Thousands-blocks in 458-600

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 458-600 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 458 blocks

Most active assignees, all time — NPA 458

NEW CINGULAR WIRELESS PCS, LLC 4

T-MOBILE USA, INC. 2

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 2

PEERLESS NETWORK OF OREGON, LLC - OR 1

INVOXIO INCORPORATED 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
2018-08-24	458-600-0XXX	0000–0999	Assigned	INVOXIO INCORPORATED	158H	BEND	OR
2019-02-12	458-600-1XXX	1000–1999	Assigned	PEERLESS NETWORK OF OREGON, LLC - OR	157F	BEND	OR
2020-01-15	458-600-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR	5820	BEND	OR
2019-12-20	458-600-3XXX	3000–3999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	BEND	OR
2019-12-20	458-600-4XXX	4000–4999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	BEND	OR
2019-12-20	458-600-5XXX	5000–5999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	BEND	OR
2019-08-05	458-600-6XXX	6000–6999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	BEND	OR
2019-04-30	458-600-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR	5820	BEND	OR
2021-09-24	458-600-8XXX	8000–8999	Assigned	T-MOBILE USA, INC.	6529	BEND	OR
2021-09-24	458-600-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	BEND	OR

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.