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 |
|---|---|---|---|---|---|---|---|
| 2007-08-31 | 323-590-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-08-31 | 323-590-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-08-31 | 323-590-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-08-31 | 323-590-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-08-31 | 323-590-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 14 | CA |
| 2007-08-31 | 323-594-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2007-08-31 | 323-594-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2007-08-31 | 323-594-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2007-08-31 | 323-594-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2007-08-31 | 323-594-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2007-08-31 | 323-594-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2007-08-31 | 323-594-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MONTEBELLO | CA |
| 2007-08-31 | 323-608-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-08-31 | 323-608-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-08-31 | 323-608-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-08-31 | 323-608-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-08-31 | 323-608-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-08-31 | 323-608-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-08-31 | 323-608-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-08-31 | 323-608-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-08-31 | 323-608-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-08-31 | 323-608-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 14 | CA |
| 2007-08-22 | 323-904-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 13 | CA |
| 2007-08-21 | 323-470-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 03 | CA |
| 2007-08-21 | 323-532-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 03 | CA |
| 2007-08-21 | 323-532-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 03 | CA |
| 2007-08-16 | 323-354-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 05 | CA |
| 2007-08-16 | 323-446-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 05 | CA |
| 2007-08-16 | 323-446-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 05 | CA |
| 2007-08-13 | 323-479-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | MONTEBELLO | CA |
| 2007-08-13 | 323-519-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-08-13 | 323-519-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-08-13 | 323-519-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-08-13 | 323-519-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-08-13 | 323-519-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-08-13 | 323-519-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-08-10 | 323-775-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LSAN DA 06 | CA |
| 2007-08-10 | 323-775-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LSAN DA 06 | CA |
| 2007-08-10 | 323-775-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LSAN DA 06 | CA |
| 2007-08-02 | 323-519-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | MONTEBELLO | CA |
| 2007-08-02 | 323-519-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | MONTEBELLO | CA |
| 2007-07-31 | 323-909-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 04 | CA |
| 2007-07-16 | 323-601-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 12 | CA |
| 2007-07-16 | 323-944-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | LSAN DA 13 | CA |
| 2007-07-11 | 323-382-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-07-11 | 323-450-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-07-11 | 323-491-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-07-11 | 323-491-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-07-11 | 323-512-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-07-11 | 323-603-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | 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.