NumberResearchRecent thousands-block assignments
31 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 |
|---|---|---|---|---|---|---|---|
| 2017-05-22 | 657-354-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | FULLERTON | CA |
| 2017-05-22 | 657-358-2XXX | 2000–2999 | Assigned | METROPCS NETWORKS, LLC | 899D | SANTA ANA | CA |
| 2017-05-22 | 657-364-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | WESTMINSTR | CA |
| 2017-05-19 | 657-361-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-05-19 | 657-361-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-05-19 | 657-361-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-05-19 | 657-361-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-05-19 | 657-361-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-05-19 | 657-361-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-05-19 | 657-361-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-05-19 | 657-361-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-05-19 | 657-361-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-05-19 | 657-361-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-05-18 | 657-276-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | ANAHEIM | CA |
| 2017-05-18 | 657-325-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | BUENA PARK | CA |
| 2017-05-16 | 657-250-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | GARDEN GRV | CA |
| 2017-05-16 | 657-259-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | HUNTITNBCH | CA |
| 2017-05-16 | 657-337-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | CYPRESS | CA |
| 2017-05-16 | 657-354-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | FULLERTON | CA |
| 2017-05-15 | 657-315-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | PLACENTIA | CA |
| 2017-05-15 | 657-358-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | SANTA ANA | CA |
| 2017-04-27 | 657-358-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SANTA ANA | CA |
| 2017-04-21 | 657-354-9XXX | 9000–9999 | Assigned | METROPCS NETWORKS, LLC | 899D | FULLERTON | CA |
| 2017-04-14 | 657-352-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WESTMINSTR | CA |
| 2017-04-10 | 657-325-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BUENA PARK | CA |
| 2017-04-10 | 657-337-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CYPRESS | CA |
| 2017-04-04 | 657-356-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | SANTA ANA | CA |
| 2017-03-30 | 657-356-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2017-03-29 | 657-356-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SANTA ANA | CA |
| 2017-03-20 | 657-323-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-03-20 | 657-323-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-03-20 | 657-323-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-03-20 | 657-323-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-03-20 | 657-323-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-03-20 | 657-323-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-03-20 | 657-323-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-03-20 | 657-323-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-03-20 | 657-323-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-03-20 | 657-323-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SILVERADO | CA |
| 2017-03-20 | 657-356-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | SANTA ANA | CA |
| 2017-03-16 | 657-348-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ORANGE | CA |
| 2017-03-16 | 657-348-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ORANGE | CA |
| 2017-03-14 | 657-347-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | ANAHEIM | CA |
| 2017-03-10 | 657-345-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | YORBALINDA | CA |
| 2017-03-08 | 657-267-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SANTA ANA | CA |
| 2017-03-08 | 657-267-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | SANTA ANA | CA |
| 2017-03-08 | 657-335-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SANTA ANA | CA |
| 2017-03-08 | 657-348-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ORANGE | CA |
| 2017-02-24 | 657-327-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2017-02-24 | 657-327-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | 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.