NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 251-235

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

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The ten 1,000-number thousand-blocks inside prefix 251-235 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 251 blocks

Most active assignees, all time — NPA 251
ONVOY, LLC - AL 4
ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 4
CENTURYLINK COMMUNICATIONS, LLC 1
BANDWIDTH.COM CLEC, LLC - AL 1
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2022-05-24 251-235-0XXX 0000–0999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MCINTOSH AL
2008-11-03 251-235-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MCINTOSH AL
— 251-235-2XXX 2000–2999Reserved ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MCINTOSH AL
2020-10-29 251-235-3XXX 3000–3999Assigned ONVOY, LLC - AL 604E MCINTOSH AL
2022-05-24 251-235-4XXX 4000–4999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MCINTOSH AL
2020-10-29 251-235-5XXX 5000–5999Assigned ONVOY, LLC - AL 604E MCINTOSH AL
2021-06-29 251-235-6XXX 6000–6999Assigned ONVOY, LLC - AL 604E MCINTOSH AL
2014-04-11 251-235-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MCINTOSH AL
2019-01-03 251-235-8XXX 8000–8999Assigned ONVOY, LLC - AL 604E MCINTOSH AL
— 251-235-9XXX 9000–9999Reserved ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MCINTOSH AL

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.