NumberResearchThousands-blocks in 734-348
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 734-348 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 |
|---|---|---|---|---|---|---|---|
| — | 734-348-0XXX | 0000–0999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | FLAT ROCK | MI |
| — | 734-348-1XXX | 1000–1999 | Available | FLAT ROCK | MI | ||
| 2021-11-02 | 734-348-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FLAT ROCK | MI |
| — | 734-348-3XXX | 3000–3999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | FLAT ROCK | MI |
| 2023-01-17 | 734-348-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | FLAT ROCK | MI |
| 2005-01-20 | 734-348-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | FLAT ROCK | MI |
| 2005-06-09 | 734-348-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | FLAT ROCK | MI |
| 2007-01-17 | 734-348-7XXX | 7000–7999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | FLAT ROCK | MI |
| 2023-06-05 | 734-348-8XXX | 8000–8999 | Assigned | ONVOY, LLCV - MI | 543C | FLAT ROCK | MI |
| — | 734-348-9XXX | 9000–9999 | Available | FLAT ROCK | 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.