NumberResearchThousands-blocks in 989-634
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 989-634 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
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 989-634-0XXX | 0000–0999 | Available | BANCROFT | MI | ||
| 2004-10-18 | 989-634-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | BANCROFT | MI |
| 2007-03-21 | 989-634-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | BANCROFT | MI |
| 2007-02-06 | 989-634-3XXX | 3000–3999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | BANCROFT | MI |
| 2015-10-30 | 989-634-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | BANCROFT | MI |
| — | 989-634-5XXX | 5000–5999 | Reserved | FRONTIER NORTH, INC. - MI | 0695 | BANCROFT | MI |
| 2026-01-13 | 989-634-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BANCROFT | MI |
| 2016-01-26 | 989-634-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BANCROFT | MI |
| — | 989-634-8XXX | 8000–8999 | Reserved | FRONTIER NORTH, INC. - MI | 0695 | BANCROFT | MI |
| — | 989-634-9XXX | 9000–9999 | Reserved | FRONTIER NORTH, INC. - MI | 0695 | BANCROFT | 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.