NumberResearchThousands-blocks in 734-607
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 734-607 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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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 734-607-0XXX | 0000–0999 | Assigned (pending) | MI | |||
| 2006-11-08 | 734-607-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | LAMBERTVL | MI |
| 2021-06-17 | 734-607-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF MICHIGAN, LLC - MI | 933G | LAMBERTVL | MI |
| — | 734-607-3XXX | 3000–3999 | Available | LAMBERTVL | MI | ||
| 2023-05-05 | 734-607-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | LAMBERTVL | MI |
| 2021-11-02 | 734-607-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LAMBERTVL | MI |
| 2015-12-02 | 734-607-6XXX | 6000–6999 | Assigned | ONVOY, LLCV - MI | 543C | LAMBERTVL | MI |
| 2015-12-02 | 734-607-7XXX | 7000–7999 | Assigned | ONVOY, LLCV - MI | 543C | LAMBERTVL | MI |
| 2021-05-17 | 734-607-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LAMBERTVL | MI |
| 2021-11-02 | 734-607-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LAMBERTVL | MI |
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.