NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 205-508

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 205-508 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 205 blocks

Most active assignees, all time — NPA 205
CHARTER IP ENABLED SERVICES, LLC 2
TELEPORT COMMUNICATIONS AMERICA, LLC - AL 1
SOUTHERN COMMUNICATIONS SERVICES, INC. 1
PAETEC ITEL, LLC 1
ONVOY, 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
2008-11-03 205-508-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F TRUSSVILLE AL
2008-10-21 205-508-1XXX 1000–1999Assigned SOUTHERN COMMUNICATIONS SERVICES, INC. 6744 TRUSSVILLE AL
2008-10-27 205-508-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J TRUSSVILLE AL
2010-05-07 205-508-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K TRUSSVILLE AL
2007-10-22 205-508-4XXX 4000–4999Assigned BHN IP ENABLED SERVICES, LLC 045L TRUSSVILLE AL
2012-05-30 205-508-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K TRUSSVILLE AL
2015-02-26 205-508-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AL 8271 TRUSSVILLE AL
2014-02-24 205-508-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TRUSSVILLE AL
2014-05-21 205-508-8XXX 8000–8999Assigned LEVEL 3 TELECOM OF ALABAMA, LLC - AL 7327 TRUSSVILLE AL
2019-05-30 205-508-9XXX 9000–9999Assigned ONVOY, LLC - AL 604E TRUSSVILLE 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.