NumberResearchRecent thousands-block assignments
37 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 657
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 |
|---|---|---|---|---|---|---|---|
| 2015-12-21 | 657-363-8XXX | 8000–8999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | YORBALINDA | CA |
| 2015-12-17 | 657-295-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ANAHEIM | CA |
| 2015-12-14 | 657-260-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2015-12-14 | 657-260-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2015-12-14 | 657-260-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2015-12-10 | 657-289-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SANTA ANA | CA |
| 2015-12-09 | 657-280-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2015-12-09 | 657-280-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2015-12-09 | 657-280-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2015-12-09 | 657-280-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2015-12-09 | 657-289-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SANTA ANA | CA |
| 2015-12-09 | 657-295-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | ANAHEIM | CA |
| 2015-12-09 | 657-295-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | ANAHEIM | CA |
| 2015-12-07 | 657-288-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WESTMINSTR | CA |
| 2015-12-07 | 657-288-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WESTMINSTR | CA |
| 2015-12-07 | 657-288-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WESTMINSTR | CA |
| 2015-12-07 | 657-288-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WESTMINSTR | CA |
| 2015-12-07 | 657-288-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WESTMINSTR | CA |
| 2015-12-07 | 657-324-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-12-07 | 657-324-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-12-07 | 657-324-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-12-07 | 657-324-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-12-07 | 657-324-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-12-07 | 657-324-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-12-07 | 657-324-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-12-07 | 657-324-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-12-07 | 657-324-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-12-07 | 657-324-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-12-03 | 657-277-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WESTMINSTR | CA |
| 2015-12-03 | 657-277-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WESTMINSTR | CA |
| 2015-12-03 | 657-277-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WESTMINSTR | CA |
| 2015-12-01 | 657-289-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SANTA ANA | CA |
| 2015-11-23 | 657-279-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | SANTA ANA | CA |
| 2015-11-23 | 657-279-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | SANTA ANA | CA |
| 2015-11-23 | 657-279-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | SANTA ANA | CA |
| 2015-11-23 | 657-279-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SANTA ANA | CA |
| 2015-11-23 | 657-279-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SANTA ANA | CA |
| 2015-11-23 | 657-279-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | SANTA ANA | CA |
| 2015-11-23 | 657-279-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | SANTA ANA | CA |
| 2015-11-23 | 657-279-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SANTA ANA | CA |
| 2015-11-23 | 657-279-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SANTA ANA | CA |
| 2015-11-23 | 657-279-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | SANTA ANA | CA |
| 2015-11-23 | 657-296-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | GARDEN GRV | CA |
| 2015-11-23 | 657-296-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | GARDEN GRV | CA |
| 2015-11-23 | 657-296-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | GARDEN GRV | CA |
| 2015-11-23 | 657-445-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | FULLERTON | CA |
| 2015-11-20 | 657-260-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2015-11-20 | 657-260-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2015-11-20 | 657-260-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2015-11-20 | 657-260-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | 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.