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 425
NEW CINGULAR WIRELESS PCS, LLC 2
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
2020-06-30 425-459-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J BELLEVUE WA
2020-06-30 425-625-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J BELLEVUE WA
2020-06-25 425-331-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H ISSAQUAH WA
2020-06-25 425-331-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H ISSAQUAH WA
2020-06-25 425-331-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H ISSAQUAH WA
2020-06-25 425-331-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H ISSAQUAH WA
2020-06-24 425-292-4XXX 4000–4999Assigned ELTOPIA COMMUNICATIONS, LLC - WA 663D NORTH BEND WA
2020-06-24 425-341-8XXX 8000–8999Assigned ELTOPIA COMMUNICATIONS, LLC - WA 663D SILVERLAKE WA
2020-06-24 425-390-6XXX 6000–6999Assigned ELTOPIA COMMUNICATIONS, LLC - WA 663D RENTON WA
2020-06-24 425-394-7XXX 7000–7999Assigned ELTOPIA COMMUNICATIONS, LLC - WA 663D ISSAQUAH WA
2020-06-24 425-407-7XXX 7000–7999Assigned ELTOPIA COMMUNICATIONS, LLC - WA 663D EVERETT WA
2020-06-24 425-434-2XXX 2000–2999Assigned ELTOPIA COMMUNICATIONS, LLC - WA 663D SNOQUMPASS WA
2020-06-24 425-440-5XXX 5000–5999Assigned ELTOPIA COMMUNICATIONS, LLC - WA 663D BELLEVUE WA
2020-06-24 425-549-8XXX 8000–8999Assigned ELTOPIA COMMUNICATIONS, LLC - WA 663D CARNATION WA
2020-06-24 425-569-5XXX 5000–5999Assigned ELTOPIA COMMUNICATIONS, LLC - WA 663D MAPLE VLY WA
2020-06-24 425-898-6XXX 6000–6999Assigned ELTOPIA COMMUNICATIONS, LLC - WA 663D KIRKLAND WA
2020-06-24 425-908-8XXX 8000–8999Assigned ELTOPIA COMMUNICATIONS, LLC - WA 663D BOTHELL WA
2020-06-23 425-222-8XXX 8000–8999Assigned ELTOPIA COMMUNICATIONS, LLC - WA 663D FALL CITY WA
2020-06-17 425-225-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E SILVERLAKE WA
2020-06-17 425-225-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E SILVERLAKE WA
2020-05-28 425-728-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F RENTON WA
2020-05-22 425-331-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F ISSAQUAH WA
2020-05-06 425-336-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 RENTON WA
2020-05-04 425-728-6XXX 6000–6999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F RENTON WA
2020-04-23 425-967-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 HALLS LAKE WA
2020-03-26 425-331-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ISSAQUAH WA
2020-03-26 425-331-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ISSAQUAH WA
2020-03-24 425-243-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E RENTON WA
2020-03-24 425-439-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BOTHELL WA
2020-03-24 425-439-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BOTHELL WA
2020-03-24 425-439-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BOTHELL WA
2020-03-24 425-439-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BOTHELL WA
2020-03-24 425-465-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ISSAQUAH WA
2020-03-24 425-651-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ISSAQUAH WA
2020-03-24 425-873-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 RENTON WA
2020-03-24 425-873-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 RENTON WA
2020-03-23 425-521-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2020-03-23 425-535-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2020-03-16 425-439-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BOTHELL WA
2020-03-16 425-496-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 RENTON WA
2020-03-12 425-465-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ISSAQUAH WA
2020-03-06 425-403-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KIRKLAND WA
2020-02-26 425-459-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BELLEVUE WA
2020-02-26 425-459-3XXX 3000–3999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F BELLEVUE WA
2020-02-26 425-465-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ISSAQUAH WA
2020-02-26 425-465-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ISSAQUAH WA
2020-02-26 425-465-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ISSAQUAH WA
2020-02-26 425-480-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 HALLS LAKE WA
2020-02-26 425-480-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 HALLS LAKE WA
2020-02-26 425-480-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 HALLS LAKE 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.