NumberResearchRecent thousands-block assignments
0 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, all time — NPA 408
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 |
|---|---|---|---|---|---|---|---|
| 2006-08-09 | 408-886-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNJS WEST | CA |
| 2006-08-09 | 408-886-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNJS WEST | CA |
| 2006-07-25 | 408-338-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SUNNYVALE | CA |
| 2006-07-25 | 408-338-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SUNNYVALE | CA |
| 2006-07-25 | 408-338-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SUNNYVALE | CA |
| 2006-07-19 | 408-628-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CAMPBELL | CA |
| 2006-07-18 | 408-402-3XXX | 3000–3999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | LOS GATOS | CA |
| 2006-07-13 | 408-338-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SUNNYVALE | CA |
| 2006-07-12 | 408-886-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS WEST | CA |
| 2006-07-11 | 408-841-9XXX | 9000–9999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SNJS SOUTH | CA |
| 2006-07-07 | 408-329-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SUNNYVALE | CA |
| 2006-07-07 | 408-628-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CAMPBELL | CA |
| 2006-07-07 | 408-649-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS NORTH | CA |
| 2006-06-30 | 408-722-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MORGANHILL | CA |
| 2006-06-22 | 408-329-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SUNNYVALE | CA |
| 2006-06-16 | 408-840-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | GILROY | CA |
| 2006-06-15 | 408-647-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SARATOGA | CA |
| 2006-06-15 | 408-649-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS NORTH | CA |
| 2006-06-15 | 408-841-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS SOUTH | CA |
| 2006-06-14 | 408-338-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SUNNYVALE | CA |
| 2006-06-13 | 408-352-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNJS WEST | CA |
| 2006-06-13 | 408-628-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CAMPBELL | CA |
| 2006-06-13 | 408-685-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SUNNYVALE | CA |
| 2006-06-12 | 408-792-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS WEST | CA |
| 2006-06-09 | 408-649-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNJS NORTH | CA |
| 2006-06-08 | 408-216-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS WEST | CA |
| 2006-06-08 | 408-310-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MORGANHILL | CA |
| 2006-06-08 | 408-310-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MORGANHILL | CA |
| 2006-06-02 | 408-841-4XXX | 4000–4999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SNJS SOUTH | CA |
| 2006-05-17 | 408-310-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | MORGANHILL | CA |
| 2006-05-17 | 408-310-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | MORGANHILL | CA |
| 2006-05-17 | 408-512-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | SNJS WEST | CA |
| 2006-05-17 | 408-512-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | SNJS WEST | CA |
| 2006-05-17 | 408-512-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | SNJS WEST | CA |
| 2006-05-17 | 408-512-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SNJS WEST | CA |
| 2006-05-17 | 408-545-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | SNJS NORTH | CA |
| 2006-05-17 | 408-627-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | SNJS NORTH | CA |
| 2006-05-17 | 408-648-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | SNJS WEST | CA |
| 2006-05-17 | 408-771-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | SNJS WEST | CA |
| 2006-05-17 | 408-841-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | SNJS SOUTH | CA |
| 2006-05-17 | 408-841-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | SNJS SOUTH | CA |
| 2006-05-17 | 408-841-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | SNJS SOUTH | CA |
| 2006-05-17 | 408-841-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | SNJS SOUTH | CA |
| 2006-05-17 | 408-854-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | SNJS NORTH | CA |
| 2006-05-17 | 408-854-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | SNJS NORTH | CA |
| 2006-05-17 | 408-854-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | SNJS NORTH | CA |
| 2006-05-17 | 408-854-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | SNJS NORTH | CA |
| 2006-05-17 | 408-854-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SNJS NORTH | CA |
| 2006-05-17 | 408-876-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | SNJS NORTH | CA |
| 2006-05-17 | 408-876-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SNJS NORTH | 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.