NumberResearchThousands-blocks in 989-291
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 989-291 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 |
|---|---|---|---|---|---|---|---|
| — | 989-291-0XXX | 0000–0999 | Reserved | FRONTIER NORTH, INC. - MI | 0695 | SHERIDAN | MI |
| 2025-06-16 | 989-291-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SHERIDAN | MI |
| 2005-08-05 | 989-291-2XXX | 2000–2999 | Assigned | 123.NET, LLC | 2550 | SHERIDAN | MI |
| — | 989-291-3XXX | 3000–3999 | Reserved | FRONTIER NORTH, INC. - MI | 0695 | SHERIDAN | MI |
| 2006-04-27 | 989-291-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | SHERIDAN | MI |
| — | 989-291-5XXX | 5000–5999 | Reserved | FRONTIER NORTH, INC. - MI | 0695 | SHERIDAN | MI |
| 2007-02-06 | 989-291-6XXX | 6000–6999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | SHERIDAN | MI |
| 2009-08-27 | 989-291-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SHERIDAN | MI |
| 2014-06-13 | 989-291-8XXX | 8000–8999 | Assigned | DAYSTARR LLC DBA DAYSTARR COMMUNICATIONS | 993L | SHERIDAN | MI |
| 2026-04-07 | 989-291-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SHERIDAN | 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.