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
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-06-25 | 304-931-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | CLARKSBURG | WV |
| 2014-01-29 | 304-439-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | BUCKHANNON | WV |
| 2014-01-29 | 304-439-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | BUCKHANNON | WV |
| 2014-01-29 | 304-608-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | BRIDGEPORT | WV |
| 2014-01-23 | 304-200-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | WILLIAMSTN | WV |
| 2014-01-23 | 304-236-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | WILLIAMSON | WV |
| 2014-01-23 | 304-272-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | WAYNE | WV |
| 2014-01-23 | 304-301-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | ATHENS | WV |
| 2014-01-23 | 304-315-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | ROCK CAVE | WV |
| 2014-01-23 | 304-317-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | PADEN CITY | WV |
| 2014-01-23 | 304-371-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | SHINNSTON | WV |
| 2014-01-23 | 304-398-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | NEWMRTNSVL | WV |
| 2014-01-23 | 304-401-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | SISTERSVL | WV |
| 2014-01-23 | 304-464-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | VALLEY ML | WV |
| 2014-01-23 | 304-467-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | MATOAKA | WV |
| 2014-01-23 | 304-512-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | RAVENSWOOD | WV |
| 2014-01-23 | 304-514-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | RIPLEY | WV |
| 2014-01-23 | 304-519-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | SPENCER | WV |
| 2014-01-23 | 304-745-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | W MILFORD | WV |
| 2014-01-23 | 304-753-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | PETERSTOWN | WV |
| 2014-01-23 | 304-806-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | LUMBERPORT | WV |
| 2014-01-23 | 304-837-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | SETH | WV |
| 2014-01-23 | 304-857-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | PTPLEASANT | WV |
| 2014-01-23 | 304-861-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | PRKRSBGZN3 | WV |
| 2014-01-23 | 304-917-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | PRKRSBGZN1 | WV |
| 2014-01-23 | 304-956-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | WHSLPHRSPG | WV |
| 2014-01-22 | 304-307-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | MADISON | WV |
| 2014-01-22 | 304-309-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | HINTON | WV |
| 2014-01-22 | 304-390-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | MILTON | WV |
| 2014-01-22 | 304-390-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | MILTON | WV |
| 2014-01-22 | 304-524-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | GRIFITHSVL | WV |
| 2014-01-22 | 304-632-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | GAULEY BDG | WV |
| 2014-01-22 | 304-773-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | MASON | WV |
| 2014-01-22 | 304-896-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | LOGAN | WV |
| 2014-01-22 | 304-896-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | LOGAN | WV |
| 2014-01-22 | 304-928-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | LOGAN | WV |
| 2014-01-22 | 304-948-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | HNTNGTNZN2 | WV |
| 2014-01-22 | 304-953-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | LOGAN | WV |
| 2014-01-22 | 304-981-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | MONTGOMERY | WV |
| 2014-01-21 | 304-223-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | FLAT TOP | WV |
| 2014-01-21 | 304-587-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | CLAY | WV |
| 2014-01-21 | 304-648-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | FORT GAY | WV |
| 2014-01-21 | 304-900-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | FAYETTEVL | WV |
| 2014-01-17 | 304-220-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | CHRLSTNZN4 | WV |
| 2014-01-17 | 304-306-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | CHRLSTNZN7 | WV |
| 2014-01-17 | 304-306-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | CHRLSTNZN7 | WV |
| 2014-01-17 | 304-729-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | CHRLSTNZN5 | WV |
| 2014-01-17 | 304-729-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | CHRLSTNZN5 | WV |
| 2014-01-17 | 304-935-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | CHRLSTNZN3 | WV |
| 2014-01-17 | 304-984-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | CHRLSTNZN2 | 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.