NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

7 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 509
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 3
NEW CINGULAR WIRELESS PCS, LLC 2
EXIANT COMMUNICATIONS LLC 2
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
2016-02-26 509-968-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 ELLENSBURG WA
2016-02-25 509-260-2XXX 2000–2999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F CLE ELUM WA
2016-02-22 509-579-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KENNEWICK WA
2016-02-19 509-317-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E YAKIMA WA
2016-02-19 509-717-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 EPHRATA WA
2016-02-16 509-233-4XXX 4000–4999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F LOON LAKE WA
2016-02-11 509-215-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E DAVENPORT WA
2016-02-11 509-236-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E EDWALLTYLR WA
2016-02-11 509-265-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E CONNELL WA
2016-02-11 509-266-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E MATHEWSCOR WA
2016-02-11 509-285-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E OAKESDALE WA
2016-02-11 509-287-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E FARMINGTON WA
2016-02-11 509-485-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E MOLSON WA
2016-02-11 509-497-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E BENTONCITY WA
2016-02-11 509-587-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E BREWSTER WA
2016-02-11 509-636-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E CRESTON WA
2016-02-11 509-653-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E NACHES WA
2016-02-11 509-658-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E NILE WA
2016-02-11 509-732-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E NORTHPORT WA
2016-02-11 509-749-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E EUREKA WA
2016-02-11 509-978-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E NESPELEM WA
2016-02-09 509-417-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 WARDEN WA
2016-02-05 509-934-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2016-02-04 509-345-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 WILSON CRK WA
2016-02-04 509-390-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SOAP LAKE WA
2016-02-04 509-414-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 ELK-GRNBLF WA
2016-02-04 509-550-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 NEWPORT WA
2016-02-04 509-600-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BRIDGEPORT WA
2016-02-04 509-620-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 COULEE DAM WA
2016-02-04 509-632-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 COULEECITY WA
2016-02-04 509-639-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 ALMIRA WA
2016-02-04 509-683-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 DOUGLASCO WA
2016-02-04 509-717-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 EPHRATA WA
2016-02-04 509-794-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 QUINCY WA
2016-02-04 509-821-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 DEER PARK WA
2016-02-04 509-932-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 MATTAWA WA
2016-02-02 509-245-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E SPANGLE WA
2016-02-02 509-317-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E YAKIMA WA
2016-02-02 509-341-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E TWISP WA
2016-02-02 509-345-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E WILSON CRK WA
2016-02-02 509-347-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E RITZVILLE WA
2016-02-02 509-390-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E SOAP LAKE WA
2016-02-02 509-578-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E RICHLAND WA
2016-02-02 509-646-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E WASHTUCNA WA
2016-02-02 509-672-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E RIMROCK WA
2016-02-01 509-350-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E MOSES LAKE WA
2016-02-01 509-404-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E DAYTON WA
2016-02-01 509-565-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E MEDICAL LK WA
2016-02-01 509-903-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E LIBERTY LK WA
2016-01-21 509-992-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SPOKANE 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.