NumberResearchThousands-blocks in 616-263
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 616-263 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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 616-263-0XXX | 0000–0999 | Reserved | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CEDAR SPG | MI |
| 2011-01-24 | 616-263-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | CEDAR SPG | MI |
| 2006-09-15 | 616-263-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | CEDAR SPG | MI |
| 2004-08-17 | 616-263-3XXX | 3000–3999 | Assigned | ACD TELECOM, INC. - MI | 3535 | CEDAR SPG | MI |
| 2003-12-30 | 616-263-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | CEDAR SPG | MI |
| 2008-11-04 | 616-263-5XXX | 5000–5999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | CEDAR SPG | MI |
| 2014-08-14 | 616-263-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | CEDAR SPG | MI |
| 2009-08-27 | 616-263-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CEDAR SPG | MI |
| 2006-09-26 | 616-263-8XXX | 8000–8999 | Assigned | 123.NET, LLC | 2550 | CEDAR SPG | MI |
| 2007-01-17 | 616-263-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CEDAR SPG | 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.