ONVOY, LLC - TX | 903C | GRANDPRARI | TX | |
| 214-226 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | IRVING | TX | |
| 214-227 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | PLANO | TX | |
| 214-228 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-229 | METROPCS, INC. | 5562 | DALLAS | TX | |
| 214-231 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 214-232 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-233 | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | DLFTWTARPT | TX | |
| 214-236 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-237 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 214-239 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-240 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-241 | T-MOBILE USA, INC. | 6529 | ENNIS | TX | |
| 214-242 | CSC VOICE, LLC | 612K | DALLAS | TX | |
| 214-243 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-244 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX |
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.