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 |
|---|---|---|---|---|---|---|---|
| 2016-09-26 | 925-693-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | CLAYTON | CA |
| 2016-09-26 | 925-693-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | CLAYTON | CA |
| 2016-09-26 | 925-693-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | CLAYTON | CA |
| 2016-09-26 | 925-693-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | CLAYTON | CA |
| 2016-09-26 | 925-844-0XXX | 0000–0999 | Assigned | HD CARRIER LLC | 321J | CLAYTON | CA |
| 2016-09-26 | 925-844-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | CLAYTON | CA |
| 2016-09-26 | 925-844-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | CLAYTON | CA |
| 2016-09-26 | 925-993-0XXX | 0000–0999 | Assigned | HD CARRIER LLC | 321J | CLAYTON | CA |
| 2016-09-26 | 925-993-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | CLAYTON | CA |
| 2016-09-26 | 925-993-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | CLAYTON | CA |
| 2016-09-26 | 925-993-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | CLAYTON | CA |
| 2016-09-23 | 925-214-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | WALNUT CRK | CA |
| 2016-09-23 | 925-794-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | MORAGA | CA |
| 2016-09-21 | 925-201-3XXX | 3000–3999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | PLEASANTON | CA |
| 2016-09-20 | 925-856-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | DANVILLE | CA |
| 2016-09-20 | 925-856-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | DANVILLE | CA |
| 2016-09-16 | 925-399-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLEASANTON | CA |
| 2016-09-16 | 925-594-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DANVILLE | CA |
| 2016-09-15 | 925-399-3XXX | 3000–3999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | PLEASANTON | CA |
| 2016-09-13 | 925-214-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | WALNUT CRK | CA |
| 2016-09-13 | 925-433-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2016-08-30 | 925-390-6XXX | 6000–6999 | Assigned | SONIC TELECOM, LLC - CA | 433E | ECONTRCOST | CA |
| 2016-08-30 | 925-433-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | WALNUT CRK | CA |
| 2016-08-30 | 925-436-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ANTIOCH | CA |
| 2016-08-30 | 925-436-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ANTIOCH | CA |
| 2016-08-30 | 925-983-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | BSHP RNCH | CA |
| 2016-08-29 | 925-267-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | PITTSBURG | CA |
| 2016-08-29 | 925-399-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | PLEASANTON | CA |
| 2016-08-26 | 925-390-5XXX | 5000–5999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | ECONTRCOST | CA |
| 2016-08-26 | 925-623-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | PLEASANTON | CA |
| 2016-08-24 | 925-495-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | LIVERMORE | CA |
| 2016-08-24 | 925-812-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | MARTINEZ | CA |
| 2016-08-22 | 925-208-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | DANVILLE | CA |
| 2016-08-17 | 925-241-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | DUBLN-SNRM | CA |
| 2016-08-17 | 925-257-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | ORINDA | CA |
| 2016-08-17 | 925-266-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | WALNUT CRK | CA |
| 2016-08-17 | 925-267-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | PITTSBURG | CA |
| 2016-08-17 | 925-320-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | MORAGA | CA |
| 2016-08-17 | 925-375-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | CONCORD | CA |
| 2016-08-17 | 925-380-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | BSHP RNCH | CA |
| 2016-08-17 | 925-390-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | ECONTRCOST | CA |
| 2016-08-17 | 925-444-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | LAFAYETTE | CA |
| 2016-08-17 | 925-495-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | LIVERMORE | CA |
| 2016-08-17 | 925-517-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | PSBG WEST | CA |
| 2016-08-17 | 925-584-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | ANTIOCH | CA |
| 2016-08-17 | 925-623-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | PLEASANTON | CA |
| 2016-08-17 | 925-693-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | CLAYTON | CA |
| 2016-08-17 | 925-723-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | MARTINEZ | CA |
| 2016-08-17 | 925-725-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | DANVILLE | CA |
| 2016-08-17 | 925-835-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | SUNOL | 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.