NumberResearchThousands-blocks in 734-317
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 734-317 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 |
|---|---|---|---|---|---|---|---|
| — | 734-317-0XXX | 0000–0999 | Reserved | TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | ERIE | MI |
| 2003-01-02 | 734-317-1XXX | 1000–1999 | Assigned | 123.NET, LLC | 2550 | ERIE | MI |
| 2005-04-07 | 734-317-2XXX | 2000–2999 | Assigned | ACD TELECOM, INC. - MI | 3535 | ERIE | MI |
| 2005-06-21 | 734-317-3XXX | 3000–3999 | Assigned | ONVOY, LLCV - MI | 543C | ERIE | MI |
| 2025-04-14 | 734-317-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ERIE | MI |
| 2014-11-13 | 734-317-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | ERIE | MI |
| 2014-11-13 | 734-317-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | ERIE | MI |
| 2007-01-17 | 734-317-7XXX | 7000–7999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ERIE | MI |
| — | 734-317-8XXX | 8000–8999 | Available | ERIE | MI | ||
| 2014-11-13 | 734-317-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | ERIE | 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.