NumberResearchRecent thousands-block assignments
0 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, all time — NPA 657
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2020-11-17 | 657-688-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | PLACENTIA | CA |
| 2017-12-11 | 657-347-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ANAHEIM | CA |
| 2017-12-08 | 657-356-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SANTA ANA | CA |
| 2017-07-28 | 657-354-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | FULLERTON | CA |
| 2016-09-28 | 657-346-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SANTA ANA | CA |
| 2016-09-23 | 657-340-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | WESTMINSTR | CA |
| 2016-06-20 | 657-334-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | WESTMINSTR | CA |
| 2016-05-20 | 657-267-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SANTA ANA | CA |
| 2016-05-17 | 657-445-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | FULLERTON | CA |
| 2016-05-16 | 657-276-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ANAHEIM | CA |
| 2016-05-16 | 657-281-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ORANGE | CA |
| 2016-05-16 | 657-329-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | HUNTITNBCH | CA |
| 2016-05-16 | 657-329-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | HUNTITNBCH | CA |
| 2016-03-10 | 657-304-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SANTA ANA | CA |
| 2016-03-07 | 657-286-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | BREA | CA |
| 2016-02-19 | 657-258-9XXX | 9000–9999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | PLACENTIA | CA |
| 2016-02-19 | 657-296-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | GARDEN GRV | CA |
| 2016-02-19 | 657-301-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | HUNTITNBCH | CA |
| 2016-01-29 | 657-255-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | BUENA PARK | CA |
| 2016-01-29 | 657-298-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | CYPRESS | CA |
| 2015-12-21 | 657-291-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ORANGE | CA |
| 2015-12-21 | 657-363-8XXX | 8000–8999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | YORBALINDA | CA |
| 2015-12-09 | 657-289-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SANTA ANA | CA |
| 2015-10-21 | 657-257-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | WESTMINSTR | CA |
| 2015-09-17 | 657-500-8XXX | 8000–8999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | FULLERTON | CA |
| 2015-08-26 | 657-259-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | HUNTITNBCH | CA |
| 2015-08-10 | 657-284-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ORANGE | CA |
| 2015-08-04 | 657-276-9XXX | 9000–9999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ANAHEIM | CA |
| 2015-07-29 | 657-275-9XXX | 9000–9999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | PLACENTIA | CA |
| 2015-07-21 | 657-247-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SANTA ANA | CA |
| 2015-07-06 | 657-465-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | CYPRESS | CA |
| 2015-04-23 | 657-263-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | GARDEN GRV | CA |
| 2015-04-02 | 657-699-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SANTA ANA | CA |
| 2015-03-20 | 657-456-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ANAHEIM | CA |
| 2015-03-13 | 657-223-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ORANGE | CA |
| 2015-03-12 | 657-248-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | FULLERTON | CA |
| 2015-02-17 | 657-227-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | WESTMINSTR | CA |
| 2015-01-13 | 657-247-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SANTA ANA | CA |
| 2015-01-08 | 657-256-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | CYPRESS | CA |
| 2014-12-03 | 657-239-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | BUENA PARK | CA |
| 2014-11-25 | 657-258-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | PLACENTIA | CA |
| 2014-11-21 | 657-247-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SANTA ANA | CA |
| 2014-11-17 | 657-254-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ANAHEIM | CA |
| 2014-11-10 | 657-244-8XXX | 8000–8999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | HUNTITNBCH | CA |
| 2014-11-04 | 657-247-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SANTA ANA | CA |
| 2014-10-31 | 657-227-7XXX | 7000–7999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | WESTMINSTR | CA |
| 2014-10-28 | 657-282-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ORANGE | CA |
| 2014-04-14 | 657-227-8XXX | 8000–8999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | WESTMINSTR | CA |
| 2014-04-11 | 657-251-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | GARDEN GRV | CA |
| 2014-04-10 | 657-220-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | ANAHEIM | 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.