Thousands-blocks in 253-466

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 253-466 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 253 blocks

Most active assignees, all time — NPA 253

LEVEL 3 COMMUNICATIONS, LLC - WA 5

PEERLESS NETWORK OF WASHINGTON, LLC - WA 1

ONVOY, LLC - WA 1

NEW CINGULAR WIRELESS PCS, LLC 1

COMCAST IP PHONE, 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
—	253-466-0XXX	0000–0999	Reserved	LEVEL 3 COMMUNICATIONS, LLC - WA	6121	PUYALLUP	WA
—	253-466-1XXX	1000–1999	Reserved	LEVEL 3 COMMUNICATIONS, LLC - WA	6121	PUYALLUP	WA
—	253-466-2XXX	2000–2999	Reserved	LEVEL 3 COMMUNICATIONS, LLC - WA	6121	PUYALLUP	WA
2008-11-10	253-466-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	PUYALLUP	WA
—	253-466-4XXX	4000–4999	Reserved	LEVEL 3 COMMUNICATIONS, LLC - WA	6121	PUYALLUP	WA
—	253-466-5XXX	5000–5999	Reserved	LEVEL 3 COMMUNICATIONS, LLC - WA	6121	PUYALLUP	WA
2016-03-08	253-466-6XXX	6000–6999	Assigned	BANDWIDTH.COM CLEC, LLC - WA	006F	PUYALLUP	WA
2014-08-29	253-466-7XXX	7000–7999	Assigned	ONVOY, LLC - WA	483E	PUYALLUP	WA
2017-02-07	253-466-8XXX	8000–8999	Assigned	NEW CINGULAR WIRELESS PCS, LLC	6010	PUYALLUP	WA
2021-02-16	253-466-9XXX	9000–9999	Assigned	PEERLESS NETWORK OF WASHINGTON, LLC - WA	159F	PUYALLUP	WA

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.