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
Mar 2026
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Jan 2026
Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2005-05-12 | 916-671-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FAIR OAKS | CA |
| 2005-05-12 | 916-676-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RSVL CTHT | CA |
| 2005-05-12 | 916-676-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RSVL CTHT | CA |
| 2005-05-12 | 916-676-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RSVL CTHT | CA |
| 2005-05-12 | 916-679-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SCRM NORTH | CA |
| 2005-05-12 | 916-724-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RSVL MAIN | CA |
| 2005-05-12 | 916-724-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RSVL MAIN | CA |
| 2005-05-12 | 916-724-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RSVL MAIN | CA |
| 2005-05-12 | 916-724-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RSVL MAIN | CA |
| 2005-05-12 | 916-760-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SCRM MAIN | CA |
| 2005-05-12 | 916-760-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SCRM MAIN | CA |
| 2005-05-11 | 916-677-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | RSVL MAIN | CA |
| 2005-05-11 | 916-677-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | RSVL MAIN | CA |
| 2005-05-11 | 916-677-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | RSVL MAIN | CA |
| 2005-05-05 | 916-251-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SO PLACER | CA |
| 2005-05-05 | 916-384-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SCRM MAIN | CA |
| 2005-05-05 | 916-384-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SCRM MAIN | CA |
| 2005-05-05 | 916-384-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SCRM MAIN | CA |
| 2005-05-03 | 916-437-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | SCRM NORTH | CA |
| 2005-05-02 | 916-209-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LINCOLN | CA |
| 2005-05-02 | 916-209-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LINCOLN | CA |
| 2005-05-02 | 916-209-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LINCOLN | CA |
| 2005-05-02 | 916-209-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LINCOLN | CA |
| 2005-05-02 | 916-226-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ELK GROVE | CA |
| 2005-05-02 | 916-357-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FOLSOM | CA |
| 2005-05-02 | 916-357-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FOLSOM | CA |
| 2005-05-02 | 916-357-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | FOLSOM | CA |
| 2005-05-02 | 916-458-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FOLSOM | CA |
| 2005-05-02 | 916-458-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FOLSOM | CA |
| 2005-05-02 | 916-458-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FOLSOM | CA |
| 2005-05-02 | 916-458-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FOLSOM | CA |
| 2005-05-02 | 916-479-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ELK GROVE | CA |
| 2005-05-02 | 916-479-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ELK GROVE | CA |
| 2005-05-02 | 916-479-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ELK GROVE | CA |
| 2005-05-02 | 916-644-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | LINCOLN | CA |
| 2005-05-02 | 916-644-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | LINCOLN | CA |
| 2005-05-02 | 916-644-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | LINCOLN | CA |
| 2005-04-28 | 916-230-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2005-04-28 | 916-239-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM NORTH | CA |
| 2005-04-25 | 916-251-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SO PLACER | CA |
| 2005-04-22 | 916-724-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | RSVL MAIN | CA |
| 2005-04-22 | 916-949-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2005-04-22 | 916-949-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2005-04-15 | 916-236-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | ELK GROVE | CA |
| 2005-04-15 | 916-236-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | ELK GROVE | CA |
| 2005-04-15 | 916-236-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | ELK GROVE | CA |
| 2005-04-14 | 916-968-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | FAIR OAKS | CA |
| 2005-04-14 | 916-968-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | FAIR OAKS | CA |
| 2005-04-14 | 916-968-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | FAIR OAKS | CA |
| 2005-04-14 | 916-968-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | FAIR OAKS | 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.