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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2006-05-15 | 408-841-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS SOUTH | CA |
| 2006-05-15 | 408-854-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS NORTH | CA |
| 2006-05-15 | 408-854-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS NORTH | CA |
| 2006-05-12 | 408-854-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS NORTH | CA |
| 2006-05-08 | 408-841-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNJS SOUTH | CA |
| 2006-05-05 | 408-916-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNJS WEST | CA |
| 2006-05-05 | 408-931-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNJS WEST | CA |
| 2006-05-05 | 408-931-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNJS WEST | CA |
| 2006-05-05 | 408-931-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNJS WEST | CA |
| 2006-05-05 | 408-931-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNJS WEST | CA |
| 2006-05-05 | 408-931-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNJS WEST | CA |
| 2006-05-05 | 408-931-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNJS WEST | CA |
| 2006-05-04 | 408-565-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS WEST | CA |
| 2006-05-04 | 408-786-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS NORTH | CA |
| 2006-04-21 | 408-649-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNJS NORTH | CA |
| 2006-04-21 | 408-649-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNJS NORTH | CA |
| 2006-04-21 | 408-649-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNJS NORTH | CA |
| 2006-04-21 | 408-649-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNJS NORTH | CA |
| 2006-04-19 | 408-336-0XXX | 0000–0999 | Assigned | PACIFIC BELL | 9740 | SUNNYVALE | CA |
| 2006-04-19 | 408-336-1XXX | 1000–1999 | Assigned | PACIFIC BELL | 9740 | SUNNYVALE | CA |
| 2006-04-19 | 408-336-2XXX | 2000–2999 | Assigned | PACIFIC BELL | 9740 | SUNNYVALE | CA |
| 2006-04-19 | 408-336-3XXX | 3000–3999 | Assigned | PACIFIC BELL | 9740 | SUNNYVALE | CA |
| 2006-04-19 | 408-336-4XXX | 4000–4999 | Assigned | PACIFIC BELL | 9740 | SUNNYVALE | CA |
| 2006-04-19 | 408-336-5XXX | 5000–5999 | Assigned | PACIFIC BELL | 9740 | SUNNYVALE | CA |
| 2006-04-19 | 408-336-6XXX | 6000–6999 | Assigned | PACIFIC BELL | 9740 | SUNNYVALE | CA |
| 2006-04-19 | 408-336-7XXX | 7000–7999 | Assigned | PACIFIC BELL | 9740 | SUNNYVALE | CA |
| 2006-04-19 | 408-336-8XXX | 8000–8999 | Assigned | PACIFIC BELL | 9740 | SUNNYVALE | CA |
| 2006-04-19 | 408-336-9XXX | 9000–9999 | Assigned | PACIFIC BELL | 9740 | SUNNYVALE | CA |
| 2006-04-17 | 408-550-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNJS WEST | CA |
| 2006-04-17 | 408-550-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNJS WEST | CA |
| 2006-04-17 | 408-550-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNJS WEST | CA |
| 2006-04-14 | 408-854-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS NORTH | CA |
| 2006-04-10 | 408-310-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MORGANHILL | CA |
| 2006-04-10 | 408-310-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MORGANHILL | CA |
| 2006-04-10 | 408-326-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS WEST | CA |
| 2006-04-10 | 408-470-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SUNNYVALE | CA |
| 2006-04-10 | 408-470-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SUNNYVALE | CA |
| 2006-04-10 | 408-677-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNJS SOUTH | CA |
| 2006-04-10 | 408-677-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNJS SOUTH | CA |
| 2006-04-10 | 408-677-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNJS SOUTH | CA |
| 2006-04-10 | 408-963-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CAMPBELL | CA |
| 2006-04-10 | 408-963-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CAMPBELL | CA |
| 2006-04-07 | 408-338-1XXX | 1000–1999 | Assigned | PACIFIC BELL | 9740 | SUNNYVALE | CA |
| 2006-04-07 | 408-338-2XXX | 2000–2999 | Assigned | PACIFIC BELL | 9740 | SUNNYVALE | CA |
| 2006-04-07 | 408-338-3XXX | 3000–3999 | Assigned | PACIFIC BELL | 9740 | SUNNYVALE | CA |
| 2006-04-07 | 408-338-4XXX | 4000–4999 | Assigned | PACIFIC BELL | 9740 | SUNNYVALE | CA |
| 2006-04-05 | 408-796-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CAMPBELL | CA |
| 2006-03-23 | 408-931-7XXX | 7000–7999 | Assigned | PACIFIC BELL | 9740 | SNJS WEST | CA |
| 2006-03-23 | 408-931-8XXX | 8000–8999 | Assigned | PACIFIC BELL | 9740 | SNJS WEST | CA |
| 2006-03-22 | 408-385-7XXX | 7000–7999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | 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.