NumberResearchThousands-blocks in 740-546
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 740-546 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 740 blocks
Most active assignees, all time — NPA 740
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 740-546-0XXX | 0000–0999 | Available | ADENA | OH | ||
| 2026-02-18 | 740-546-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ADENA | OH |
| 2005-04-01 | 740-546-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | ADENA | OH |
| — | 740-546-3XXX | 3000–3999 | Reserved | FRONTIER NORTH, INC. - OH | 0615 | ADENA | OH |
| — | 740-546-4XXX | 4000–4999 | Reserved | FRONTIER NORTH, INC. - OH | 0615 | ADENA | OH |
| 2015-04-22 | 740-546-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | ADENA | OH |
| 2021-08-11 | 740-546-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | ADENA | OH |
| 2014-06-09 | 740-546-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | ADENA | OH |
| — | 740-546-8XXX | 8000–8999 | Available | ADENA | OH | ||
| — | 740-546-9XXX | 9000–9999 | Available | ADENA | 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.