NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

8 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
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
2017-11-20 509-890-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E DEER PARK WA
2017-11-16 509-800-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E CLARKSTON WA
2017-11-08 509-774-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WH SALMON WA
2017-11-08 509-862-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2017-11-06 509-940-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K RICHLAND WA
2017-11-01 509-902-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E YAKIMA WA
2017-11-01 509-902-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E YAKIMA WA
2017-10-17 509-542-6XXX 6000–6999Assigned METROPCS, INC. 5562 PASCO WA
2017-10-17 509-836-7XXX 7000–7999Assigned UNITED STATES CELLULAR - WA 6270 SUNNYSIDE WA
2017-10-17 509-862-2XXX 2000–2999Assigned METROPCS, INC. 5562 SPOKANE WA
2017-10-17 509-862-3XXX 3000–3999Assigned METROPCS, INC. 5562 SPOKANE WA
2017-10-17 509-902-4XXX 4000–4999Assigned METROPCS, INC. 5562 YAKIMA WA
2017-10-17 509-902-5XXX 5000–5999Assigned UNITED STATES CELLULAR - WA 6270 YAKIMA WA
2017-10-10 509-201-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ELLENSBURG WA
2017-10-10 509-405-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 KENNEWICK WA
2017-10-10 509-405-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 KENNEWICK WA
2017-10-10 509-794-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 QUINCY WA
2017-10-10 509-907-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 YAKIMA WA
2017-10-10 509-907-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 YAKIMA WA
2017-10-04 509-579-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K KENNEWICK WA
2017-10-04 509-862-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2017-09-26 509-284-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TEKOA WA
2017-09-14 509-423-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WENATCHEE WA
2017-09-14 509-537-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 PASCO WA
2017-09-14 509-730-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WALLAWALLA WA
2017-09-12 509-215-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E DAVENPORT WA
2017-09-12 509-283-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E ROCKFORD WA
2017-09-12 509-563-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E COLVILLE WA
2017-09-12 509-722-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E CHEWELAH WA
2017-09-11 509-213-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E SPRINGDALE WA
2017-09-11 509-300-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E WENATCHEE WA
2017-09-11 509-320-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E STARBUCK WA
2017-09-11 509-417-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E WARDEN WA
2017-09-11 509-641-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E WILBUR WA
2017-09-11 509-673-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E TIETON WA
2017-09-11 509-841-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E WAITSBURG WA
2017-09-11 509-902-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E YAKIMA WA
2017-09-08 509-207-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E REPUBLIC WA
2017-09-08 509-257-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E SPRAGUE WA
2017-09-08 509-478-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E ROSALIA WA
2017-09-08 509-632-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E COULEECITY WA
2017-09-08 509-635-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E GARFIELD WA
2017-09-08 509-796-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E REARDAN WA
2017-09-08 509-872-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E GARRISON WA
2017-09-08 509-940-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E RICHLAND WA
2017-09-07 509-867-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H SPOKANE WA
2017-09-06 509-223-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E LOOMIS WA
2017-09-06 509-289-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E EPHRATA WA
2017-09-06 509-339-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E PULLMAN WA
2017-09-06 509-361-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E MOSES LAKE 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.