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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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2005-07-26 | 916-833-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SCRM MAIN | CA |
| 2005-07-26 | 916-833-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SCRM MAIN | CA |
| 2005-07-26 | 916-873-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SCRM MAIN | CA |
| 2005-07-26 | 916-873-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SCRM MAIN | CA |
| 2005-07-26 | 916-873-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SCRM MAIN | CA |
| 2005-07-26 | 916-873-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SCRM MAIN | CA |
| 2005-07-26 | 916-873-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SCRM MAIN | CA |
| 2005-07-26 | 916-873-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SCRM MAIN | CA |
| 2005-07-11 | 916-756-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | COURTLAND | CA |
| 2005-07-08 | 916-670-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2005-07-08 | 916-670-6XXX | 6000–6999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 3964 | ELK GROVE | CA |
| 2005-07-08 | 916-687-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ELK GROVE | CA |
| 2005-07-08 | 916-687-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ELK GROVE | CA |
| 2005-07-07 | 916-239-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM NORTH | CA |
| 2005-07-07 | 916-273-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2005-07-05 | 916-270-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | WALNUT GRV | CA |
| 2005-07-05 | 916-623-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ISLETON | CA |
| 2005-07-05 | 916-756-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | COURTLAND | CA |
| 2005-07-01 | 916-295-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | LINCOLN | CA |
| 2005-06-29 | 916-367-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RSVL MAIN | CA |
| 2005-06-28 | 916-437-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SCRM NORTH | CA |
| 2005-06-27 | 916-252-5XXX | 5000–5999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | PLEASATGRV | CA |
| 2005-06-22 | 916-405-6XXX | 6000–6999 | Assigned | CITIZENS TELECOM CA. DBA FRONTIER COM OF CA | 2308 | ELK GROVE | CA |
| 2005-06-22 | 916-478-9XXX | 9000–9999 | Assigned | CITIZENS TELECOM CA. DBA FRONTIER COM OF CA | 2308 | ELK GROVE | CA |
| 2005-06-22 | 916-525-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ELK GROVE | CA |
| 2005-06-22 | 916-525-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ELK GROVE | CA |
| 2005-06-21 | 916-258-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LINCOLN | CA |
| 2005-06-19 | 916-844-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FAIR OAKS | CA |
| 2005-06-16 | 916-478-4XXX | 4000–4999 | Assigned | CITIZENS TELECOM CA. DBA FRONTIER COM OF CA | 2308 | ELK GROVE | CA |
| 2005-06-13 | 916-626-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SO PLACER | CA |
| 2005-06-07 | 916-254-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2005-06-07 | 916-267-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2005-05-24 | 916-690-8XXX | 8000–8999 | Assigned | CITIZENS TELECOM CA. DBA FRONTIER COM OF CA | 2308 | ELK GROVE | CA |
| 2005-05-24 | 916-960-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | RSVL MAIN | CA |
| 2005-05-19 | 916-833-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SCRM MAIN | CA |
| 2005-05-19 | 916-833-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SCRM MAIN | CA |
| 2005-05-19 | 916-833-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SCRM MAIN | CA |
| 2005-05-19 | 916-833-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SCRM MAIN | CA |
| 2005-05-17 | 916-254-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2005-05-12 | 916-415-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SO PLACER | CA |
| 2005-05-12 | 916-415-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SO PLACER | CA |
| 2005-05-12 | 916-415-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SO PLACER | CA |
| 2005-05-12 | 916-560-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RSVL CTHT | CA |
| 2005-05-12 | 916-560-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RSVL CTHT | CA |
| 2005-05-12 | 916-560-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RSVL CTHT | CA |
| 2005-05-12 | 916-563-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SCRM NORTH | CA |
| 2005-05-12 | 916-570-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SCRM NORTH | CA |
| 2005-05-12 | 916-570-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | SCRM NORTH | CA |
| 2005-05-12 | 916-577-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SO PLACER | CA |
| 2005-05-12 | 916-580-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | 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.