NumberResearchThousands-blocks in 616-552
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 616-552 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
Jun 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2013-08-01 | 616-552-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7157 | GRAND RPDS | MI |
| 2015-08-13 | 616-552-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | GRAND RPDS | MI |
| 2014-09-02 | 616-552-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | GRAND RPDS | MI |
| 2014-09-02 | 616-552-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | GRAND RPDS | MI |
| 2015-06-30 | 616-552-4XXX | 4000–4999 | Assigned | ONVOY, LLCV - MI | 543C | GRAND RPDS | MI |
| 2013-11-06 | 616-552-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | GRAND RPDS | MI |
| 2013-10-18 | 616-552-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | GRAND RPDS | MI |
| 2013-11-06 | 616-552-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | GRAND RPDS | MI |
| 2015-04-24 | 616-552-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | GRAND RPDS | MI |
| 2016-07-26 | 616-552-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | GRAND RPDS | 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.