NumberResearchThousands-blocks in 989-510
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 989-510 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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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 989-510-0XXX | 0000–0999 | Reserved | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PRESCOTT | MI |
| 2023-07-27 | 989-510-1XXX | 1000–1999 | Assigned | ONVOY, LLCV - MI | 543C | PRESCOTT | MI |
| 2025-11-24 | 989-510-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | PRESCOTT | MI |
| — | 989-510-3XXX | 3000–3999 | Available | PRESCOTT | MI | ||
| — | 989-510-4XXX | 4000–4999 | Available | PRESCOTT | MI | ||
| 2023-05-01 | 989-510-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PRESCOTT | MI |
| 2015-04-03 | 989-510-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | PRESCOTT | MI |
| 2013-03-26 | 989-510-7XXX | 7000–7999 | Assigned | ONVOY, LLCV - MI | 543C | PRESCOTT | MI |
| 2024-08-14 | 989-510-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | PRESCOTT | MI |
| — | 989-510-9XXX | 9000–9999 | Available | PRESCOTT | 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.