NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, all time — NPA 310
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2008-07-17 | 310-363-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | HAWTHORNE | CA |
| 2008-07-17 | 310-775-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | W ANGELES | CA |
| 2008-06-27 | 310-437-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SNMN MRVS | CA |
| 2008-05-30 | 310-425-8XXX | 8000–8999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | CULVERCITY | CA |
| 2008-05-23 | 310-310-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SNMN SNMN | CA |
| 2008-04-21 | 310-746-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | BEVERLYHLS | CA |
| 2008-03-27 | 310-684-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SAN PEDRO | CA |
| 2008-03-27 | 310-872-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SAN PEDRO | CA |
| 2008-03-14 | 310-982-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | SAN PEDRO | CA |
| 2008-02-22 | 310-745-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNMN MRVS | CA |
| 2008-02-22 | 310-751-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNMN MRVS | CA |
| 2008-02-15 | 310-272-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | BEVERLYHLS | CA |
| 2008-02-13 | 310-868-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CMTN CMTN | CA |
| 2008-02-08 | 310-272-7XXX | 7000–7999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | BEVERLYHLS | CA |
| 2008-02-08 | 310-684-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SAN PEDRO | CA |
| 2008-02-08 | 310-740-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN MRVS | CA |
| 2008-02-04 | 310-776-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN MRVS | CA |
| 2008-02-01 | 310-341-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | EL SEGUNDO | CA |
| 2008-01-30 | 310-272-1XXX | 1000–1999 | Assigned | PACIFIC BELL | 9740 | BEVERLYHLS | CA |
| 2008-01-17 | 310-954-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | W ANGELES | CA |
| 2007-12-20 | 310-272-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | BEVERLYHLS | CA |
| 2007-12-20 | 310-310-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SNMN SNMN | CA |
| 2007-12-20 | 310-310-8XXX | 8000–8999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SNMN SNMN | CA |
| 2007-12-13 | 310-773-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNMN MRVS | CA |
| 2007-10-31 | 310-741-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | SNMN MRVS | CA |
| 2007-10-17 | 310-751-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN MRVS | CA |
| 2007-10-05 | 310-773-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNMN MRVS | CA |
| 2007-10-01 | 310-302-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNMN MRVS | CA |
| 2007-09-26 | 310-751-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN MRVS | CA |
| 2007-09-18 | 310-330-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | INGLEWOOD | CA |
| 2007-09-12 | 310-310-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNMN SNMN | CA |
| 2007-09-04 | 310-295-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | W ANGELES | CA |
| 2007-08-20 | 310-684-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SAN PEDRO | CA |
| 2007-08-15 | 310-248-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2007-07-02 | 310-734-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2007-07-02 | 310-855-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2007-06-29 | 310-424-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | BEVERLYHLS | CA |
| 2007-06-15 | 310-978-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | HAWTHORNE | CA |
| 2007-06-08 | 310-310-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNMN SNMN | CA |
| 2007-04-23 | 310-978-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | HAWTHORNE | CA |
| 2007-04-13 | 310-310-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SNMN SNMN | CA |
| 2007-04-13 | 310-310-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SNMN SNMN | CA |
| 2007-02-22 | 310-321-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | EL SEGUNDO | CA |
| 2007-02-13 | 310-616-0XXX | 0000–0999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | EL SEGUNDO | CA |
| 2007-02-12 | 310-426-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EL SEGUNDO | CA |
| 2007-02-12 | 310-647-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EL SEGUNDO | CA |
| 2007-02-12 | 310-648-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EL SEGUNDO | CA |
| 2007-02-09 | 310-658-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | EL SEGUNDO | CA |
| 2007-02-06 | 310-356-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | EL SEGUNDO | CA |
| 2007-01-18 | 310-754-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNMN MRVS | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.