NumberResearchThousands-blocks in 304-900
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 304-900 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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2010-06-23 | 304-900-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WV | 080F | FAYETTEVL | WV |
| 2010-03-15 | 304-900-1XXX | 1000–1999 | Assigned | SHENTEL COMMUNICATIONS, LLC. - WV | 489F | FAYETTEVL | WV |
| 2010-09-20 | 304-900-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - WV | 080F | FAYETTEVL | WV |
| 2011-05-23 | 304-900-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - WV | 080F | FAYETTEVL | WV |
| 2011-11-23 | 304-900-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FAYETTEVL | WV |
| 2014-01-21 | 304-900-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | FAYETTEVL | WV |
| 2014-07-16 | 304-900-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - WV | 080F | FAYETTEVL | WV |
| 2017-01-05 | 304-900-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - WV | 077G | FAYETTEVL | WV |
| 2018-07-31 | 304-900-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - WV | 6284 | FAYETTEVL | WV |
| — | 304-900-9XXX | 9000–9999 | Available | FAYETTEVL | 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.