NumberResearchThousands-blocks in 740-519
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 740-519 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
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2004-03-08 | 740-519-0XXX | 0000–0999 | Assigned | PAETEC ITEL, LLC | 829J | CLARINGTON | OH |
| 2017-07-20 | 740-519-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | CLARINGTON | OH |
| — | 740-519-2XXX | 2000–2999 | Available | CLARINGTON | OH | ||
| — | 740-519-3XXX | 3000–3999 | Available | CLARINGTON | OH | ||
| 2010-12-02 | 740-519-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CLARINGTON | OH |
| 2022-02-01 | 740-519-5XXX | 5000–5999 | Assigned | ONVOY, LLC - OH | 464C | CLARINGTON | OH |
| — | 740-519-6XXX | 6000–6999 | Available | CLARINGTON | OH | ||
| 2014-06-05 | 740-519-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CLARINGTON | OH |
| 2015-07-16 | 740-519-8XXX | 8000–8999 | Assigned | ONVOY, LLC - OH | 464C | CLARINGTON | OH |
| 2013-09-23 | 740-519-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF OHIO, LLC - OH | 284F | CLARINGTON | 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.