NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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 360
EXIANT COMMUNICATIONS LLC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - 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
2024-07-30 360-948-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHEHALIS WA
2024-07-30 360-948-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHEHALIS WA
2024-07-23 360-465-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K GRAYSRIVER WA
2024-06-27 360-395-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MT VERNON WA
2024-06-27 360-542-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MT VERNON WA
2024-06-27 360-982-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MT VERNON WA
2024-06-10 360-948-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHEHALIS WA
2024-06-07 360-517-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SILVERDALE WA
2024-05-30 360-375-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SAN JUAN WA
2024-05-30 360-547-8XXX 8000–8999Assigned TERRA NOVA TELECOM INC. 145J MARYSVILLE WA
2024-05-30 360-719-6XXX 6000–6999Assigned TERRA NOVA TELECOM INC. 145J VANCOUVER WA
2024-05-03 360-826-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H MT VERNON WA
2024-05-03 360-855-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H MT VERNON WA
2024-04-29 360-557-4XXX 4000–4999Assigned TERRA NOVA TELECOM INC. 145J CHEHALIS WA
2024-03-11 360-814-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 MT VERNON WA
2024-03-11 360-853-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 MT VERNON WA
2024-02-26 360-399-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MT VERNON WA
2024-02-16 360-859-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 VANCOUVER WA
2024-01-22 360-707-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MT VERNON WA
2024-01-22 360-766-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MT VERNON WA
2024-01-22 360-766-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MT VERNON WA
2024-01-12 360-554-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PTTOWNSEND WA
2024-01-12 360-554-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PTTOWNSEND WA
2023-12-06 360-381-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PTTOWNSEND WA
2023-12-06 360-381-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PTTOWNSEND WA
2023-12-06 360-381-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PTTOWNSEND WA
2023-10-19 360-520-8XXX 8000–8999Assigned TERRA NOVA TELECOM INC. 145J CHEHALIS WA
2023-09-25 360-800-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 OLYMPIA WA
2023-09-15 360-996-8XXX 8000–8999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F CHEHALIS WA
2023-09-11 360-978-2XXX 2000–2999Assigned ASTOUND BROADBAND, LLC - WA 937F SALKUM WA
2023-09-11 360-983-1XXX 1000–1999Assigned ASTOUND BROADBAND, LLC - WA 937F MOSSYROCK WA
2023-09-05 360-324-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHEHALIS WA
2023-09-05 360-324-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHEHALIS WA
2023-08-17 360-462-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SHELTON WA
2023-07-13 360-344-5XXX 5000–5999Assigned TERRA NOVA TELECOM INC. 145J PTTOWNSEND WA
2023-06-29 360-732-6XXX 6000–6999Assigned BOOST SUBSCRIBERCO L.L.C. 490J CHIMACMCTR WA
2023-06-27 360-803-6XXX 6000–6999Assigned TELNYX LLC 073H RIDGEFIELD WA
2023-06-16 360-324-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHEHALIS WA
2023-05-19 360-227-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELFAIR WA
2023-05-11 360-404-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H MT VERNON WA
2023-05-11 360-428-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H MT VERNON WA
2023-05-11 360-445-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H MT VERNON WA
2023-05-11 360-488-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H MT VERNON WA
2023-05-01 360-222-1XXX 1000–1999Assigned BOOST SUBSCRIBERCO L.L.C. 490J SO WHIDBEY WA
2023-05-01 360-284-6XXX 6000–6999Assigned BOOST SUBSCRIBERCO L.L.C. 490J ENUMCLAW WA
2023-05-01 360-512-0XXX 0000–0999Assigned BOOST SUBSCRIBERCO L.L.C. 490J SNOHOMISH WA
2023-05-01 360-655-0XXX 0000–0999Assigned BOOST SUBSCRIBERCO L.L.C. 490J EATONVILLE WA
2023-05-01 360-826-1XXX 1000–1999Assigned BOOST SUBSCRIBERCO L.L.C. 490J MT VERNON WA
2023-04-25 360-641-0XXX 0000–0999Assigned EON TELECOM, INC. 839J ASHFORD WA
2023-04-13 360-395-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E MT VERNON 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.