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 |
|---|---|---|---|---|---|---|---|
| 2006-01-18 | 310-341-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | EL SEGUNDO | CA |
| 2006-01-18 | 310-526-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN SNMN | CA |
| 2006-01-18 | 310-648-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | EL SEGUNDO | CA |
| 2006-01-18 | 310-667-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CMTN CMTN | CA |
| 2006-01-18 | 310-667-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CMTN CMTN | CA |
| 2006-01-18 | 310-667-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CMTN CMTN | CA |
| 2006-01-18 | 310-684-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2006-01-18 | 310-684-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2006-01-18 | 310-684-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2006-01-18 | 310-684-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2006-01-18 | 310-735-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CMTN CMTN | CA |
| 2006-01-18 | 310-735-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CMTN CMTN | CA |
| 2006-01-18 | 310-894-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CMTN CMTN | CA |
| 2006-01-18 | 310-900-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CMTN CMTN | CA |
| 2006-01-15 | 310-774-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MALIBU | CA |
| 2006-01-11 | 310-265-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | REDONDO | CA |
| 2006-01-11 | 310-425-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CULVERCITY | CA |
| 2006-01-11 | 310-658-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EL SEGUNDO | CA |
| 2006-01-11 | 310-658-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EL SEGUNDO | CA |
| 2006-01-11 | 310-800-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CMTN GRDN | CA |
| 2006-01-09 | 310-227-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | EL SEGUNDO | CA |
| 2006-01-09 | 310-227-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | EL SEGUNDO | CA |
| 2006-01-09 | 310-227-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | EL SEGUNDO | CA |
| 2006-01-09 | 310-697-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | REDONDO | CA |
| 2006-01-09 | 310-697-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | REDONDO | CA |
| 2006-01-09 | 310-775-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | W ANGELES | CA |
| 2006-01-09 | 310-775-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | W ANGELES | CA |
| 2006-01-04 | 310-775-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | W ANGELES | CA |
| 2006-01-04 | 310-775-4XXX | 4000–4999 | Assigned | PACIFIC BELL (COMPETITIVE) | 7480 | W ANGELES | CA |
| 2006-01-03 | 310-728-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BEVERLYHLS | CA |
| 2006-01-03 | 310-855-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BEVERLYHLS | CA |
| 2005-12-29 | 310-341-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | EL SEGUNDO | CA |
| 2005-12-27 | 310-353-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2005-12-27 | 310-715-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CMTN GRDN | CA |
| 2005-12-27 | 310-967-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2005-12-21 | 310-294-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | TORRANCE | CA |
| 2005-12-21 | 310-439-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN MRVS | CA |
| 2005-12-21 | 310-439-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN MRVS | CA |
| 2005-12-21 | 310-773-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNMN MRVS | CA |
| 2005-12-21 | 310-862-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNMN MRVS | CA |
| 2005-12-20 | 310-294-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TORRANCE | CA |
| 2005-12-20 | 310-295-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | W ANGELES | CA |
| 2005-12-15 | 310-318-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | REDONDO | CA |
| 2005-12-14 | 310-988-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | INGLEWOOD | CA |
| 2005-12-14 | 310-988-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | INGLEWOOD | CA |
| 2005-12-05 | 310-295-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | W ANGELES | CA |
| 2005-12-05 | 310-987-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2005-12-01 | 310-988-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | INGLEWOOD | CA |
| 2005-11-23 | 310-756-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CMTN GRDN | CA |
| 2005-11-23 | 310-756-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CMTN GRDN | 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.