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
2012-06-12 425-407-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2012-06-12 425-970-4XXX 4000–4999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 RENTON WA
2012-06-11 425-697-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 HALLS LAKE WA
2012-06-04 425-202-5XXX 5000–5999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F KIRKLAND WA
2012-06-04 425-202-6XXX 6000–6999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F KIRKLAND WA
2012-05-22 425-728-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E RENTON WA
2012-05-16 425-777-4XXX 4000–4999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 BELLEVUE WA
2012-05-15 425-272-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F RENTON WA
2012-05-11 425-366-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2012-05-11 425-903-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2012-05-07 425-429-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2012-05-07 425-628-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2012-05-07 425-628-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2012-05-07 425-628-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2012-05-07 425-628-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2012-04-25 425-896-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 KIRKLAND WA
2012-04-20 425-409-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F HALLS LAKE WA
2012-04-20 425-429-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BELLEVUE WA
2012-04-16 425-777-9XXX 9000–9999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 BELLEVUE WA
2012-04-12 425-791-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2012-04-06 425-407-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 EVERETT WA
2012-04-05 425-333-9XXX 9000–9999Assigned ASTOUND BROADBAND, LLC - WA 937F CARNATION WA
2012-04-02 425-243-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F RENTON WA
2012-04-02 425-628-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 7455 BELLEVUE WA
2012-03-27 425-419-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BOTHELL WA
2012-03-21 425-318-6XXX 6000–6999Assigned ASTOUND BROADBAND, LLC - WA 937F BOTHELL WA
2012-03-21 425-636-9XXX 9000–9999Assigned ASTOUND BROADBAND, LLC - WA 937F KIRKLAND WA
2012-03-19 425-658-0XXX 0000–0999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F KIRKLAND WA
2012-03-19 425-658-9XXX 9000–9999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F KIRKLAND WA
2012-03-05 425-369-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E ISSAQUAH WA
2012-03-05 425-777-7XXX 7000–7999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F BELLEVUE WA
2012-03-05 425-880-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E AMES LAKE WA
2012-03-05 425-947-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E KIRKLAND WA
2012-02-28 425-919-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RENTON WA
2012-02-22 425-404-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2012-02-22 425-905-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2012-02-17 425-270-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F ISSAQUAH WA
2012-02-02 425-358-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 MAPLE VLY WA
2012-01-26 425-366-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EVERETT WA
2012-01-24 425-628-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2012-01-24 425-628-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2012-01-18 425-606-6XXX 6000–6999Assigned ASTOUND BROADBAND, LLC - WA 937F ISSAQUAH WA
2012-01-18 425-622-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2012-01-18 425-658-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J KIRKLAND WA
2012-01-11 425-321-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SILVERLAKE WA
2012-01-05 425-247-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2012-01-04 425-368-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BOTHELL WA
2012-01-04 425-615-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BELLEVUE WA
2012-01-03 425-333-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E CARNATION WA
2012-01-03 425-441-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E FALL CITY 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.