NumberResearchRecent thousands-block assignments
35 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 |
|---|---|---|---|---|---|---|---|
| 2004-03-16 | 925-402-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ORINDA | CA |
| 2004-03-12 | 925-726-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2004-03-07 | 925-726-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2004-02-10 | 925-308-7XXX | 7000–7999 | Assigned | PACIFIC BELL | 9740 | ECONTRCOST | CA |
| 2004-02-10 | 925-308-8XXX | 8000–8999 | Assigned | PACIFIC BELL | 9740 | ECONTRCOST | CA |
| 2004-02-05 | 925-321-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LIVERMORE | CA |
| 2004-02-02 | 925-324-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2004-02-02 | 925-324-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2004-01-13 | 925-726-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2003-12-25 | 925-265-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2003-12-23 | 925-394-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BSHP RNCH | CA |
| 2003-12-23 | 925-526-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PITTSBURG | CA |
| 2003-12-11 | 925-305-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2003-12-08 | 925-727-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2003-12-08 | 925-727-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2003-12-08 | 925-727-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2003-12-08 | 925-727-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2003-12-08 | 925-727-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | ANTIOCH | CA |
| 2003-10-29 | 925-237-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ANTIOCH | CA |
| 2003-10-24 | 925-305-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
| 2003-10-16 | 925-234-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ANTIOCH | CA |
| 2003-10-16 | 925-719-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | DUBLN-SNRM | CA |
| 2003-10-16 | 925-719-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | DUBLN-SNRM | CA |
| 2003-10-09 | 925-813-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANTIOCH | CA |
| 2003-10-09 | 925-813-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANTIOCH | CA |
| 2003-10-09 | 925-813-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANTIOCH | CA |
| 2003-09-26 | 925-400-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | PLEASANTON | CA |
| 2003-09-24 | 925-201-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PLEASANTON | CA |
| 2003-09-23 | 925-233-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | SUNOL | CA |
| 2003-09-23 | 925-317-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | ORINDA | CA |
| 2003-09-23 | 925-635-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | PITTSBURG | CA |
| 2003-09-23 | 925-635-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | PITTSBURG | CA |
| 2003-09-23 | 925-659-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | BSHP RNCH | CA |
| 2003-09-23 | 925-659-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | BSHP RNCH | CA |
| 2003-09-17 | 925-282-2XXX | 2000–2999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LAFAYETTE | CA |
| 2003-08-21 | 925-203-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PITTSBURG | CA |
| 2003-08-21 | 925-231-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MARTINEZ | CA |
| 2003-08-21 | 925-232-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | PSBG WEST | CA |
| 2003-08-21 | 925-235-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MORAGA | CA |
| 2003-08-14 | 925-324-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2003-08-14 | 925-324-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2003-08-05 | 925-271-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PLEASANTON | CA |
| 2003-08-04 | 925-270-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CONCORD | CA |
| 2003-07-17 | 925-234-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ANTIOCH | CA |
| 2003-07-17 | 925-234-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ANTIOCH | CA |
| 2003-07-17 | 925-234-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ANTIOCH | CA |
| 2003-07-17 | 925-234-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ANTIOCH | CA |
| 2003-07-15 | 925-262-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | WALNUT CRK | CA |
| 2003-06-03 | 925-302-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | BSHP RNCH | CA |
| 2003-04-25 | 925-726-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | CONCORD | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.