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
2010-06-10 425-786-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2010-05-25 425-578-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MAPLE VLY WA
2010-05-25 425-919-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RENTON WA
2010-05-17 425-654-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 ISSAQUAH WA
2010-05-17 425-998-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E BELLEVUE WA
2010-05-07 425-292-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E NORTH BEND WA
2010-05-07 425-312-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E EVERETT WA
2010-04-23 425-970-7XXX 7000–7999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 RENTON WA
2010-04-16 425-419-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BOTHELL WA
2010-03-23 425-318-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BOTHELL WA
2010-03-16 425-250-7XXX 7000–7999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 KIRKLAND WA
2010-03-16 425-921-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 HALLS LAKE WA
2010-03-16 425-921-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 HALLS LAKE WA
2010-03-16 425-921-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 HALLS LAKE WA
2010-03-02 425-406-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 KIRKLAND WA
2010-02-23 425-332-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E SILVERLAKE WA
2010-02-23 425-361-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E HALLS LAKE WA
2010-02-23 425-374-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E EVERETT WA
2010-02-23 425-892-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E BOTHELL WA
2010-02-10 425-563-6XXX 6000–6999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 HALLS LAKE WA
2010-02-09 425-310-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F MAPLE VLY WA
2010-01-22 425-200-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F ISSAQUAH WA
2010-01-22 425-200-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F ISSAQUAH WA
2010-01-22 425-224-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SILVERLAKE WA
2010-01-22 425-224-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SILVERLAKE WA
2010-01-22 425-243-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F RENTON WA
2010-01-22 425-243-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F RENTON WA
2010-01-22 425-243-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F RENTON WA
2010-01-22 425-298-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA
2010-01-22 425-298-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA
2010-01-22 425-298-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA
2010-01-22 425-298-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA
2010-01-22 425-610-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EVERETT WA
2010-01-22 425-610-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EVERETT WA
2010-01-22 425-610-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EVERETT WA
2010-01-22 425-610-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EVERETT WA
2010-01-22 425-780-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BOTHELL WA
2010-01-22 425-780-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BOTHELL WA
2010-01-22 425-780-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BOTHELL WA
2010-01-22 425-954-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F HALLS LAKE WA
2010-01-22 425-954-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F HALLS LAKE WA
2010-01-22 425-954-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F HALLS LAKE WA
2010-01-22 425-954-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F HALLS LAKE WA
2010-01-22 425-998-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BELLEVUE WA
2010-01-22 425-998-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BELLEVUE WA
2010-01-22 425-998-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BELLEVUE WA
2010-01-18 425-298-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J KIRKLAND WA
2010-01-12 425-582-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 HALLS LAKE WA
2010-01-12 425-903-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 EVERETT WA
2010-01-05 425-647-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE 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.