NumberResearchThousands-blocks in 989-283
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 989-283 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 |
|---|---|---|---|---|---|---|---|
| 2003-02-24 | 989-283-0XXX | 0000–0999 | Assigned | 123.NET, LLC | 2550 | STANTON | MI |
| 2007-02-06 | 989-283-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | STANTON | MI |
| 2007-03-21 | 989-283-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | STANTON | MI |
| 2017-04-27 | 989-283-3XXX | 3000–3999 | Assigned | ONVOY, LLCV - MI | 543C | STANTON | MI |
| 2021-01-08 | 989-283-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MI | 991E | STANTON | MI |
| 2020-05-15 | 989-283-5XXX | 5000–5999 | Assigned | ONVOY, LLCV - MI | 543C | STANTON | MI |
| 2015-04-03 | 989-283-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | STANTON | MI |
| 2013-03-26 | 989-283-7XXX | 7000–7999 | Assigned | ONVOY, LLCV - MI | 543C | STANTON | MI |
| 2006-02-10 | 989-283-8XXX | 8000–8999 | Assigned | WINN TELEPHONE COMPANY DBA WINN TELECOM - MI | 0127 | STANTON | MI |
| 2004-12-29 | 989-283-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | STANTON | 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.