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 |
|---|---|---|---|---|---|---|---|
| 2007-06-07 | 323-501-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-06-07 | 323-501-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-06-07 | 323-501-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-06-07 | 323-501-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-06-07 | 323-501-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-06-07 | 323-501-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | MONTEBELLO | CA |
| 2007-06-07 | 323-506-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-06-07 | 323-506-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-06-07 | 323-506-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-06-07 | 323-506-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-06-07 | 323-506-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-06-07 | 323-506-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-06-07 | 323-506-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-06-07 | 323-506-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-06-07 | 323-506-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-06-07 | 323-506-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | MONTEBELLO | CA |
| 2007-06-01 | 323-272-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-06-01 | 323-603-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 14 | CA |
| 2007-06-01 | 323-944-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-06-01 | 323-944-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-06-01 | 323-944-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-06-01 | 323-944-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-06-01 | 323-944-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-06-01 | 323-944-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-218-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-272-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-272-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-381-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-381-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-424-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-424-1XXX | 1000–1999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-424-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-424-5XXX | 5000–5999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-424-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-424-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-424-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-557-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-557-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-557-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-571-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-602-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-602-4XXX | 4000–4999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-602-6XXX | 6000–6999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-602-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-602-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-602-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-617-7XXX | 7000–7999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-677-3XXX | 3000–3999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-677-8XXX | 8000–8999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | CA |
| 2007-05-29 | 323-866-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | LSAN DA 13 | 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.