NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 360-858

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 360-858 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 360 blocks

Most active assignees, all time — NPA 360
ONVOY, LLC - WA 3
COMCAST IP PHONE, LLC 3
QWEST CORPORATION 2
PEERLESS NETWORK OF WASHINGTON, LLC - WA 1
CENTURYLINK COMMUNICATIONS, 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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
— 360-858-0XXX 0000–0999Reserved QWEST CORPORATION 9638 ROCHESTER WA
— 360-858-1XXX 1000–1999Reserved QWEST CORPORATION 9638 ROCHESTER WA
2014-03-11 360-858-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROCHESTER WA
2011-09-01 360-858-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J ROCHESTER WA
2014-11-13 360-858-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J ROCHESTER WA
2016-01-28 360-858-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E ROCHESTER WA
2007-02-22 360-858-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E ROCHESTER WA
2005-03-01 360-858-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J ROCHESTER WA
2018-10-09 360-858-8XXX 8000–8999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F ROCHESTER WA
2017-09-12 360-858-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E ROCHESTER 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.