NumberResearchThousands-blocks in 440-278
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 440-278 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 |
|---|---|---|---|---|---|---|---|
| — | 440-278-0XXX | 0000–0999 | Reserved | T-MOBILE USA, INC. | 6529 | WICKLIFFE | OH |
| 2008-09-03 | 440-278-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | WICKLIFFE | OH |
| 2021-08-10 | 440-278-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | WICKLIFFE | OH |
| 2025-08-21 | 440-278-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - OH | 7532 | WICKLIFFE | OH |
| 2006-08-31 | 440-278-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | WICKLIFFE | OH |
| 2021-01-30 | 440-278-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | WICKLIFFE | OH |
| 2021-01-30 | 440-278-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | WICKLIFFE | OH |
| 2009-12-11 | 440-278-7XXX | 7000–7999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | WICKLIFFE | OH |
| 2024-12-05 | 440-278-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WICKLIFFE | OH |
| — | 440-278-9XXX | 9000–9999 | Reserved | T-MOBILE USA, INC. | 6529 | WICKLIFFE | OH |
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.