NumberResearchRecent thousands-block assignments
0 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, all time — NPA 657
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-03-18 | 657-742-3XXX | 3000–3999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | HUNTITNBCH | CA |
| 2022-03-14 | 657-530-0XXX | 0000–0999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | BREA | CA |
| 2022-02-21 | 657-686-3XXX | 3000–3999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | GARDEN GRV | CA |
| 2022-01-19 | 657-652-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | ANAHEIM | CA |
| 2022-01-14 | 657-626-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | PLACENTIA | CA |
| 2022-01-12 | 657-832-4XXX | 4000–4999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | SILVERADO | CA |
| 2022-01-11 | 657-693-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | SANTA ANA | CA |
| 2022-01-11 | 657-746-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | WESTMINSTR | CA |
| 2022-01-11 | 657-767-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | FULLERTON | CA |
| 2022-01-10 | 657-837-4XXX | 4000–4999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | BUENA PARK | CA |
| 2021-05-28 | 657-822-5XXX | 5000–5999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | ORANGE | 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.