NumberResearchThousands-blocks in 616-483
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 616-483 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 616 blocks
Most active assignees, all time — NPA 616
New assignments by month
Sep 2026
Aug 2026
Jul 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2018-09-24 | 616-483-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | DUTTON | MI |
| 2018-11-29 | 616-483-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF MICHIGAN, LLC - MI | 933G | DUTTON | MI |
| 2021-05-20 | 616-483-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DUTTON | MI |
| 2021-01-05 | 616-483-3XXX | 3000–3999 | Assigned | ONVOY, LLCV - MI | 543C | DUTTON | MI |
| 2021-01-05 | 616-483-4XXX | 4000–4999 | Assigned | ONVOY, LLCV - MI | 543C | DUTTON | MI |
| — | 616-483-5XXX | 5000–5999 | Available | DUTTON | MI | ||
| 2021-10-18 | 616-483-6XXX | 6000–6999 | Assigned | ONVOY, LLCV - MI | 543C | DUTTON | MI |
| 2021-10-18 | 616-483-7XXX | 7000–7999 | Assigned | ONVOY, LLCV - MI | 543C | DUTTON | MI |
| 2021-05-24 | 616-483-8XXX | 8000–8999 | Assigned | STRATUS NETWORKS | 495J | DUTTON | MI |
| 2023-05-16 | 616-483-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7157 | DUTTON | 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.