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 916
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 |
|---|---|---|---|---|---|---|---|
| 2009-04-01 | 916-259-1XXX | 1000–1999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | SO PLACER | CA |
| 2009-04-01 | 916-741-4XXX | 4000–4999 | Assigned | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 7174 | SO PLACER | CA |
| 2009-04-01 | 916-899-6XXX | 6000–6999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | RSVL MAIN | CA |
| 2009-03-31 | 916-899-5XXX | 5000–5999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | RSVL MAIN | CA |
| 2009-03-25 | 916-520-2XXX | 2000–2999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SCRM MAIN | CA |
| 2009-03-25 | 916-692-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SCRM NORTH | CA |
| 2009-03-25 | 916-692-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SCRM NORTH | CA |
| 2009-03-10 | 916-259-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SO PLACER | CA |
| 2009-03-09 | 916-538-6XXX | 6000–6999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SCRM MAIN | CA |
| 2009-03-05 | 916-572-0XXX | 0000–0999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | SCRM MAIN | CA |
| 2009-03-03 | 916-560-3XXX | 3000–3999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | RSVL CTHT | CA |
| 2009-03-02 | 916-302-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PLEASATGRV | CA |
| 2009-03-02 | 916-889-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | SCRM MAIN | CA |
| 2009-02-17 | 916-585-9XXX | 9000–9999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 3964 | ELK GROVE | CA |
| 2009-02-13 | 916-544-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | ELK GROVE | CA |
| 2009-02-13 | 916-544-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | ELK GROVE | CA |
| 2009-02-13 | 916-546-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | FAIR OAKS | CA |
| 2009-02-06 | 916-467-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | FOLSOM | CA |
| 2009-02-06 | 916-585-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | ELK GROVE | CA |
| 2009-02-06 | 916-745-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | RSVL CTHT | CA |
| 2009-02-06 | 916-745-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | RSVL CTHT | CA |
| 2009-02-06 | 916-745-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | RSVL CTHT | CA |
| 2009-02-06 | 916-969-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | FAIR OAKS | CA |
| 2009-02-04 | 916-735-8XXX | 8000–8999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 3964 | RSVL CTHT | CA |
| 2009-01-29 | 916-469-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | SCRM MAIN | CA |
| 2009-01-29 | 916-865-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | RSVL MAIN | CA |
| 2009-01-28 | 916-469-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SCRM MAIN | CA |
| 2009-01-28 | 916-623-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ISLETON | CA |
| 2009-01-28 | 916-629-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | MEADOWVIEW | CA |
| 2009-01-28 | 916-674-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | MICHIGNBAR | CA |
| 2009-01-28 | 916-775-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | COURTLAND | CA |
| 2009-01-28 | 916-776-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | WALNUT GRV | CA |
| 2009-01-26 | 916-436-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FAIR OAKS | CA |
| 2009-01-26 | 916-459-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FAIR OAKS | CA |
| 2009-01-09 | 916-550-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SCRM NORTH | CA |
| 2009-01-07 | 916-865-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | RSVL MAIN | CA |
| 2008-12-30 | 916-550-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SCRM NORTH | CA |
| 2008-12-16 | 916-258-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LINCOLN | CA |
| 2008-12-16 | 916-359-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SCRM NORTH | CA |
| 2008-12-16 | 916-534-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | FAIR OAKS | CA |
| 2008-12-16 | 916-538-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SCRM MAIN | CA |
| 2008-12-16 | 916-538-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SCRM MAIN | CA |
| 2008-12-16 | 916-538-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SCRM MAIN | CA |
| 2008-12-16 | 916-538-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SCRM MAIN | CA |
| 2008-12-16 | 916-585-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ELK GROVE | CA |
| 2008-12-16 | 916-585-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ELK GROVE | CA |
| 2008-12-16 | 916-672-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SO PLACER | CA |
| 2008-12-16 | 916-915-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | RIO LINDA | CA |
| 2008-12-16 | 916-941-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | FOLSOM | CA |
| 2008-12-01 | 916-872-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | RSVL MAIN | 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.