NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 360-230

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 360-230 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 5
TELEPORT COMMUNICATIONS AMERICA, LLC - WA 2
T-MOBILE USA, INC. 1
METROPCS, INC. 1
BANDWIDTH.COM CLEC, 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
2020-07-10 360-230-0XXX 0000–0999Assigned METROPCS, INC. 5562 MT VERNON WA
2006-02-15 360-230-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E MT VERNON WA
— 360-230-2XXX 2000–2999Reserved TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 MT VERNON WA
— 360-230-3XXX 3000–3999Reserved TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 MT VERNON WA
2020-10-20 360-230-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E MT VERNON WA
2020-10-20 360-230-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E MT VERNON WA
2020-02-07 360-230-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E MT VERNON WA
2020-02-07 360-230-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E MT VERNON WA
2020-09-15 360-230-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F MT VERNON WA
2020-01-09 360-230-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MT VERNON 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.