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 740
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 |
|---|---|---|---|---|---|---|---|
| 2024-03-15 | 740-435-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | CAMBRIDGE | OH |
| 2024-02-28 | 740-799-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | QUAKERCITY | OH |
| 2014-02-11 | 740-860-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | BELPRE | OH |
| 2014-01-31 | 740-208-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | GALLIPOLIS | OH |
| 2014-01-31 | 740-367-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | CHESHIRE | OH |
| 2014-01-31 | 740-896-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | LOWELL | OH |
| 2013-11-15 | 740-371-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | MARIETTA | OH |
| 2013-11-15 | 740-371-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | MARIETTA | OH |
| 2013-11-06 | 740-691-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | POMEROY | OH |
| 2013-11-06 | 740-691-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | POMEROY | OH |
| 2011-03-21 | 740-336-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | MARIETTA | OH |
| 2008-10-08 | 740-428-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | CHESHIRE | OH |
| 2006-09-06 | 740-315-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | BELPRE | OH |
| 2006-09-06 | 740-434-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | MARIETTA | OH |
| 2006-09-06 | 740-444-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | POMEROY | OH |
| 2006-09-06 | 740-578-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | GALLIPOLIS | OH |
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.