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 304
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-01-18 | 304-716-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | PRINCETON | WV |
| 2024-01-18 | 304-913-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | PRINCETON | WV |
| 2024-01-18 | 304-913-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | PRINCETON | WV |
| 2024-01-18 | 304-913-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | PRINCETON | WV |
| 2023-07-19 | 304-921-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | BLUEFIELD | WV |
| 2023-04-12 | 304-961-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | PRINCETON | WV |
| 2022-08-29 | 304-955-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | HNTNGTNZN2 | WV |
| 2022-07-21 | 304-560-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | LOGAN | WV |
| 2021-09-17 | 304-903-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | GRAFTON | WV |
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.