NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 575-659

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 575-659 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 3
NEW CINGULAR WIRELESS PCS, LLC - IL 3
TELEPORT COMMUNICATIONS AMERICA NM-LLC 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NM 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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2016-06-24 575-659-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F LOVINGTON NM
2017-08-15 575-659-1XXX 1000–1999Assigned ONVOY, LLC - NM 206F LOVINGTON NM
2020-02-06 575-659-2XXX 2000–2999Assigned ONVOY, LLC - NM 206F LOVINGTON NM
2016-01-29 575-659-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NM 7464 LOVINGTON NM
2019-12-11 575-659-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LOVINGTON NM
2019-10-02 575-659-5XXX 5000–5999Assigned ONVOY, LLC - NM 206F LOVINGTON NM
2019-05-21 575-659-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA NM-LLC 450C LOVINGTON NM
2017-09-25 575-659-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 LOVINGTON NM
2018-10-19 575-659-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LOVINGTON NM
2017-04-10 575-659-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LOVINGTON 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.