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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Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2008-02-15 | 408-550-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | SNJS WEST | CA |
| 2008-02-08 | 408-468-6XXX | 6000–6999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNJS NORTH | CA |
| 2008-02-08 | 408-493-1XXX | 1000–1999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNJS NORTH | CA |
| 2008-02-01 | 408-824-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS NORTH | CA |
| 2008-02-01 | 408-824-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS NORTH | CA |
| 2008-01-31 | 408-549-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS WEST | CA |
| 2008-01-29 | 408-990-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | SUNNYVALE | CA |
| 2008-01-28 | 408-665-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | GILROY | CA |
| 2008-01-24 | 408-600-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS SOUTH | CA |
| 2008-01-18 | 408-500-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | MORGANHILL | CA |
| 2008-01-17 | 408-260-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS WEST | CA |
| 2008-01-17 | 408-550-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS WEST | CA |
| 2008-01-16 | 408-706-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MORGANHILL | CA |
| 2008-01-16 | 408-706-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MORGANHILL | CA |
| 2008-01-16 | 408-706-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MORGANHILL | CA |
| 2008-01-08 | 408-429-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CAMPBELL | CA |
| 2007-12-27 | 408-600-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | SNJS SOUTH | CA |
| 2007-12-27 | 408-600-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | SNJS SOUTH | CA |
| 2007-12-27 | 408-824-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | SNJS NORTH | CA |
| 2007-12-27 | 408-824-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | SNJS NORTH | CA |
| 2007-12-21 | 408-512-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS WEST | CA |
| 2007-12-07 | 408-364-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CAMPBELL | CA |
| 2007-12-07 | 408-963-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | CAMPBELL | CA |
| 2007-12-03 | 408-466-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CAMPBELL | CA |
| 2007-11-28 | 408-217-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS WEST | CA |
| 2007-11-28 | 408-429-6XXX | 6000–6999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CAMPBELL | CA |
| 2007-11-28 | 408-429-7XXX | 7000–7999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CAMPBELL | CA |
| 2007-11-28 | 408-461-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SAN MARTIN | CA |
| 2007-11-28 | 408-665-4XXX | 4000–4999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | GILROY | CA |
| 2007-11-21 | 408-600-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS SOUTH | CA |
| 2007-11-21 | 408-824-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS NORTH | CA |
| 2007-11-20 | 408-613-2XXX | 2000–2999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SNJS SOUTH | CA |
| 2007-11-20 | 408-824-5XXX | 5000–5999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SNJS NORTH | CA |
| 2007-11-15 | 408-642-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | SNJS WEST | CA |
| 2007-11-06 | 408-500-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MORGANHILL | CA |
| 2007-10-29 | 408-642-1XXX | 1000–1999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SNJS WEST | CA |
| 2007-10-29 | 408-642-5XXX | 5000–5999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SNJS WEST | CA |
| 2007-10-25 | 408-466-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CAMPBELL | CA |
| 2007-10-23 | 408-665-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | GILROY | CA |
| 2007-10-23 | 408-665-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | GILROY | CA |
| 2007-10-23 | 408-990-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | SUNNYVALE | CA |
| 2007-10-23 | 408-990-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | SUNNYVALE | CA |
| 2007-10-22 | 408-824-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS NORTH | CA |
| 2007-10-17 | 408-533-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS WEST | CA |
| 2007-10-16 | 408-642-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | SNJS WEST | CA |
| 2007-10-16 | 408-642-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | SNJS WEST | CA |
| 2007-10-15 | 408-665-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | GILROY | CA |
| 2007-10-15 | 408-827-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | LOS GATOS | CA |
| 2007-10-10 | 408-665-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | GILROY | CA |
| 2007-09-27 | 408-466-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CAMPBELL | 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.