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 |
|---|---|---|---|---|---|---|---|
| 2015-03-12 | 916-695-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-03-12 | 916-695-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-03-12 | 916-695-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-03-12 | 916-695-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-03-12 | 916-695-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-03-12 | 916-695-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-03-12 | 916-695-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-03-12 | 916-695-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-03-06 | 916-598-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-03-06 | 916-917-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-03-05 | 916-547-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RSVL CTHT | CA |
| 2015-03-05 | 916-547-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RSVL CTHT | CA |
| 2015-03-04 | 916-578-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2015-03-04 | 916-578-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-03-04 | 916-578-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2015-03-04 | 916-578-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2015-03-04 | 916-578-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-03-04 | 916-578-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-03-04 | 916-578-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-03-04 | 916-578-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-03-04 | 916-578-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-03-04 | 916-578-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2015-03-03 | 916-579-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | FAIR OAKS | CA |
| 2015-03-03 | 916-579-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | FAIR OAKS | CA |
| 2015-03-03 | 916-579-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | FAIR OAKS | CA |
| 2015-03-03 | 916-579-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | FAIR OAKS | CA |
| 2015-02-27 | 916-897-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | ELK GROVE | CA |
| 2015-02-24 | 916-664-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM NORTH | CA |
| 2015-02-24 | 916-664-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM NORTH | CA |
| 2015-02-24 | 916-664-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM NORTH | CA |
| 2015-02-19 | 916-237-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | RIO LINDA | CA |
| 2015-02-19 | 916-430-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2015-02-19 | 916-430-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2015-02-19 | 916-495-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM NORTH | CA |
| 2015-02-19 | 916-495-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM NORTH | CA |
| 2015-02-19 | 916-495-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM NORTH | CA |
| 2015-02-19 | 916-582-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2015-02-18 | 916-970-2XXX | 2000–2999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SCRM MAIN | CA |
| 2015-02-17 | 916-970-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SCRM MAIN | CA |
| 2015-02-13 | 916-298-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | RSVL MAIN | CA |
| 2015-02-13 | 916-298-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | RSVL MAIN | CA |
| 2015-02-13 | 916-298-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | RSVL MAIN | CA |
| 2015-02-13 | 916-846-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | RSVL MAIN | CA |
| 2015-02-10 | 916-582-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | ELK GROVE | CA |
| 2015-02-09 | 916-598-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-02-09 | 916-598-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-02-09 | 916-598-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-02-09 | 916-598-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-02-09 | 916-598-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-01-29 | 916-527-5XXX | 5000–5999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | WALNUT GRV | 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.