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
2022-03-23 509-800-6XXX 6000–6999Assigned COMMIO, LLC 939H CLARKSTON WA
2022-03-21 509-401-6XXX 6000–6999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F POMEROY WA
2022-03-21 509-986-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA
2022-03-21 509-986-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA
2022-03-21 509-986-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA
2022-03-10 509-609-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H SPOKANE WA
2022-03-08 509-975-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 PASCO WA
2022-03-08 509-975-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 PASCO WA
2022-03-08 509-986-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ELLENSBURG WA
2022-03-02 509-824-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SPOKANE WA
2022-03-01 509-864-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TOPPENISH WA
2022-02-25 509-348-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E DAVENPORT WA
2022-02-25 509-348-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E DAVENPORT WA
2022-02-25 509-564-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E DEER PARK WA
2022-02-25 509-564-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E DEER PARK WA
2022-02-25 509-610-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 COLFAX WA
2022-02-25 509-612-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KETTLE FLS WA
2022-02-25 509-936-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 CHEWELAH WA
2022-02-16 509-564-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 DEER PARK WA
2022-02-04 509-514-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2022-02-04 509-514-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2022-02-04 509-514-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2022-02-04 509-514-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2022-02-04 509-514-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2022-02-04 509-514-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2022-02-02 509-213-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E SPRINGDALE WA
2022-02-02 509-781-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PROSSER WA
2022-01-26 509-518-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H KENNEWICK WA
2022-01-21 509-861-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E OMAK WA
2022-01-19 509-841-9XXX 9000–9999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F WAITSBURG WA
2022-01-11 509-497-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E BENTONCITY WA
2022-01-08 509-215-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E DAVENPORT WA
2022-01-08 509-282-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E CONNELL WA
2022-01-08 509-282-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E CONNELL WA
2022-01-05 509-712-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SUNNYSIDE WA
2022-01-05 509-712-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SUNNYSIDE WA
2021-12-29 509-245-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E SPANGLE WA
2021-12-29 509-257-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E SPRAGUE WA
2021-12-29 509-390-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E SOAP LAKE WA
2021-12-28 509-616-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H SPOKANE WA
2021-12-28 509-616-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H SPOKANE WA
2021-12-28 509-816-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H SPOKANE WA
2021-12-28 509-816-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H SPOKANE WA
2021-12-23 509-580-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SELAH WA
2021-12-22 509-213-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E SPRINGDALE WA
2021-12-17 509-208-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 YAKIMA WA
2021-12-16 509-970-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J SPOKANE WA
2021-12-14 509-266-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E MATHEWSCOR WA
2021-12-13 509-236-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E EDWALLTYLR WA
2021-12-13 509-236-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E EDWALLTYLR 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.