NumberResearchRecent thousands-block assignments
35 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, last 30 days — NPA 925
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2005-05-18 | 925-884-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BSHP RNCH | CA |
| 2005-05-18 | 925-884-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BSHP RNCH | CA |
| 2005-05-18 | 925-884-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | BSHP RNCH | CA |
| 2005-05-16 | 925-300-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | WALNUT CRK | CA |
| 2005-05-13 | 925-813-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANTIOCH | CA |
| 2005-05-11 | 925-558-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | DUBLN-SNRM | CA |
| 2005-05-11 | 925-752-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2005-05-11 | 925-752-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2005-05-11 | 925-752-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2005-05-11 | 925-752-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2005-05-11 | 925-848-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2005-05-11 | 925-848-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2005-05-11 | 925-848-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2005-05-11 | 925-848-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2005-05-11 | 925-848-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2005-05-11 | 925-848-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2005-05-05 | 925-203-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PITTSBURG | CA |
| 2005-04-25 | 925-233-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SUNOL | CA |
| 2005-04-25 | 925-718-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DANVILLE | CA |
| 2005-04-14 | 925-324-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2005-04-01 | 925-478-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | WALNUT CRK | CA |
| 2005-04-01 | 925-478-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | WALNUT CRK | CA |
| 2005-03-31 | 925-303-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ANTIOCH | CA |
| 2005-03-16 | 925-208-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | DANVILLE | CA |
| 2005-03-16 | 925-315-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | LIVERMORE | CA |
| 2005-03-14 | 925-522-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ANTIOCH | CA |
| 2005-03-11 | 925-380-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BSHP RNCH | CA |
| 2005-03-09 | 925-226-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PLEASANTON | CA |
| 2005-03-08 | 925-435-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | CONCORD | CA |
| 2005-03-06 | 925-301-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ANTIOCH | CA |
| 2005-03-06 | 925-301-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ANTIOCH | CA |
| 2005-02-17 | 925-231-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MARTINEZ | CA |
| 2005-02-17 | 925-307-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | DUBLN-SNRM | CA |
| 2005-02-17 | 925-826-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CONCORD | CA |
| 2005-02-17 | 925-889-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | CLAYTON | CA |
| 2005-02-02 | 925-695-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2005-01-26 | 925-528-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ORINDA | CA |
| 2005-01-13 | 925-232-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PSBG WEST | CA |
| 2005-01-13 | 925-272-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | DANVILLE | CA |
| 2005-01-13 | 925-290-1XXX | 1000–1999 | Assigned | XO CALIFORNIA, INC. | 7262 | LIVERMORE | CA |
| 2005-01-13 | 925-290-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LIVERMORE | CA |
| 2005-01-13 | 925-290-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LIVERMORE | CA |
| 2005-01-12 | 925-263-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DANVILLE | CA |
| 2005-01-12 | 925-263-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DANVILLE | CA |
| 2005-01-12 | 925-263-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DANVILLE | CA |
| 2005-01-12 | 925-324-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2005-01-06 | 925-233-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SUNOL | CA |
| 2005-01-04 | 925-232-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PSBG WEST | CA |
| 2004-12-29 | 925-235-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MORAGA | CA |
| 2004-12-29 | 925-887-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CONCORD | 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.