NumberResearchRecent thousands-block assignments
1 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 323
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 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 |
|---|---|---|---|---|---|---|---|
| 2017-07-19 | 323-579-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2017-07-19 | 323-918-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 08 | CA |
| 2017-07-19 | 323-918-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 08 | CA |
| 2017-07-17 | 323-579-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 02 | CA |
| 2017-07-17 | 323-689-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 08 | CA |
| 2017-07-11 | 323-689-8XXX | 8000–8999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | LSAN DA 08 | CA |
| 2017-07-03 | 323-840-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LSAN DA 11 | CA |
| 2017-06-28 | 323-408-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | LSAN DA 14 | CA |
| 2017-06-28 | 323-805-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2017-06-27 | 323-818-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | LSAN DA 03 | CA |
| 2017-06-27 | 323-853-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2017-06-27 | 323-853-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2017-06-27 | 323-853-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2017-06-27 | 323-968-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 05 | CA |
| 2017-06-23 | 323-408-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | LSAN DA 14 | CA |
| 2017-06-22 | 323-797-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | MONTEBELLO | CA |
| 2017-06-22 | 323-831-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 05 | CA |
| 2017-06-22 | 323-831-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 05 | CA |
| 2017-06-21 | 323-579-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | LSAN DA 02 | CA |
| 2017-06-21 | 323-801-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | LSAN DA 13 | CA |
| 2017-06-15 | 323-408-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | LSAN DA 14 | CA |
| 2017-06-15 | 323-579-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | LSAN DA 02 | CA |
| 2017-06-13 | 323-579-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2017-06-13 | 323-880-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | LSAN DA 09 | CA |
| 2017-06-13 | 323-917-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | LSAN DA 13 | CA |
| 2017-05-22 | 323-218-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | LSAN DA 13 | CA |
| 2017-05-22 | 323-328-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | LSAN DA 11 | CA |
| 2017-05-22 | 323-329-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | LSAN DA 12 | CA |
| 2017-05-22 | 323-408-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2017-05-22 | 323-408-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2017-05-22 | 323-689-7XXX | 7000–7999 | Assigned | TELNYX LLC | 073H | LSAN DA 08 | CA |
| 2017-05-22 | 323-831-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | LSAN DA 05 | CA |
| 2017-05-22 | 323-880-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | LSAN DA 09 | CA |
| 2017-05-16 | 323-289-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | LSAN DA 12 | CA |
| 2017-05-16 | 323-379-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | LSAN DA 04 | CA |
| 2017-05-16 | 323-689-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | LSAN DA 08 | CA |
| 2017-05-16 | 323-690-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | LSAN DA 11 | CA |
| 2017-05-16 | 323-999-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | LSAN DA 03 | CA |
| 2017-05-15 | 323-797-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | MONTEBELLO | CA |
| 2017-05-12 | 323-917-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | LSAN DA 13 | CA |
| 2017-05-02 | 323-880-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 09 | CA |
| 2017-05-02 | 323-917-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 13 | CA |
| 2017-05-01 | 323-925-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 03 | CA |
| 2017-05-01 | 323-986-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 04 | CA |
| 2017-04-18 | 323-996-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 06 | CA |
| 2017-04-12 | 323-880-8XXX | 8000–8999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LSAN DA 09 | CA |
| 2017-04-12 | 323-996-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LSAN DA 06 | CA |
| 2017-04-07 | 323-880-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 09 | CA |
| 2017-04-04 | 323-321-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 09 | CA |
| 2017-04-04 | 323-776-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 09 | 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.