Thousands-blocks in 575-665

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 575-665 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

ONVOY, LLC - NM 4

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 2

BANDWIDTH.COM CLEC, LLC - NM 2

TELNYX LLC 1

COMMIO, 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

Recent thousands-block assignments
Assigned	Thousands-block	Last 4 digits	Status	Assignee	OCN	Rate center	State
2021-04-15	575-665-0XXX	0000–0999	Assigned	ONVOY, LLC - NM	206F	HOBBS	NM
2022-06-28	575-665-1XXX	1000–1999	Assigned	COMMIO, LLC	939H	HOBBS	NM
2022-07-12	575-665-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM	6573	HOBBS	NM
2022-07-28	575-665-3XXX	3000–3999	Assigned	BANDWIDTH.COM CLEC, LLC - NM	123F	HOBBS	NM
2022-07-28	575-665-4XXX	4000–4999	Assigned	BANDWIDTH.COM CLEC, LLC - NM	123F	HOBBS	NM
2021-02-09	575-665-5XXX	5000–5999	Assigned	ONVOY, LLC - NM	206F	HOBBS	NM
2021-02-09	575-665-6XXX	6000–6999	Assigned	ONVOY, LLC - NM	206F	HOBBS	NM
2021-02-09	575-665-7XXX	7000–7999	Assigned	ONVOY, LLC - NM	206F	HOBBS	NM
2022-11-04	575-665-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM	6573	HOBBS	NM
2022-07-19	575-665-9XXX	9000–9999	Assigned	TELNYX LLC	073H	HOBBS	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.