NumberResearchRecent thousands-block assignments
2 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, last 30 days — NPA 562
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
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Jan 2026
Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-06-30 | 562-351-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | WHITTIER | CA |
| 2015-06-23 | 562-351-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WHITTIER | CA |
| 2015-06-22 | 562-655-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | PICORIVERA | CA |
| 2015-06-11 | 562-348-3XXX | 3000–3999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | NORWALK | CA |
| 2015-06-11 | 562-348-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | NORWALK | CA |
| 2015-06-11 | 562-583-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2015-06-11 | 562-583-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2015-06-11 | 562-583-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2015-06-11 | 562-583-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2015-06-11 | 562-583-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2015-06-11 | 562-583-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2015-06-08 | 562-330-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2015-05-21 | 562-348-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | NORWALK | CA |
| 2015-05-21 | 562-348-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | NORWALK | CA |
| 2015-05-21 | 562-348-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | NORWALK | CA |
| 2015-05-18 | 562-350-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | LONG BEACH | CA |
| 2015-05-18 | 562-350-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | LONG BEACH | CA |
| 2015-05-18 | 562-350-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | LONG BEACH | CA |
| 2015-05-18 | 562-350-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | LONG BEACH | CA |
| 2015-05-18 | 562-350-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LONG BEACH | CA |
| 2015-05-18 | 562-350-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LONG BEACH | CA |
| 2015-05-18 | 562-350-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LONG BEACH | CA |
| 2015-05-18 | 562-350-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LONG BEACH | CA |
| 2015-05-18 | 562-350-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LONG BEACH | CA |
| 2015-05-14 | 562-348-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | NORWALK | CA |
| 2015-05-13 | 562-548-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LONG BEACH | CA |
| 2015-05-11 | 562-640-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA HABRA | CA |
| 2015-05-04 | 562-385-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | DOWNEY | CA |
| 2015-05-04 | 562-385-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | DOWNEY | CA |
| 2015-05-04 | 562-385-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | DOWNEY | CA |
| 2015-04-27 | 562-385-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | DOWNEY | CA |
| 2015-04-27 | 562-385-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | DOWNEY | CA |
| 2015-04-27 | 562-385-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | DOWNEY | CA |
| 2015-04-27 | 562-385-9XXX | 9000–9999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | DOWNEY | CA |
| 2015-04-23 | 562-348-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | NORWALK | CA |
| 2015-04-22 | 562-351-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | WHITTIER | CA |
| 2015-04-22 | 562-641-9XXX | 9000–9999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | PICORIVERA | CA |
| 2015-04-20 | 562-850-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | LONG BEACH | CA |
| 2015-04-20 | 562-850-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | LONG BEACH | CA |
| 2015-04-20 | 562-850-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LONG BEACH | CA |
| 2015-04-20 | 562-850-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LONG BEACH | CA |
| 2015-04-20 | 562-850-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LONG BEACH | CA |
| 2015-04-20 | 562-850-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | LONG BEACH | CA |
| 2015-04-14 | 562-351-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | WHITTIER | CA |
| 2015-04-13 | 562-374-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2015-04-13 | 562-374-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2015-04-13 | 562-374-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2015-04-13 | 562-374-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2015-04-13 | 562-374-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2015-04-13 | 562-374-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ALAMITOS | 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.