NumberResearchThousands-blocks in 330-435
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 330-435 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 330 blocks
Most active assignees, all time — NPA 330
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 330-435-0XXX | 0000–0999 | Reserved | FRONTIER NORTH, INC. - OH | 0615 | CRESTON | OH |
| — | 330-435-1XXX | 1000–1999 | Reserved | FRONTIER NORTH, INC. - OH | 0615 | CRESTON | OH |
| 2004-09-20 | 330-435-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | CRESTON | OH |
| 2005-06-07 | 330-435-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | CRESTON | OH |
| — | 330-435-4XXX | 4000–4999 | Reserved | FRONTIER NORTH, INC. - OH | 0615 | CRESTON | OH |
| 2011-07-12 | 330-435-5XXX | 5000–5999 | Assigned | SUPER-NET, INC. - OH | 155F | CRESTON | OH |
| — | 330-435-6XXX | 6000–6999 | Reserved | FRONTIER NORTH, INC. - OH | 0615 | CRESTON | OH |
| 2008-05-01 | 330-435-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | CRESTON | OH |
| 2013-10-29 | 330-435-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF OHIO, LLC - OH | 284F | CRESTON | OH |
| 2022-03-14 | 330-435-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CRESTON | OH |
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.