NumberResearchThousands-blocks in 440-287
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 440-287 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 440 blocks
Most active assignees, all time — NPA 440
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 440-287-0XXX | 0000–0999 | Reserved | PAETEC ITEL, LLC | 829J | CHAGRINFLS | OH |
| 2021-10-21 | 440-287-1XXX | 1000–1999 | Assigned | ONVOY, LLC - OH | 464C | CHAGRINFLS | OH |
| — | 440-287-2XXX | 2000–2999 | Reserved | PAETEC ITEL, LLC | 829J | CHAGRINFLS | OH |
| 2021-10-28 | 440-287-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHAGRINFLS | OH |
| 2021-08-19 | 440-287-4XXX | 4000–4999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | CHAGRINFLS | OH |
| 2003-12-30 | 440-287-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | CHAGRINFLS | OH |
| 2004-10-08 | 440-287-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | CHAGRINFLS | OH |
| 2005-01-24 | 440-287-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | CHAGRINFLS | OH |
| 2005-06-21 | 440-287-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | CHAGRINFLS | OH |
| 2005-06-21 | 440-287-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | CHAGRINFLS | OH |
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.