NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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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Apr 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-05-11 | 916-582-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ELK GROVE | CA |
| 2015-05-11 | 916-582-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ELK GROVE | CA |
| 2015-05-11 | 916-664-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | SCRM NORTH | CA |
| 2015-05-11 | 916-693-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FOLSOM | CA |
| 2015-05-11 | 916-693-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FOLSOM | CA |
| 2015-05-11 | 916-693-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FOLSOM | CA |
| 2015-05-11 | 916-693-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FOLSOM | CA |
| 2015-05-11 | 916-805-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FOLSOM | CA |
| 2015-05-07 | 916-793-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2015-05-07 | 916-793-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2015-05-07 | 916-793-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2015-05-05 | 916-738-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | SCRM MAIN | CA |
| 2015-05-05 | 916-841-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-05-05 | 916-841-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-05-05 | 916-841-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-05-05 | 916-841-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-05-05 | 916-841-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-05-05 | 916-841-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-05-05 | 916-841-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-04-30 | 916-579-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | FAIR OAKS | CA |
| 2015-04-30 | 916-827-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | FAIR OAKS | CA |
| 2015-04-30 | 916-827-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | FAIR OAKS | CA |
| 2015-04-30 | 916-827-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | FAIR OAKS | CA |
| 2015-04-24 | 916-758-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SCRM MAIN | CA |
| 2015-04-24 | 916-758-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SCRM MAIN | CA |
| 2015-04-21 | 916-758-5XXX | 5000–5999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SCRM MAIN | CA |
| 2015-04-20 | 916-793-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2015-04-20 | 916-793-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2015-04-20 | 916-796-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | RIO LINDA | CA |
| 2015-04-20 | 916-796-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | RIO LINDA | CA |
| 2015-04-20 | 916-796-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | RIO LINDA | CA |
| 2015-04-17 | 916-695-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | SCRM MAIN | CA |
| 2015-04-13 | 916-582-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2015-04-13 | 916-680-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2015-04-13 | 916-680-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2015-04-13 | 916-680-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2015-04-13 | 916-680-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2015-04-13 | 916-680-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2015-04-13 | 916-680-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | SCRM MAIN | CA |
| 2015-04-10 | 916-758-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SCRM MAIN | CA |
| 2015-04-07 | 916-547-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | RSVL CTHT | CA |
| 2015-04-01 | 916-758-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SCRM MAIN | CA |
| 2015-04-01 | 916-758-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | SCRM MAIN | CA |
| 2015-03-18 | 916-664-3XXX | 3000–3999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SCRM NORTH | CA |
| 2015-03-17 | 916-693-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | FOLSOM | CA |
| 2015-03-17 | 916-693-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | FOLSOM | CA |
| 2015-03-17 | 916-890-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | SCRM NORTH | CA |
| 2015-03-17 | 916-890-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | SCRM NORTH | CA |
| 2015-03-17 | 916-890-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | SCRM NORTH | CA |
| 2015-03-13 | 916-586-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | FOLSOM | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.