NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/23/2026
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 |
|---|---|---|---|---|---|---|---|
| 2012-03-12 | 304-568-8XXX | 8000–8999 | Assigned | IDT AMERICA, CORP. - WV | 317C | TUNNELTON | WV |
| 2008-06-04 | 304-441-2XXX | 2000–2999 | Assigned | IDT AMERICA, CORP. - WV | 317C | KINGWOOD | WV |
| 2008-06-04 | 304-789-1XXX | 1000–1999 | Assigned | IDT AMERICA, CORP. - WV | 317C | TERRA ALTA | WV |
| 2008-06-04 | 304-892-7XXX | 7000–7999 | Assigned | IDT AMERICA, CORP. - WV | 317C | NEWBURG | WV |
| 2008-06-02 | 304-777-5XXX | 5000–5999 | Assigned | IDT AMERICA, CORP. - WV | 317C | CHEAT LAKE | WV |
| 2008-05-16 | 304-359-2XXX | 2000–2999 | Assigned | IDT AMERICA, CORP. - WV | 317C | ROMNEY | WV |
| 2008-04-29 | 304-974-2XXX | 2000–2999 | Assigned | IDT AMERICA, CORP. - WV | 317C | MORGANTOWN | WV |
| 2006-02-13 | 304-738-4XXX | 4000–4999 | Assigned | IDT AMERICA, CORP. - WV | 317C | RIDGELEY | WV |
| 2006-02-13 | 304-790-8XXX | 8000–8999 | Assigned | IDT AMERICA, CORP. - WV | 317C | KEYSER | WV |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.