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 |
|---|---|---|---|---|---|---|---|
| 2010-01-19 | 408-458-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | LOS GATOS | CA |
| 2009-12-30 | 408-337-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | GILROY | CA |
| 2009-12-30 | 408-337-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | GILROY | CA |
| 2009-12-19 | 408-418-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS WEST | CA |
| 2009-12-19 | 408-418-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS WEST | CA |
| 2009-12-19 | 408-636-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SUNNYVALE | CA |
| 2009-12-09 | 408-461-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-12-09 | 408-461-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-12-09 | 408-461-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-12-09 | 408-634-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-12-09 | 408-634-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-12-09 | 408-634-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-12-09 | 408-634-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-12-09 | 408-634-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-12-09 | 408-634-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-12-09 | 408-634-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-12-09 | 408-634-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-12-09 | 408-657-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-12-09 | 408-657-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-12-09 | 408-657-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-12-09 | 408-657-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-12-09 | 408-657-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-12-09 | 408-657-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-12-09 | 408-676-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-12-09 | 408-676-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-12-09 | 408-676-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SAN MARTIN | CA |
| 2009-11-25 | 408-520-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SNJS NORTH | CA |
| 2009-11-24 | 408-459-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SNJS WEST | CA |
| 2009-11-24 | 408-462-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SUNNYVALE | CA |
| 2009-11-24 | 408-599-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SNJS SOUTH | CA |
| 2009-11-23 | 408-484-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SARATOGA | CA |
| 2009-11-23 | 408-634-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SAN MARTIN | CA |
| 2009-11-19 | 408-409-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | CAMPBELL | CA |
| 2009-11-17 | 408-372-9XXX | 9000–9999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNJS NORTH | CA |
| 2009-10-28 | 408-512-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | SNJS WEST | CA |
| 2009-10-26 | 408-217-7XXX | 7000–7999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SNJS WEST | CA |
| 2009-10-21 | 408-337-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | GILROY | CA |
| 2009-10-14 | 408-400-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | SUNNYVALE | CA |
| 2009-10-12 | 408-365-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNJS SOUTH | CA |
| 2009-10-12 | 408-454-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNJS WEST | CA |
| 2009-10-12 | 408-518-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNJS NORTH | CA |
| 2009-10-12 | 408-548-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SUNNYVALE | CA |
| 2009-10-12 | 408-596-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LOS GATOS | CA |
| 2009-10-12 | 408-596-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LOS GATOS | CA |
| 2009-10-12 | 408-805-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SARATOGA | CA |
| 2009-10-12 | 408-805-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SARATOGA | CA |
| 2009-10-08 | 408-796-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CAMPBELL | CA |
| 2009-10-02 | 408-706-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MORGANHILL | CA |
| 2009-09-23 | 408-385-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CAMPBELL | CA |
| 2009-09-22 | 408-220-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SUNNYVALE | 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.