NumberResearchThousands-blocks in 734-715
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 734-715 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
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2005-04-07 | 734-715-0XXX | 0000–0999 | Assigned | ACD TELECOM, INC. - MI | 3535 | LAMBERTVL | MI |
| 2021-01-04 | 734-715-1XXX | 1000–1999 | Assigned | ONVOY, LLCV - MI | 543C | LAMBERTVL | MI |
| 2021-01-04 | 734-715-2XXX | 2000–2999 | Assigned | ONVOY, LLCV - MI | 543C | LAMBERTVL | MI |
| 2021-01-04 | 734-715-3XXX | 3000–3999 | Assigned | ONVOY, LLCV - MI | 543C | LAMBERTVL | MI |
| 2021-01-04 | 734-715-4XXX | 4000–4999 | Assigned | ONVOY, LLCV - MI | 543C | LAMBERTVL | MI |
| 2017-11-15 | 734-715-5XXX | 5000–5999 | Assigned | ONVOY, LLCV - MI | 543C | LAMBERTVL | MI |
| 2012-06-14 | 734-715-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | LAMBERTVL | MI |
| 2020-08-13 | 734-715-7XXX | 7000–7999 | Assigned | ONVOY, LLCV - MI | 543C | LAMBERTVL | MI |
| 2020-08-13 | 734-715-8XXX | 8000–8999 | Assigned | ONVOY, LLCV - MI | 543C | LAMBERTVL | MI |
| 2020-07-14 | 734-715-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | LAMBERTVL | 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.