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 214
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2014-01-29 | 214-304-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | ROCKWALL | TX |
| 2014-01-29 | 214-305-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | PROSPER | TX |
| 2014-01-29 | 214-305-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | PROSPER | TX |
| 2014-01-29 | 214-307-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | MCKINNEY | TX |
| 2014-01-29 | 214-308-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | FRISCO | TX |
| 2014-01-29 | 214-308-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | FRISCO | TX |
| 2014-01-24 | 214-974-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | SEAGOVILLE | TX |
| 2008-03-19 | 214-272-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | DALLAS | TX |
| 2007-05-31 | 214-407-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | FRISCO | TX |
| 2007-05-31 | 214-548-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | MCKINNEY | TX |
| 2007-04-24 | 214-772-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | DALLAS | TX |
| 2007-02-21 | 214-506-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | SEAGOVILLE | TX |
| 2004-06-01 | 214-242-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | DALLAS | TX |
| 2003-12-09 | 214-592-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | MCKINNEY | TX |
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.