NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 509-634

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 509-634 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 509 blocks

Most active assignees, all time — NPA 509
CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 5
NEW CINGULAR WIRELESS PCS, LLC 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 2
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
2019-05-21 509-634-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 NESPELEM WA
2007-02-08 509-634-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NESPELEM WA
— 509-634-2XXX 2000–2999Reserved CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 2408 NESPELEM WA
— 509-634-3XXX 3000–3999Reserved CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 2408 NESPELEM WA
— 509-634-4XXX 4000–4999Reserved CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 2408 NESPELEM WA
2014-12-26 509-634-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NESPELEM WA
2012-10-11 509-634-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NESPELEM WA
— 509-634-7XXX 7000–7999Reserved CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 2408 NESPELEM WA
— 509-634-8XXX 8000–8999Reserved CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 2408 NESPELEM WA
2020-03-30 509-634-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 NESPELEM 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.