NumberResearchThousands-blocks in 660-288
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 660-288 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 660 blocks
Most active assignees, all time — NPA 660
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-07-02 | 660-288-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | KEYTESVL | MO |
| — | 660-288-1XXX | 1000–1999 | Available | KEYTESVL | MO | ||
| — | 660-288-2XXX | 2000–2999 | Reserved | BRIGHTSPEED OF EAST MISSOURI, LLC | 1151 | KEYTESVL | MO |
| — | 660-288-3XXX | 3000–3999 | Reserved | BRIGHTSPEED OF EAST MISSOURI, LLC | 1151 | KEYTESVL | MO |
| 2015-08-31 | 660-288-4XXX | 4000–4999 | Assigned | CHARITON VALLEY COMMUNICATIONS CORPORATION | 250A | KEYTESVL | MO |
| — | 660-288-5XXX | 5000–5999 | Available | KEYTESVL | MO | ||
| 2014-04-10 | 660-288-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | KEYTESVL | MO |
| 2013-09-26 | 660-288-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | KEYTESVL | MO |
| 2020-08-27 | 660-288-8XXX | 8000–8999 | Assigned | FRACTEL, LLC | 965H | KEYTESVL | MO |
| — | 660-288-9XXX | 9000–9999 | Available | KEYTESVL | MO |
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.