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
2021-12-07 509-364-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E GLENWOOD WA
2021-12-07 509-365-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E LYLE WA
2021-12-07 509-369-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E KLICKITAT WA
2021-12-07 509-395-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E TROUT LAKE WA
2021-12-07 509-538-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E WILLARD WA
2021-12-07 509-767-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E DALLESPORT WA
2021-12-07 509-790-5XXX 5000–5999Assigned SKYE TELECOM LLC DBA SKYETEL 622J SUNNYSIDE WA
2021-12-07 509-802-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 KENNEWICK WA
2021-12-07 509-802-2XXX 2000–2999Assigned SKYE TELECOM LLC DBA SKYETEL 622J KENNEWICK WA
2021-12-02 509-261-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E GOLDENDALE WA
2021-12-02 509-269-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E CONNELL WA
2021-12-02 509-269-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E CONNELL WA
2021-12-02 509-383-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E GRANGER WA
2021-12-02 509-383-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E GRANGER WA
2021-12-02 509-609-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E SPOKANE WA
2021-12-02 509-609-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E SPOKANE WA
2021-12-02 509-645-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E BREWSTER WA
2021-12-02 509-673-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E TIETON WA
2021-12-02 509-775-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E REPUBLIC WA
2021-12-02 509-824-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E SPOKANE WA
2021-12-02 509-878-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E PALOUSE WA
2021-12-01 509-580-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SELAH WA
2021-11-19 509-500-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E ASOTIN WA
2021-11-17 509-986-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA
2021-11-17 509-986-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA
2021-11-16 509-609-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2021-11-16 509-609-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2021-11-16 509-883-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H WENATCHEE WA
2021-11-15 509-856-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA
2021-11-03 509-208-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WA 6270 YAKIMA WA
2021-11-03 509-508-5XXX 5000–5999Assigned TELNYX LLC 073H SPOKANE WA
2021-11-03 509-802-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WA 6270 KENNEWICK WA
2021-11-01 509-213-9XXX 9000–9999Assigned AT&T - LOCAL 7421 SPRINGDALE WA
2021-10-28 509-741-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 WENATCHEE WA
2021-10-27 509-345-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E WILSON CRK WA
2021-10-25 509-213-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E SPRINGDALE WA
2021-10-25 509-213-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E SPRINGDALE WA
2021-10-25 509-215-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E DAVENPORT WA
2021-10-25 509-223-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E LOOMIS WA
2021-10-25 509-245-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E SPANGLE WA
2021-10-25 509-253-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E HARRINGTON WA
2021-10-25 509-259-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E SPRAGUE WA
2021-10-25 509-261-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E GOLDENDALE WA
2021-10-25 509-269-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E CONNELL WA
2021-10-25 509-285-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E OAKESDALE WA
2021-10-25 509-286-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E ROCKFORD WA
2021-10-25 509-287-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E FARMINGTON WA
2021-10-25 509-297-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E MATHEWSCOR WA
2021-10-25 509-320-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E STARBUCK WA
2021-10-25 509-401-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E POMEROY 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.