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 |
|---|---|---|---|---|---|---|---|
| 2011-01-26 | 925-364-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DUBLN-SNRM | CA |
| 2011-01-19 | 925-331-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ANTIOCH | CA |
| 2011-01-19 | 925-627-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | WALNUT CRK | CA |
| 2011-01-14 | 925-222-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CONCORD | CA |
| 2011-01-14 | 925-317-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ORINDA | CA |
| 2011-01-07 | 925-605-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LIVERMORE | CA |
| 2011-01-07 | 925-979-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2011-01-04 | 925-364-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | DUBLN-SNRM | CA |
| 2010-12-28 | 925-331-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ANTIOCH | CA |
| 2010-12-22 | 925-953-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | WALNUT CRK | CA |
| 2010-12-22 | 925-953-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | WALNUT CRK | CA |
| 2010-12-21 | 925-318-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | PITTSBURG | CA |
| 2010-12-21 | 925-418-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | ECONTRCOST | CA |
| 2010-12-20 | 925-474-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | PLEASANTON | CA |
| 2010-12-09 | 925-309-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | DANVILLE | CA |
| 2010-12-07 | 925-588-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA |
| 2010-12-03 | 925-208-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | DANVILLE | CA |
| 2010-11-22 | 925-318-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PITTSBURG | CA |
| 2010-11-22 | 925-529-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | ANTIOCH | CA |
| 2010-11-22 | 925-529-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | ANTIOCH | CA |
| 2010-11-22 | 925-727-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ANTIOCH | CA |
| 2010-11-22 | 925-954-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | WALNUT CRK | CA |
| 2010-11-11 | 925-243-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LIVERMORE | CA |
| 2010-11-11 | 925-263-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DANVILLE | CA |
| 2010-11-11 | 925-331-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ANTIOCH | CA |
| 2010-11-11 | 925-635-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PITTSBURG | CA |
| 2010-11-11 | 925-726-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CONCORD | CA |
| 2010-11-11 | 925-951-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | WALNUT CRK | CA |
| 2010-11-10 | 925-246-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CONCORD | CA |
| 2010-11-10 | 925-566-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CONCORD | CA |
| 2010-11-03 | 925-800-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | LIVERMORE | CA |
| 2010-11-03 | 925-900-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | LAFAYETTE | CA |
| 2010-10-27 | 925-948-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | WALNUT CRK | CA |
| 2010-10-25 | 925-523-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PLEASANTON | CA |
| 2010-10-16 | 925-263-2XXX | 2000–2999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | DANVILLE | CA |
| 2010-10-14 | 925-948-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | WALNUT CRK | CA |
| 2010-10-05 | 925-331-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ANTIOCH | CA |
| 2010-10-05 | 925-435-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CONCORD | CA |
| 2010-10-05 | 925-954-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | WALNUT CRK | CA |
| 2010-09-22 | 925-243-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | LIVERMORE | CA |
| 2010-09-15 | 925-248-2XXX | 2000–2999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | DUBLN-SNRM | CA |
| 2010-09-15 | 925-310-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LAFAYETTE | CA |
| 2010-09-09 | 925-222-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | CONCORD | CA |
| 2010-09-09 | 925-605-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LIVERMORE | CA |
| 2010-09-08 | 925-666-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | ECONTRCOST | CA |
| 2010-09-07 | 925-400-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | PLEASANTON | CA |
| 2010-09-03 | 925-268-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | MORAGA | CA |
| 2010-09-03 | 925-307-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DUBLN-SNRM | CA |
| 2010-08-30 | 925-267-9XXX | 9000–9999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | PITTSBURG | CA |
| 2010-08-24 | 925-276-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CLAYTON | 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.