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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-01-19 | 657-706-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FULLERTON | CA |
| 2024-01-19 | 657-706-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FULLERTON | CA |
| 2024-01-19 | 657-706-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FULLERTON | CA |
| 2024-01-19 | 657-708-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PLACENTIA | CA |
| 2024-01-11 | 657-678-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ANAHEIM | CA |
| 2024-01-11 | 657-712-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ANAHEIM | CA |
| 2024-01-11 | 657-712-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ANAHEIM | CA |
| 2024-01-11 | 657-712-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ANAHEIM | CA |
| 2024-01-11 | 657-712-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | ANAHEIM | CA |
| 2024-01-11 | 657-712-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ANAHEIM | CA |
| 2024-01-11 | 657-712-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ANAHEIM | CA |
| 2024-01-11 | 657-712-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | ANAHEIM | CA |
| 2024-01-11 | 657-712-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ANAHEIM | CA |
| 2024-01-11 | 657-712-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ANAHEIM | CA |
| 2024-01-10 | 657-663-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | BUENA PARK | CA |
| 2024-01-10 | 657-671-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | BREA | CA |
| 2024-01-08 | 657-706-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FULLERTON | CA |
| 2024-01-08 | 657-706-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FULLERTON | CA |
| 2024-01-03 | 657-632-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FULLERTON | CA |
| 2023-12-29 | 657-605-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | ORANGE | CA |
| 2023-12-29 | 657-605-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | ORANGE | CA |
| 2023-12-29 | 657-705-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | CYPRESS | CA |
| 2023-12-29 | 657-705-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | CYPRESS | CA |
| 2023-12-29 | 657-706-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | FULLERTON | CA |
| 2023-12-29 | 657-706-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | FULLERTON | CA |
| 2023-12-29 | 657-713-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | SANTA ANA | CA |
| 2023-12-29 | 657-713-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | SANTA ANA | CA |
| 2023-12-29 | 657-713-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | SANTA ANA | CA |
| 2023-12-29 | 657-713-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | SANTA ANA | CA |
| 2023-12-29 | 657-713-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | SANTA ANA | CA |
| 2023-12-29 | 657-713-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | SANTA ANA | CA |
| 2023-12-27 | 657-715-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2023-12-27 | 657-715-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2023-12-27 | 657-715-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2023-12-27 | 657-715-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2023-12-27 | 657-715-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2023-12-27 | 657-715-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2023-12-15 | 657-712-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | ANAHEIM | CA |
| 2023-12-11 | 657-671-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BREA | CA |
| 2023-12-05 | 657-663-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BUENA PARK | CA |
| 2023-12-05 | 657-698-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | WESTMINSTR | CA |
| 2023-12-05 | 657-698-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | WESTMINSTR | CA |
| 2023-12-05 | 657-701-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | GARDEN GRV | CA |
| 2023-12-05 | 657-701-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | GARDEN GRV | CA |
| 2023-12-05 | 657-705-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CYPRESS | CA |
| 2023-12-05 | 657-710-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | GARDEN GRV | CA |
| 2023-12-05 | 657-710-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | GARDEN GRV | CA |
| 2023-12-05 | 657-710-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | GARDEN GRV | CA |
| 2023-12-04 | 657-709-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SANTA ANA | CA |
| 2023-12-04 | 657-709-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SANTA ANA | 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.