NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

8 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2022-10-11 509-236-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E EDWALLTYLR WA
2022-10-11 509-259-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E SPRAGUE WA
2022-10-10 509-564-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 DEER PARK WA
2022-10-03 509-296-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PULLMAN WA
2022-09-30 509-746-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WA 6270 YAKIMA WA
2022-09-27 509-509-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E YAKIMA WA
2022-09-27 509-509-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E YAKIMA WA
2022-09-27 509-509-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E YAKIMA WA
2022-09-27 509-509-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E YAKIMA WA
2022-09-27 509-509-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E YAKIMA WA
2022-09-27 509-509-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E YAKIMA WA
2022-09-27 509-509-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E YAKIMA WA
2022-09-27 509-509-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E YAKIMA WA
2022-09-27 509-509-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E YAKIMA WA
2022-09-27 509-509-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E YAKIMA WA
2022-09-20 509-743-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2022-09-20 509-743-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2022-09-20 509-798-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SPOKANE WA
2022-09-19 509-377-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E COLUMBIA WA
2022-09-19 509-506-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YAKIMA WA
2022-09-19 509-506-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YAKIMA WA
2022-09-19 509-874-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E WHITE SWAN WA
2022-09-19 509-970-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2022-09-15 509-425-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2022-09-15 509-425-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2022-09-09 509-231-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2022-09-08 509-224-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E CHENEY WA
2022-09-08 509-224-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E CHENEY WA
2022-09-06 509-245-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E SPANGLE WA
2022-09-06 509-259-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E SPRAGUE WA
2022-09-06 509-997-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E TWISP WA
2022-09-02 509-253-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E HARRINGTON WA
2022-08-24 509-286-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E ROCKFORD WA
2022-08-19 509-239-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E EDWALLTYLR WA
2022-08-19 509-239-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E EDWALLTYLR WA
2022-08-18 509-425-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SPOKANE WA
2022-08-18 509-425-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SPOKANE WA
2022-08-11 509-876-3XXX 3000–3999Assigned TELNYX LLC 073H WALLAWALLA WA
2022-08-09 509-298-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 MOSES LAKE WA
2022-08-06 509-223-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E LOOMIS WA
2022-08-04 509-219-3XXX 3000–3999Assigned TELNYX LLC 073H STEVENSON WA
2022-08-04 509-425-8XXX 8000–8999Assigned HD CARRIER LLC 321J SPOKANE WA
2022-08-04 509-425-9XXX 9000–9999Assigned HD CARRIER LLC 321J SPOKANE WA
2022-08-02 509-920-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J CHEWELAH WA
2022-07-29 509-419-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 COLVILLE WA
2022-07-28 509-802-4XXX 4000–4999Assigned UNITED STATES CELLULAR - WA 6270 KENNEWICK WA
2022-07-21 509-242-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2022-07-21 509-564-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 DEER PARK WA
2022-07-21 509-564-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 DEER PARK WA
2022-07-21 509-666-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.