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 707
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2008-08-18 | 707-624-1XXX | 1000–1999 | Assigned | PACIFIC BELL | 9740 | VACAVILLE | CA |
| 2008-05-23 | 707-646-3XXX | 3000–3999 | Assigned | PACIFIC BELL | 9740 | FRFLD-SUIS | CA |
| 2008-05-23 | 707-646-5XXX | 5000–5999 | Assigned | PACIFIC BELL | 9740 | FRFLD-SUIS | CA |
| 2008-05-15 | 707-624-7XXX | 7000–7999 | Assigned | PACIFIC BELL | 9740 | VACAVILLE | CA |
| 2008-05-15 | 707-624-8XXX | 8000–8999 | Assigned | PACIFIC BELL | 9740 | VACAVILLE | CA |
| 2008-05-15 | 707-646-4XXX | 4000–4999 | Assigned | PACIFIC BELL | 9740 | FRFLD-SUIS | CA |
| 2008-03-19 | 707-624-2XXX | 2000–2999 | Assigned | PACIFIC BELL | 9740 | VACAVILLE | CA |
| 2008-03-19 | 707-624-3XXX | 3000–3999 | Assigned | PACIFIC BELL | 9740 | VACAVILLE | CA |
| 2008-03-19 | 707-624-4XXX | 4000–4999 | Assigned | PACIFIC BELL | 9740 | VACAVILLE | CA |
| 2007-03-30 | 707-393-2XXX | 2000–2999 | Assigned | PACIFIC BELL | 9740 | SANTA ROSA | CA |
| 2007-03-30 | 707-393-3XXX | 3000–3999 | Assigned | PACIFIC BELL | 9740 | SANTA ROSA | CA |
| 2007-03-30 | 707-393-4XXX | 4000–4999 | Assigned | PACIFIC BELL | 9740 | SANTA ROSA | CA |
| 2007-03-30 | 707-393-5XXX | 5000–5999 | Assigned | PACIFIC BELL | 9740 | SANTA ROSA | CA |
| 2007-03-30 | 707-393-6XXX | 6000–6999 | Assigned | PACIFIC BELL | 9740 | SANTA ROSA | 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.