NumberResearch Membership · Data 09/19/2026

Thousands-blocks in 205-340

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

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

The ten 1,000-number thousand-blocks inside prefix 205-340 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
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 4
LEVEL 3 COMMUNICATIONS, LLC - AL 2
BANDWIDTH.COM CLEC, LLC - AL 2
POWERTEL BIRMINGHAM LICENSES, INC. 1
AT&T ENTERPRISES, LLC 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
2011-09-16 205-340-0XXX 0000–0999Assigned AT&T ENTERPRISES, LLC 516C CENTREVL AL
2009-12-29 205-340-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 CENTREVL AL
2010-02-26 205-340-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 CENTREVL AL
2010-02-26 205-340-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 CENTREVL AL
— 205-340-4XXX 4000–4999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 CENTREVL AL
2008-03-03 205-340-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 CENTREVL AL
2010-07-22 205-340-6XXX 6000–6999Assigned POWERTEL BIRMINGHAM LICENSES, INC. 7475 CENTREVL AL
2012-11-07 205-340-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 CENTREVL AL
2011-05-02 205-340-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F CENTREVL AL
2012-08-31 205-340-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F CENTREVL AL

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.