NumberResearchThousands-blocks in 681-731
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 681-731 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 681 blocks
Most active assignees, all time — NPA 681
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2021-02-08 | 681-731-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WV | 449F | MILL CREEK | WV |
| 2018-12-20 | 681-731-1XXX | 1000–1999 | Assigned | ONVOY, LLC - WV | 449F | MILL CREEK | WV |
| 2019-08-13 | 681-731-2XXX | 2000–2999 | Assigned | LUMOS NETWORKS OF WEST VIRGINIA INC. - WV | 2765 | MILL CREEK | WV |
| 2014-01-29 | 681-731-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | MILL CREEK | WV |
| 2021-02-08 | 681-731-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WV | 449F | MILL CREEK | WV |
| 2021-05-10 | 681-731-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MILL CREEK | WV |
| 2026-02-17 | 681-731-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MILL CREEK | WV |
| 2014-08-22 | 681-731-7XXX | 7000–7999 | Assigned | CITYNET WEST VIRGINIA, LLC - WV | 545B | MILL CREEK | WV |
| 2025-06-18 | 681-731-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MILL CREEK | WV |
| — | 681-731-9XXX | 9000–9999 | Available | MILL CREEK | WV |
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.