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 |
|---|---|---|---|---|---|---|---|
| 2014-02-25 | 707-617-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | FORTUNA | CA |
| 2014-02-11 | 707-607-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | FERNDALE | CA |
| 2014-02-11 | 707-630-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | ARCATA | CA |
| 2014-02-11 | 707-630-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | ARCATA | CA |
| 2014-02-11 | 707-630-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | ARCATA | CA |
| 2014-02-11 | 707-686-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | LOLETA | CA |
| 2014-02-11 | 707-783-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | RIO DELL | CA |
| 2014-02-11 | 707-844-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | BLUE LAKE | CA |
| 2014-02-11 | 707-851-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | HYDESVILLE | CA |
| 2014-02-03 | 707-677-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | TRINIDAD | CA |
| 2013-11-04 | 707-798-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | EUREKA | CA |
| 2013-11-04 | 707-798-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | EUREKA | CA |
| 2013-11-04 | 707-798-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | EUREKA | CA |
| 2013-11-04 | 707-798-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | EUREKA | CA |
| 2013-11-04 | 707-798-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | EUREKA | CA |
| 2013-11-04 | 707-798-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | EUREKA | CA |
| 2009-08-27 | 707-407-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | EUREKA | CA |
| 2009-08-27 | 707-407-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | EUREKA | CA |
| 2006-09-14 | 707-497-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | EUREKA | CA |
| 2006-09-14 | 707-506-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | RIO DELL | CA |
| 2006-09-14 | 707-633-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | ARCATA | CA |
| 2006-09-14 | 707-633-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | ARCATA | CA |
| 2006-09-14 | 707-667-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | BLUE LAKE | CA |
| 2006-09-14 | 707-677-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | TRINIDAD | CA |
| 2006-09-14 | 707-682-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | FORTUNA | CA |
| 2006-09-14 | 707-733-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | LOLETA | CA |
| 2006-09-14 | 707-768-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | HYDESVILLE | CA |
| 2006-09-14 | 707-786-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | FERNDALE | 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.