NumberResearchThousands-blocks in 734-508
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 734-508 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 734 blocks
Most active assignees, all time — NPA 734
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 734-508-0XXX | 0000–0999 | Available | MILAN | MI | ||
| 2021-06-17 | 734-508-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF MICHIGAN, LLC - MI | 933G | MILAN | MI |
| 2014-01-27 | 734-508-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | MILAN | MI |
| 2005-12-06 | 734-508-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | MILAN | MI |
| 2004-01-13 | 734-508-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | MILAN | MI |
| 2012-06-25 | 734-508-5XXX | 5000–5999 | Assigned | ONVOY, LLCV - MI | 543C | MILAN | MI |
| 2003-12-11 | 734-508-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | MILAN | MI |
| 2006-02-06 | 734-508-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MILAN | MI |
| 2020-01-09 | 734-508-8XXX | 8000–8999 | Assigned | ONVOY, LLCV - MI | 543C | MILAN | MI |
| — | 734-508-9XXX | 9000–9999 | Reserved | TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | MILAN | MI |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.