NumberResearchThousands-blocks in 616-678
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 616-678 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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2004-08-23 | 616-678-0XXX | 0000–0999 | Assigned | ACD TELECOM, INC. - MI | 3535 | KENT CITY | MI |
| 2004-12-14 | 616-678-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KENT CITY | MI |
| 2004-06-22 | 616-678-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | KENT CITY | MI |
| 2005-12-01 | 616-678-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | KENT CITY | MI |
| — | 616-678-4XXX | 4000–4999 | Reserved | MICHIGAN BELL TEL CO | 9323 | KENT CITY | MI |
| — | 616-678-5XXX | 5000–5999 | Reserved | MICHIGAN BELL TEL CO | 9323 | KENT CITY | MI |
| 2016-03-09 | 616-678-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | KENT CITY | MI |
| — | 616-678-7XXX | 7000–7999 | Reserved | MICHIGAN BELL TEL CO | 9323 | KENT CITY | MI |
| 2004-01-29 | 616-678-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | KENT CITY | MI |
| — | 616-678-9XXX | 9000–9999 | Available | KENT CITY | 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.