NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

2 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 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
2010-10-27 425-243-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F RENTON WA
2010-10-27 425-381-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BOTHELL WA
2010-10-26 425-247-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BELLEVUE WA
2010-10-26 425-247-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BELLEVUE WA
2010-10-26 425-247-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BELLEVUE WA
2010-10-26 425-310-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F MAPLE VLY WA
2010-10-26 425-312-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EVERETT WA
2010-10-26 425-312-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EVERETT WA
2010-10-18 425-247-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2010-10-18 425-247-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2010-10-11 425-949-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BOTHELL WA
2010-10-08 425-354-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BOTHELL WA
2010-09-29 425-582-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J HALLS LAKE WA
2010-09-29 425-633-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BELLEVUE WA
2010-09-29 425-633-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BELLEVUE WA
2010-09-29 425-678-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J HALLS LAKE WA
2010-09-27 425-247-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 7455 BELLEVUE WA
2010-09-20 425-405-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EVERETT WA
2010-09-20 425-420-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BOTHELL WA
2010-09-20 425-633-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2010-09-14 425-586-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2010-09-07 425-395-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ISSAQUAH WA
2010-08-27 425-336-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 RENTON WA
2010-08-24 425-433-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J MAPLE VLY WA
2010-08-18 425-291-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J RENTON WA
2010-08-18 425-530-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EVERETT WA
2010-08-18 425-903-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J EVERETT WA
2010-08-18 425-919-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RENTON WA
2010-08-17 425-307-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J KIRKLAND WA
2010-08-12 425-748-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2010-08-12 425-974-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2010-08-11 425-372-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BELLEVUE WA
2010-08-11 425-519-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BELLEVUE WA
2010-08-06 425-698-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J BELLEVUE WA
2010-08-06 425-998-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2010-07-16 425-406-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E KIRKLAND WA
2010-07-13 425-312-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EVERETT WA
2010-07-09 425-440-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2010-07-08 425-919-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RENTON WA
2010-06-23 425-224-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SILVERLAKE WA
2010-06-23 425-243-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F RENTON WA
2010-06-23 425-256-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BELLEVUE WA
2010-06-21 425-285-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA
2010-06-17 425-312-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EVERETT WA
2010-06-17 425-409-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F HALLS LAKE WA
2010-06-11 425-281-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ISSAQUAH WA
2010-06-11 425-286-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BOTHELL WA
2010-06-11 425-786-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2010-06-11 425-786-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2010-06-11 425-786-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE 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.