NumberResearchThousands-blocks in 304-937
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 304-937 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 304 blocks
Most active assignees, all time — NPA 304
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2004-10-21 | 304-937-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WV | 9944 | BUFFALO | WV |
| 2021-02-08 | 304-937-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | BUFFALO | WV |
| — | 304-937-2XXX | 2000–2999 | Reserved | FRONTIER WEST VIRGINIA INC. | 9214 | BUFFALO | WV |
| — | 304-937-3XXX | 3000–3999 | Reserved | FRONTIER WEST VIRGINIA INC. | 9214 | BUFFALO | WV |
| — | 304-937-4XXX | 4000–4999 | Reserved | FRONTIER WEST VIRGINIA INC. | 9214 | BUFFALO | WV |
| 2013-08-08 | 304-937-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WV | 9944 | BUFFALO | WV |
| 2004-03-08 | 304-937-6XXX | 6000–6999 | Assigned | CITYNET WEST VIRGINIA, LLC - WV | 545B | BUFFALO | WV |
| — | 304-937-7XXX | 7000–7999 | Reserved | FRONTIER WEST VIRGINIA INC. | 9214 | BUFFALO | WV |
| 2019-04-09 | 304-937-8XXX | 8000–8999 | Assigned | CORETEL WEST VIRGINIA, INC. - WV | 5833 | BUFFALO | WV |
| 2021-06-28 | 304-937-9XXX | 9000–9999 | Assigned | ONVOY, LLC - WV | 449F | BUFFALO | 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.