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
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2007-03-28 | 323-399-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-03-28 | 323-434-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2007-03-28 | 323-434-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2007-03-28 | 323-434-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2007-03-28 | 323-434-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2007-03-28 | 323-434-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2007-03-28 | 323-434-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2007-03-28 | 323-434-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2007-03-28 | 323-434-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2007-03-28 | 323-434-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2007-03-28 | 323-434-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2007-03-26 | 323-539-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 04 | CA |
| 2007-03-26 | 323-557-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 13 | CA |
| 2007-03-23 | 323-649-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 11 | CA |
| 2007-03-23 | 323-920-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LSAN DA 09 | CA |
| 2007-03-23 | 323-920-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | LSAN DA 09 | CA |
| 2007-03-19 | 323-303-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2007-03-14 | 323-331-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-331-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-331-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-331-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-335-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-335-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-335-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-335-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-338-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-596-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 12 | CA |
| 2007-03-14 | 323-635-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-635-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-635-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-635-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-635-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-667-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-667-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-667-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-667-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-667-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-674-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-674-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-674-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-674-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-674-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-674-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-674-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-805-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-805-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-14 | 323-906-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 02 | CA |
| 2007-03-13 | 323-681-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 03 | CA |
| 2007-03-13 | 323-681-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 03 | CA |
| 2007-03-13 | 323-681-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 03 | 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.