NumberResearchRecent thousands-block assignments
37 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 |
|---|---|---|---|---|---|---|---|
| 2011-04-27 | 657-215-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | HUNTITNBCH | CA |
| 2011-04-27 | 657-215-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | HUNTITNBCH | CA |
| 2011-04-27 | 657-215-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | HUNTITNBCH | CA |
| 2011-04-27 | 657-222-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CYPRESS | CA |
| 2011-04-27 | 657-222-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CYPRESS | CA |
| 2011-04-27 | 657-222-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CYPRESS | CA |
| 2011-04-27 | 657-333-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ORANGE | CA |
| 2011-04-27 | 657-333-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ORANGE | CA |
| 2011-04-27 | 657-333-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ORANGE | CA |
| 2011-04-27 | 657-333-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ORANGE | CA |
| 2011-04-27 | 657-333-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ORANGE | CA |
| 2011-04-27 | 657-666-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | WESTMINSTR | CA |
| 2011-04-27 | 657-666-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | WESTMINSTR | CA |
| 2011-04-04 | 657-216-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PLACENTIA | CA |
| 2011-04-04 | 657-216-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PLACENTIA | CA |
| 2011-03-31 | 657-210-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SANTA ANA | CA |
| 2011-03-31 | 657-212-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SANTA ANA | CA |
| 2011-03-31 | 657-212-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SANTA ANA | CA |
| 2011-03-16 | 657-208-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ANAHEIM | CA |
| 2011-03-08 | 657-210-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SANTA ANA | CA |
| 2011-03-02 | 657-208-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ANAHEIM | CA |
| 2011-02-15 | 657-208-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ANAHEIM | CA |
| 2011-02-08 | 657-212-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2011-02-08 | 657-212-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2011-02-07 | 657-212-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SANTA ANA | CA |
| 2011-01-31 | 657-212-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANTA ANA | CA |
| 2011-01-25 | 657-888-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ORANGE | CA |
| 2011-01-24 | 657-222-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CYPRESS | CA |
| 2011-01-19 | 657-210-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SANTA ANA | CA |
| 2011-01-18 | 657-208-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ANAHEIM | CA |
| 2011-01-14 | 657-204-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HUNTITNBCH | CA |
| 2011-01-14 | 657-204-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HUNTITNBCH | CA |
| 2011-01-11 | 657-208-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | ANAHEIM | CA |
| 2011-01-10 | 657-201-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ANAHEIM | CA |
| 2011-01-07 | 657-222-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CYPRESS | CA |
| 2010-12-03 | 657-204-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | HUNTITNBCH | CA |
| 2010-12-03 | 657-666-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | WESTMINSTR | CA |
| 2010-11-23 | 657-215-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | HUNTITNBCH | CA |
| 2010-11-23 | 657-215-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | HUNTITNBCH | CA |
| 2010-11-23 | 657-215-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | HUNTITNBCH | CA |
| 2010-11-22 | 657-212-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SANTA ANA | CA |
| 2010-11-22 | 657-212-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SANTA ANA | CA |
| 2010-11-22 | 657-212-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SANTA ANA | CA |
| 2010-11-17 | 657-206-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | GARDEN GRV | CA |
| 2010-11-17 | 657-222-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CYPRESS | CA |
| 2010-11-17 | 657-888-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ORANGE | CA |
| 2010-11-15 | 657-666-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | WESTMINSTR | CA |
| 2010-11-11 | 657-210-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SANTA ANA | CA |
| 2010-11-11 | 657-210-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SANTA ANA | CA |
| 2010-11-11 | 657-210-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SANTA ANA | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.