NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 505-906

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 505-906 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 505 blocks

Most active assignees, all time — NPA 505
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 5
T-MOBILE USA, INC. 2
NEW CINGULAR WIRELESS PCS, LLC 2
BANDWIDTH.COM CLEC, LLC - NM 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
2007-08-08 505-906-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GALLUP NM
2008-11-19 505-906-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GALLUP NM
2009-03-05 505-906-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 GALLUP NM
2009-02-04 505-906-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 GALLUP NM
2009-03-05 505-906-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 GALLUP NM
2008-11-19 505-906-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GALLUP NM
2010-08-09 505-906-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F GALLUP NM
2009-01-07 505-906-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 GALLUP NM
2009-01-07 505-906-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 GALLUP NM
2024-01-19 505-906-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GALLUP NM

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.