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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2007-01-09 | 916-934-5XXX | 5000–5999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 3964 | FOLSOM | CA |
| 2006-12-29 | 916-253-9XXX | 9000–9999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | LINCOLN | CA |
| 2006-12-27 | 916-259-4XXX | 4000–4999 | Assigned | ASTOUND BROADBAND, LLC - CA | 485E | SO PLACER | CA |
| 2006-12-27 | 916-335-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RIO LINDA | CA |
| 2006-12-15 | 916-467-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FOLSOM | CA |
| 2006-12-14 | 916-533-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2006-12-14 | 916-533-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2006-12-14 | 916-533-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2006-12-14 | 916-533-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2006-12-01 | 916-388-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2006-12-01 | 916-629-9XXX | 9000–9999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | MEADOWVIEW | CA |
| 2006-12-01 | 916-897-8XXX | 8000–8999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | ELK GROVE | CA |
| 2006-12-01 | 916-897-9XXX | 9000–9999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | ELK GROVE | CA |
| 2006-11-22 | 916-222-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | MICHIGNBAR | CA |
| 2006-11-22 | 916-222-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | MICHIGNBAR | CA |
| 2006-11-22 | 916-222-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | MICHIGNBAR | CA |
| 2006-11-22 | 916-222-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | MICHIGNBAR | CA |
| 2006-11-22 | 916-222-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | MICHIGNBAR | CA |
| 2006-11-22 | 916-222-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | MICHIGNBAR | CA |
| 2006-11-22 | 916-222-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | MICHIGNBAR | CA |
| 2006-11-22 | 916-222-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | MICHIGNBAR | CA |
| 2006-11-22 | 916-222-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | MICHIGNBAR | CA |
| 2006-11-22 | 916-222-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | MICHIGNBAR | CA |
| 2006-11-15 | 916-517-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | RSVL MAIN | CA |
| 2006-11-03 | 916-283-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | SCRM NORTH | CA |
| 2006-11-03 | 916-293-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | FOLSOM | CA |
| 2006-11-03 | 916-627-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | ELK GROVE | CA |
| 2006-11-03 | 916-643-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | SCRM NORTH | CA |
| 2006-11-03 | 916-643-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | SCRM NORTH | CA |
| 2006-11-03 | 916-647-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | ELK GROVE | CA |
| 2006-11-03 | 916-647-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | ELK GROVE | CA |
| 2006-11-03 | 916-676-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | RSVL CTHT | CA |
| 2006-11-03 | 916-676-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | RSVL CTHT | CA |
| 2006-11-03 | 916-904-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | FAIR OAKS | CA |
| 2006-11-03 | 916-904-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | FAIR OAKS | CA |
| 2006-11-03 | 916-904-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | FAIR OAKS | CA |
| 2006-11-02 | 916-617-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2006-11-02 | 916-617-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2006-11-02 | 916-617-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2006-11-02 | 916-617-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2006-11-02 | 916-627-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2006-11-02 | 916-856-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2006-11-02 | 916-856-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2006-11-02 | 916-856-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2006-11-02 | 916-856-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2006-10-31 | 916-932-5XXX | 5000–5999 | Assigned | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 7174 | FOLSOM | CA |
| 2006-10-25 | 916-335-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RIO LINDA | CA |
| 2006-10-11 | 916-258-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LINCOLN | CA |
| 2006-10-11 | 916-358-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FOLSOM | CA |
| 2006-10-11 | 916-358-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FOLSOM | 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.