NumberResearchThousands-blocks in 989-308
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 989-308 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 989 blocks
Most active assignees, all time — NPA 989
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2012-07-26 | 989-308-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | LINWOOD | MI |
| 2015-11-30 | 989-308-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF MICHIGAN, LLC - MI | 933G | LINWOOD | MI |
| 2012-09-14 | 989-308-2XXX | 2000–2999 | Assigned | ONVOY, LLCV - MI | 543C | LINWOOD | MI |
| 2016-03-02 | 989-308-3XXX | 3000–3999 | Assigned | ONVOY, LLCV - MI | 543C | LINWOOD | MI |
| 2016-03-02 | 989-308-4XXX | 4000–4999 | Assigned | ONVOY, LLCV - MI | 543C | LINWOOD | MI |
| 2024-07-12 | 989-308-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LINWOOD | MI |
| 2010-03-23 | 989-308-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | LINWOOD | MI |
| 2015-04-01 | 989-308-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LINWOOD | MI |
| 2018-08-20 | 989-308-8XXX | 8000–8999 | Assigned | ONVOY, LLCV - MI | 543C | LINWOOD | MI |
| 2023-10-23 | 989-308-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | LINWOOD | MI |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.