NumberResearchThousands-blocks in 765-551
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 765-551 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 765 blocks
Most active assignees, all time — NPA 765
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 765-551-0XXX | 0000–0999 | Reserved | LEVEL 3 TELECOM OF INDIANA, LP - IN | 7060 | ELWOOD | IN |
| 2006-05-09 | 765-551-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | ELWOOD | IN |
| 2009-09-02 | 765-551-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ELWOOD | IN |
| 2005-08-19 | 765-551-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | ELWOOD | IN |
| 2004-03-17 | 765-551-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | ELWOOD | IN |
| — | 765-551-5XXX | 5000–5999 | Reserved | LEVEL 3 TELECOM OF INDIANA, LP - IN | 7060 | ELWOOD | IN |
| 2013-04-03 | 765-551-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF INDIANA, LLC - IN | 279F | ELWOOD | IN |
| 2009-01-14 | 765-551-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - IN | 105F | ELWOOD | IN |
| 2009-10-20 | 765-551-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ELWOOD | IN |
| 2012-06-18 | 765-551-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - IN | 105F | ELWOOD | IN |
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.