NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 360-454

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 360-454 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
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 3
ONVOY SPECTRUM, LLC 2
ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 2
ONVOY, LLC - WA 1
NEW CINGULAR WIRELESS PCS, 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
2011-09-01 360-454-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J MARYSVILLE WA
2009-09-22 360-454-1XXX 1000–1999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 MARYSVILLE WA
2021-12-10 360-454-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H MARYSVILLE WA
2015-10-09 360-454-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 MARYSVILLE WA
2015-09-16 360-454-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 MARYSVILLE WA
2003-09-25 360-454-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 MARYSVILLE WA
2015-11-10 360-454-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 MARYSVILLE WA
2021-12-10 360-454-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H MARYSVILLE WA
2015-03-02 360-454-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MARYSVILLE WA
2016-01-28 360-454-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E MARYSVILLE 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.