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
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| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 213-847 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-858 | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | LSAN DA 10 | CA | |
| 213-861 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-863 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LSAN DA 07 | CA | |
| 213-864 | METROPCS NETWORKS, LLC | 899D | LSAN DA 01 | CA | |
| 213-867 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LSAN DA 07 | CA | |
| 213-873 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 01 | CA | |
| 213-880 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LSAN DA 01 | CA | |
| 213-884 | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | LSAN DA 10 | CA | |
| 213-888 | UTILITY TELECOM GROUP, LLC - CA | 9262 | LSAN DA 10 | CA | |
| 213-891 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-892 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-893 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-894 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-895 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-896 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-897 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-899 | AMERICAN MESSAGING SERVICES, LLC | 9748 | LSAN DA 01 | CA | |
| 213-900 | ONVOY, LLC - CA | 649C | LSAN DA 10 | CA | |
| 213-901 | UTILITY TELECOM GROUP, LLC - CA | 9262 | LSAN DA 01 | CA | |
| 213-905 | T-MOBILE USA, INC. | 6529 | LSAN DA 07 | CA | |
| 213-908 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-909 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LSAN DA 10 | CA | |
| 213-911 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CA | |
| 213-915 | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | LSAN DA 10 | CA | |
| 213-918 | AMERICAN MESSAGING SERVICES, LLC | 6906 | LSAN DA 01 | CA | |
| 213-919 | SPOK, INC. | 6630 | LSAN DA 01 | CA | |
| 213-921 | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA | |
| 213-922 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-923 | METROPCS NETWORKS, LLC | 899D | LSAN DA 01 | CA | |
| 213-924 | METROPCS NETWORKS, LLC | 899D | LSAN DA 01 | CA | |
| 213-925 | METROPCS NETWORKS, LLC | 899D | LSAN DA 01 | CA | |
| 213-926 | METROPCS NETWORKS, LLC | 899D | LSAN DA 01 | CA | |
| 213-927 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LSAN DA 10 | CA | |
| 213-928 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-929 | ONVOY, LLC - CA | 649C | LSAN DA 01 | CA | |
| 213-943 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LSAN DA 01 | CA | |
| 213-944 | METROPCS NETWORKS, LLC | 899D | LSAN DA 01 | CA | |
| 213-947 | ONVOY, LLC - CA | 649C | LSAN DA 01 | CA | |
| 213-948 | METROPCS NETWORKS, LLC | 899D | LSAN DA 01 | CA | |
| 213-949 | METROPCS NETWORKS, LLC | 899D | LSAN DA 01 | CA | |
| 213-950 | CA | ||||
| 213-955 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-958 | CA | ||||
| 213-959 | CA | ||||
| 213-961 | SPOK, INC. | 6630 | LSAN DA 01 | CA | |
| 213-963 | SPOK, INC. | 6630 | LSAN DA 01 | CA | |
| 213-966 | UTILITY TELECOM GROUP, LLC - CA | 9262 | LSAN DA 07 | CA | |
| 213-968 | SPOK, INC. | 6630 | LSAN DA 01 | CA | |
| 213-972 | PACIFIC BELL | 9740 | LSAN DA 01 | 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.