NumberResearchThousands-blocks in 304-441
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 304-441 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
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2011-12-19 | 304-441-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WV | 080F | KINGWOOD | WV |
| 2011-07-13 | 304-441-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - WV | 6284 | KINGWOOD | WV |
| 2008-06-04 | 304-441-2XXX | 2000–2999 | Assigned | IDT AMERICA, CORP. - WV | 317C | KINGWOOD | WV |
| 2009-02-13 | 304-441-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | KINGWOOD | WV |
| 2014-02-26 | 304-441-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - WV | 6284 | KINGWOOD | WV |
| 2014-07-22 | 304-441-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - WV | 080F | KINGWOOD | WV |
| 2018-10-01 | 304-441-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | KINGWOOD | WV |
| 2015-09-04 | 304-441-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - WV | 080F | KINGWOOD | WV |
| 2016-06-29 | 304-441-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | KINGWOOD | WV |
| 2013-07-30 | 304-441-9XXX | 9000–9999 | Assigned | CORETEL WEST VIRGINIA, INC. - WV | 5833 | KINGWOOD | 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.