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
2007-08-07 509-413-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E SPOKANE WA
2007-08-01 509-619-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2007-08-01 509-619-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2007-07-31 509-497-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E BENTONCITY WA
2007-07-23 509-392-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E RICHLAND WA
2007-07-23 509-607-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ELLENSBURG WA
2007-07-23 509-619-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E KENNEWICK WA
2007-07-23 509-936-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 CHEWELAH WA
2007-07-17 509-305-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SUNNYSIDE WA
2007-07-17 509-305-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SUNNYSIDE WA
2007-07-12 509-295-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 CLARKSTON WA
2007-07-12 509-881-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WENATCHEE WA
2007-07-12 509-881-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WENATCHEE WA
2007-06-29 509-254-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CLARKSTON WA
2007-06-29 509-393-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WENATCHEE WA
2007-06-26 509-240-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WALLAWALLA WA
2007-06-14 509-439-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SUNNYSIDE WA
2007-06-14 509-619-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 KENNEWICK WA
2007-06-08 509-293-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 WENATCHEE WA
2007-06-08 509-464-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SPOKANE WA
2007-06-04 509-619-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2007-06-01 509-831-4XXX 4000–4999Assigned UNITED STATES CELLULAR - WA 6270 SUNNYSIDE WA
2007-05-24 509-942-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RICHLAND WA
2007-05-18 509-246-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E SOAP LAKE WA
2007-05-18 509-449-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E BRIDGEPORT WA
2007-05-18 509-587-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E BREWSTER WA
2007-05-18 509-683-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E DOUGLASCO WA
2007-05-18 509-785-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E GEORGE WA
2007-05-17 509-470-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WENATCHEE WA
2007-05-15 509-380-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 PASCO WA
2007-05-15 509-385-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2007-05-15 509-385-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2007-05-15 509-385-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2007-05-15 509-834-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 YAKIMA WA
2007-05-15 509-846-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 OMAK WA
2007-05-14 509-473-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SPOKANE WA
2007-05-14 509-680-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 COLVILLE WA
2007-05-10 509-584-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WAPATO WA
2007-05-09 509-423-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E WENATCHEE WA
2007-05-09 509-797-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E QUINCY WA
2007-05-09 509-834-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E YAKIMA WA
2007-05-01 509-203-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K GRANDVIEW WA
2007-05-01 509-314-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K TOPPENISH WA
2007-05-01 509-383-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K GRANGER WA
2007-05-01 509-781-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K PROSSER WA
2007-05-01 509-896-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MABTON WA
2007-04-27 509-416-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PASCO WA
2007-04-27 509-515-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K SUNNYSIDE WA
2007-04-17 509-972-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F YAKIMA WA
2007-04-16 509-895-1XXX 1000–1999Assigned UNITED STATES CELLULAR - WA 6270 YAKIMA 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.