NumberResearchRecent thousands-block assignments
31 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/22/2026
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 |
|---|---|---|---|---|---|---|---|
| 2021-12-17 | 657-534-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | ORANGE | CA |
| 2021-12-10 | 657-537-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | SILVERADO | CA |
| 2021-12-08 | 657-514-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | BUENA PARK | CA |
| 2021-12-07 | 657-556-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CYPRESS | CA |
| 2021-12-06 | 657-535-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | YORBALINDA | CA |
| 2021-12-06 | 657-535-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | YORBALINDA | CA |
| 2021-11-22 | 657-518-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2021-11-22 | 657-518-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2021-11-22 | 657-518-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2021-11-22 | 657-518-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2021-11-22 | 657-518-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2021-11-22 | 657-518-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2021-11-22 | 657-518-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2021-11-22 | 657-518-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2021-11-22 | 657-518-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2021-11-22 | 657-518-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2021-11-22 | 657-531-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2021-11-22 | 657-531-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2021-11-22 | 657-531-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2021-11-22 | 657-551-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WESTMINSTR | CA |
| 2021-11-22 | 657-551-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WESTMINSTR | CA |
| 2021-11-22 | 657-551-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | WESTMINSTR | CA |
| 2021-11-22 | 657-551-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | WESTMINSTR | CA |
| 2021-11-22 | 657-551-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | WESTMINSTR | CA |
| 2021-11-22 | 657-551-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | WESTMINSTR | CA |
| 2021-11-22 | 657-551-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WESTMINSTR | CA |
| 2021-11-22 | 657-553-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2021-11-22 | 657-553-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2021-11-22 | 657-553-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2021-11-22 | 657-553-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2021-11-22 | 657-553-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2021-11-22 | 657-553-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2021-11-22 | 657-553-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2021-11-22 | 657-553-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2021-11-22 | 657-739-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2021-11-22 | 657-739-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2021-11-21 | 657-530-7XXX | 7000–7999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | BREA | CA |
| 2021-11-18 | 657-523-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | GARDEN GRV | CA |
| 2021-11-18 | 657-523-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | GARDEN GRV | CA |
| 2021-11-18 | 657-523-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | GARDEN GRV | CA |
| 2021-11-18 | 657-556-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CYPRESS | CA |
| 2021-11-17 | 657-530-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | BREA | CA |
| 2021-11-17 | 657-534-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ORANGE | CA |
| 2021-11-15 | 657-541-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2021-11-15 | 657-541-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2021-11-15 | 657-541-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2021-11-15 | 657-541-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2021-11-15 | 657-541-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2021-11-15 | 657-541-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2021-11-15 | 657-541-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.