NumberResearchThousands-blocks in 734-743
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 734-743 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 |
|---|---|---|---|---|---|---|---|
| — | 734-743-0XXX | 0000–0999 | Available | LIVONIA | MI | ||
| 2009-02-05 | 734-743-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | LIVONIA | MI |
| 2014-08-20 | 734-743-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | LIVONIA | MI |
| 2014-09-15 | 734-743-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | LIVONIA | MI |
| 2014-08-28 | 734-743-4XXX | 4000–4999 | Assigned | TELNET WORLDWIDE, INC. | 817J | LIVONIA | MI |
| 2011-06-27 | 734-743-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LIVONIA | MI |
| — | 734-743-6XXX | 6000–6999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | LIVONIA | MI |
| — | 734-743-7XXX | 7000–7999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | LIVONIA | MI |
| 2016-04-11 | 734-743-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | LIVONIA | MI |
| 2021-10-18 | 734-743-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LIVONIA | 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.