Thousands-blocks in 575-812

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 575-812 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 575 blocks

Most active assignees, all time — NPA 575

MESCALERO APACHE TELECOM, INC. - NM 5

QWEST CORPORATION 2

TELEPORT COMMUNICATIONS AMERICA NM-LLC 1

T-MOBILE USA, INC. 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

Recent thousands-block assignments
Assigned	Thousands-block	Last 4 digits	Status	Assignee	OCN	Rate center	State
—	575-812-0XXX	0000–0999	Reserved	MESCALERO APACHE TELECOM, INC. - NM	661D	ALAMOGORDO	NM
—	575-812-1XXX	1000–1999	Reserved	MESCALERO APACHE TELECOM, INC. - NM	661D	ALAMOGORDO	NM
—	575-812-2XXX	2000–2999	Reserved	MESCALERO APACHE TELECOM, INC. - NM	661D	ALAMOGORDO	NM
—	575-812-3XXX	3000–3999	Reserved	MESCALERO APACHE TELECOM, INC. - NM	661D	ALAMOGORDO	NM
—	575-812-4XXX	4000–4999	Reserved	MESCALERO APACHE TELECOM, INC. - NM	661D	ALAMOGORDO	NM
2007-05-25	575-812-5XXX	5000–5999	Assigned	QWEST CORPORATION	9636	ALAMOGORDO	NM
2007-05-25	575-812-6XXX	6000–6999	Assigned	QWEST CORPORATION	9636	ALAMOGORDO	NM
2012-01-26	575-812-7XXX	7000–7999	Assigned	TELEPORT COMMUNICATIONS AMERICA NM-LLC	450C	ALAMOGORDO	NM
2008-10-14	575-812-8XXX	8000–8999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - NM	5470	ALAMOGORDO	NM
2007-08-30	575-812-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	ALAMOGORDO	NM

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.