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 |
|---|---|---|---|---|---|---|---|
| 2015-08-17 | 657-285-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-08-17 | 657-285-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-08-17 | 657-285-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-08-17 | 657-285-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-08-17 | 657-292-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-08-17 | 657-292-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-08-17 | 657-292-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-08-17 | 657-292-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-08-17 | 657-292-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-08-17 | 657-292-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-08-17 | 657-292-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-08-17 | 657-292-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-08-17 | 657-292-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-08-17 | 657-292-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-08-13 | 657-243-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FULLERTON | CA |
| 2015-08-13 | 657-248-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FULLERTON | CA |
| 2015-08-13 | 657-248-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FULLERTON | CA |
| 2015-08-13 | 657-248-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FULLERTON | CA |
| 2015-08-13 | 657-248-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FULLERTON | CA |
| 2015-08-13 | 657-248-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FULLERTON | CA |
| 2015-08-13 | 657-253-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FULLERTON | CA |
| 2015-08-13 | 657-284-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ORANGE | CA |
| 2015-08-13 | 657-284-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ORANGE | CA |
| 2015-08-12 | 657-243-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FULLERTON | CA |
| 2015-08-10 | 657-247-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | SANTA ANA | CA |
| 2015-08-10 | 657-284-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ORANGE | CA |
| 2015-08-06 | 657-284-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ORANGE | CA |
| 2015-08-06 | 657-284-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ORANGE | CA |
| 2015-08-05 | 657-271-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | WESTMINSTR | CA |
| 2015-08-05 | 657-281-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ORANGE | CA |
| 2015-08-05 | 657-281-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ORANGE | CA |
| 2015-08-04 | 657-276-9XXX | 9000–9999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ANAHEIM | CA |
| 2015-07-31 | 657-465-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CYPRESS | CA |
| 2015-07-31 | 657-465-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CYPRESS | CA |
| 2015-07-30 | 657-284-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ORANGE | CA |
| 2015-07-30 | 657-284-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ORANGE | CA |
| 2015-07-29 | 657-275-9XXX | 9000–9999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | PLACENTIA | CA |
| 2015-07-29 | 657-276-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ANAHEIM | CA |
| 2015-07-21 | 657-247-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SANTA ANA | CA |
| 2015-07-20 | 657-363-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | YORBALINDA | CA |
| 2015-07-10 | 657-249-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-07-10 | 657-249-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-07-10 | 657-249-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-07-10 | 657-249-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-07-10 | 657-249-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-07-10 | 657-249-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-07-10 | 657-249-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-07-10 | 657-249-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-07-10 | 657-249-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-07-10 | 657-249-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | 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.