NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 360-638

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 360-638 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
CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 3
TERRA NOVA TELECOM INC. 1
ONVOY, LLC - WA 1
NUSO, LLC 1
LEVEL 3 COMMUNICATIONS, LLC - WA 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
— 360-638-0XXX 0000–0999Reserved CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 2408 KINGSTON WA
— 360-638-1XXX 1000–1999Reserved CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 2408 KINGSTON WA
— 360-638-2XXX 2000–2999Reserved CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 2408 KINGSTON WA
2013-08-30 360-638-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E KINGSTON WA
2013-11-27 360-638-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KINGSTON WA
2020-11-15 360-638-5XXX 5000–5999Assigned NUSO, LLC 478J KINGSTON WA
2014-07-15 360-638-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J KINGSTON WA
— 360-638-7XXX 7000–7999Available KINGSTON WA
2026-02-19 360-638-8XXX 8000–8999Assigned TERRA NOVA TELECOM INC. 145J KINGSTON WA
— 360-638-9XXX 9000–9999Reserved LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KINGSTON 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.