NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

11 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 309
VERSATEL LLC 2
EXIANT COMMUNICATIONS LLC 2
BANDWIDTH.COM CLEC, LLC - IL 2
AHOI LLC 2
OPENTACT INC. 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
2005-03-09 309-731-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MACOMB IL
2005-02-24 309-392-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MINIERAGTN IL
2005-02-23 309-222-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PEORIA IL
2005-02-23 309-222-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PEORIA IL
2005-02-23 309-721-2XXX 2000–2999Assigned METROPCS, INC. 5562 ROCKISLAND IL
2005-02-16 309-750-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BLOOMINGTN IL
2005-02-15 309-807-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 BLOOMINGTN IL
2005-02-11 309-928-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 FARMERCITY IL
2005-02-07 309-868-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PEORIA IL
2005-01-11 309-716-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EASTMOLINE IL
2005-01-11 309-740-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PEORIA IL
2005-01-05 309-868-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PEORIA IL
2005-01-04 309-740-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PEORIA IL
2004-12-01 309-912-9XXX 9000–9999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F EASTMOLINE IL
2004-11-24 309-517-3XXX 3000–3999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F MOLINE IL
2004-11-11 309-270-4XXX 4000–4999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F CHILLICOTH IL
2004-10-20 309-912-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EASTMOLINE IL
2004-10-06 309-261-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BLOOMINGTN IL
2004-09-30 309-373-5XXX 5000–5999Assigned UNITED STATES CELLULAR - IL 6265 ROCKISLAND IL
2004-09-30 309-373-6XXX 6000–6999Assigned UNITED STATES CELLULAR - IL 6265 ROCKISLAND IL
2004-09-30 309-644-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IL 6265 ROCKISLAND IL
2004-09-30 309-644-1XXX 1000–1999Assigned UNITED STATES CELLULAR - IL 6265 ROCKISLAND IL
2004-08-22 309-219-1XXX 1000–1999Assigned UNITED STATES CELLULAR - IL 6265 PEORIA IL
2004-08-22 309-219-2XXX 2000–2999Assigned UNITED STATES CELLULAR - IL 6265 PEORIA IL
2004-08-22 309-219-3XXX 3000–3999Assigned UNITED STATES CELLULAR - IL 6265 PEORIA IL
2004-08-22 309-219-4XXX 4000–4999Assigned UNITED STATES CELLULAR - IL 6265 PEORIA IL
2004-08-22 309-219-5XXX 5000–5999Assigned UNITED STATES CELLULAR - IL 6265 PEORIA IL
2004-08-22 309-219-6XXX 6000–6999Assigned UNITED STATES CELLULAR - IL 6265 PEORIA IL
2004-08-22 309-219-7XXX 7000–7999Assigned UNITED STATES CELLULAR - IL 6265 PEORIA IL
2004-08-22 309-299-2XXX 2000–2999Assigned UNITED STATES CELLULAR - IL 6265 GALESBURG IL
2004-08-22 309-299-3XXX 3000–3999Assigned UNITED STATES CELLULAR - IL 6265 GALESBURG IL
2004-08-22 309-299-4XXX 4000–4999Assigned UNITED STATES CELLULAR - IL 6265 GALESBURG IL
2004-08-22 309-299-5XXX 5000–5999Assigned UNITED STATES CELLULAR - IL 6265 GALESBURG IL
2004-08-22 309-299-6XXX 6000–6999Assigned UNITED STATES CELLULAR - IL 6265 GALESBURG IL
2004-08-22 309-299-7XXX 7000–7999Assigned UNITED STATES CELLULAR - IL 6265 GALESBURG IL
2004-08-22 309-299-8XXX 8000–8999Assigned UNITED STATES CELLULAR - IL 6265 GALESBURG IL
2004-08-22 309-313-1XXX 1000–1999Assigned UNITED STATES CELLULAR - IL 6265 MACOMB IL
2004-08-22 309-313-2XXX 2000–2999Assigned UNITED STATES CELLULAR - IL 6265 MACOMB IL
2004-08-22 309-313-3XXX 3000–3999Assigned UNITED STATES CELLULAR - IL 6265 MACOMB IL
2004-08-22 309-313-4XXX 4000–4999Assigned UNITED STATES CELLULAR - IL 6265 MACOMB IL
2004-08-22 309-313-5XXX 5000–5999Assigned UNITED STATES CELLULAR - IL 6265 MACOMB IL
2004-08-22 309-613-1XXX 1000–1999Assigned UNITED STATES CELLULAR - IL 6265 PEKIN IL
2004-08-22 309-613-2XXX 2000–2999Assigned UNITED STATES CELLULAR - IL 6265 PEKIN IL
2004-08-10 309-303-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PEORIA IL
2004-06-25 309-313-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 MACOMB IL
2004-06-24 309-518-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LEWISTOWN IL
2004-06-22 309-354-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MACKINAW IL
2004-06-22 309-362-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 TRIVOLI IL
2004-06-22 309-365-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LEXINGTON IL
2004-06-22 309-379-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 STANFORD IL

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.