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
2024-03-15 509-273-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ELLENSBURG WA
2024-03-15 509-273-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ELLENSBURG WA
2024-03-15 509-986-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ELLENSBURG WA
2024-03-11 509-975-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 PASCO WA
2024-03-11 509-975-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 PASCO WA
2024-03-08 509-918-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2024-03-01 509-224-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHENEY WA
2024-03-01 509-224-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHENEY WA
2024-02-29 509-918-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2024-02-29 509-918-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2024-02-29 509-918-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2024-02-26 509-273-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ELLENSBURG WA
2024-02-21 509-408-7XXX 7000–7999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F LIBERTY LK WA
2024-02-21 509-871-6XXX 6000–6999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F OROVILLE WA
2024-02-09 509-360-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WALLAWALLA WA
2024-02-09 509-360-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WALLAWALLA WA
2024-02-06 509-507-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 DEER PARK WA
2024-01-29 509-268-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 YAKIMA WA
2024-01-29 509-360-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WALLAWALLA WA
2024-01-29 509-746-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 YAKIMA WA
2024-01-12 509-975-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PASCO WA
2024-01-12 509-975-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PASCO WA
2024-01-09 509-746-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 YAKIMA WA
2024-01-08 509-262-7XXX 7000–7999Assigned TERRA NOVA TELECOM INC. 145J DEER PARK WA
2023-12-22 509-802-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KENNEWICK WA
2023-12-12 509-273-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ELLENSBURG WA
2023-12-06 509-273-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA
2023-12-06 509-273-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA
2023-12-05 509-798-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2023-12-05 509-798-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2023-12-05 509-798-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2023-12-05 509-798-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2023-10-27 509-300-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WENATCHEE WA
2023-10-20 509-507-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 DEER PARK WA
2023-10-17 509-238-8XXX 8000–8999Assigned TERRA NOVA TELECOM INC. 145J ELK-GRNBLF WA
2023-10-17 509-419-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 COLVILLE WA
2023-09-25 509-425-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2023-09-25 509-425-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2023-09-25 509-425-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2023-09-25 509-425-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2023-09-15 509-651-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 DEER PARK WA
2023-08-22 509-273-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ELLENSBURG WA
2023-08-22 509-273-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ELLENSBURG WA
2023-08-22 509-802-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 KENNEWICK WA
2023-08-22 509-802-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 KENNEWICK WA
2023-08-17 509-905-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 PASCO WA
2023-08-16 509-905-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 PASCO WA
2023-08-14 509-206-1XXX 1000–1999Assigned TELNYX LLC 073H CLARKSTON WA
2023-08-14 509-564-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 DEER PARK WA
2023-08-11 509-510-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OTHELLO 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.