NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 505-735

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 505-735 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
NAVAJO COMM CO INC NM DBA NAVAJO COMM CO NM 4
4
TELNYX LLC 1
LEVEL 3 COMMUNICATIONS, 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
— 505-735-0XXX 0000–0999Reserved NAVAJO COMM CO INC NM DBA NAVAJO COMM CO NM 4450 TWIN LAKES NM
— 505-735-1XXX 1000–1999Reserved NAVAJO COMM CO INC NM DBA NAVAJO COMM CO NM 4450 TWIN LAKES NM
— 505-735-2XXX 2000–2999Reserved NAVAJO COMM CO INC NM DBA NAVAJO COMM CO NM 4450 TWIN LAKES NM
2019-11-18 505-735-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 TWIN LAKES NM
— 505-735-4XXX 4000–4999Available TWIN LAKES NM
— 505-735-5XXX 5000–5999Available TWIN LAKES NM
— 505-735-6XXX 6000–6999Available TWIN LAKES NM
— 505-735-7XXX 7000–7999Available TWIN LAKES NM
2022-07-19 505-735-8XXX 8000–8999Assigned TELNYX LLC 073H TWIN LAKES NM
— 505-735-9XXX 9000–9999Reserved NAVAJO COMM CO INC NM DBA NAVAJO COMM CO NM 4450 TWIN LAKES 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.