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 |
|---|---|---|---|---|---|---|---|
| 2016-07-26 | 408-721-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SUNNYVALE | CA |
| 2016-07-26 | 408-721-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SUNNYVALE | CA |
| 2016-07-22 | 408-495-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNJS WEST | CA |
| 2016-07-22 | 408-495-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNJS WEST | CA |
| 2016-07-22 | 408-495-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNJS WEST | CA |
| 2016-07-22 | 408-652-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNJS WEST | CA |
| 2016-07-22 | 408-652-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNJS WEST | CA |
| 2016-07-19 | 408-360-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS SOUTH | CA |
| 2016-07-19 | 408-652-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SNJS WEST | CA |
| 2016-07-07 | 408-878-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS WEST | CA |
| 2016-06-21 | 408-669-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNJS SOUTH | CA |
| 2016-05-16 | 408-897-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | SANANTONIO | CA |
| 2016-05-16 | 408-897-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | SANANTONIO | CA |
| 2016-05-16 | 408-897-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | SANANTONIO | CA |
| 2016-05-16 | 408-897-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | SANANTONIO | CA |
| 2016-04-26 | 408-617-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | SUNNYVALE | CA |
| 2016-01-25 | 408-617-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SUNNYVALE | CA |
| 2016-01-25 | 408-617-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | SUNNYVALE | CA |
| 2015-11-24 | 408-617-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | SUNNYVALE | CA |
| 2015-11-24 | 408-617-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SUNNYVALE | CA |
| 2015-10-30 | 408-878-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNJS WEST | CA |
| 2015-09-24 | 408-342-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | SNJS WEST | CA |
| 2015-09-23 | 408-865-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNJS WEST | CA |
| 2015-09-14 | 408-669-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS SOUTH | CA |
| 2015-04-01 | 408-908-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS NORTH | CA |
| 2015-03-17 | 408-908-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | SNJS NORTH | CA |
| 2015-02-17 | 408-897-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SANANTONIO | CA |
| 2015-01-14 | 408-669-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS SOUTH | CA |
| 2015-01-08 | 408-669-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS SOUTH | CA |
| 2015-01-08 | 408-669-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SNJS SOUTH | CA |
| 2014-12-02 | 408-647-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SARATOGA | CA |
| 2014-12-02 | 408-669-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SNJS SOUTH | CA |
| 2014-12-02 | 408-669-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SNJS SOUTH | CA |
| 2014-11-10 | 408-669-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNJS SOUTH | CA |
| 2014-11-10 | 408-669-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNJS SOUTH | CA |
| 2014-11-10 | 408-669-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNJS SOUTH | CA |
| 2014-11-06 | 408-359-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SARATOGA | CA |
| 2014-11-06 | 408-359-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SARATOGA | CA |
| 2014-11-06 | 408-898-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SARATOGA | CA |
| 2014-10-21 | 408-898-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SARATOGA | CA |
| 2014-10-08 | 408-359-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SARATOGA | CA |
| 2014-10-08 | 408-741-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | SARATOGA | CA |
| 2014-09-29 | 408-913-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SARATOGA | CA |
| 2014-09-29 | 408-913-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SARATOGA | CA |
| 2014-09-15 | 408-872-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SARATOGA | CA |
| 2014-09-15 | 408-872-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | SARATOGA | CA |
| 2014-09-04 | 408-212-4XXX | 4000–4999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SUNNYVALE | CA |
| 2014-08-29 | 408-370-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CAMPBELL | CA |
| 2014-08-29 | 408-856-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNJS NORTH | CA |
| 2014-08-27 | 408-872-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SARATOGA | 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.