NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

22 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 475
ONVOY, LLC - CT 14
BANDWIDTH.COM CLEC, LLC - CT 4
CSC WIRELESS, LLC 3
OMNIPOINT COMMUNICATIONS, INC. - CT 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
2020-07-22 475-265-6XXX 6000–6999Assigned ONVOY, LLC - CT 639C TRUMBULL CT
2020-07-22 475-267-4XXX 4000–4999Assigned ONVOY, LLC - CT 639C NEW HAVEN CT
2020-07-22 475-267-5XXX 5000–5999Assigned ONVOY, LLC - CT 639C NEW HAVEN CT
2020-07-22 475-267-6XXX 6000–6999Assigned ONVOY, LLC - CT 639C NEW HAVEN CT
2020-07-22 475-336-8XXX 8000–8999Assigned FRACTEL, LLC 965H DARIEN CT
2020-07-22 475-345-6XXX 6000–6999Assigned FRACTEL, LLC 965H BRIDGEPORT CT
2020-07-22 475-455-5XXX 5000–5999Assigned FRACTEL, LLC 965H ANSONIDRBY CT
2020-07-22 475-557-0XXX 0000–0999Assigned ONVOY, LLC - CT 639C WATERBURY CT
2020-07-22 475-557-4XXX 4000–4999Assigned ONVOY, LLC - CT 639C WATERBURY CT
2020-07-22 475-688-8XXX 8000–8999Assigned FRACTEL, LLC 965H MERIDEN CT
2020-07-22 475-755-5XXX 5000–5999Assigned FRACTEL, LLC 965H NORWALK CT
2020-07-22 475-758-6XXX 6000–6999Assigned FRACTEL, LLC 965H NEW CANAAN CT
2020-07-22 475-766-3XXX 3000–3999Assigned FRACTEL, LLC 965H NEW HAVEN CT
2020-07-22 475-766-6XXX 6000–6999Assigned FRACTEL, LLC 965H NEW HAVEN CT
2020-07-22 475-877-7XXX 7000–7999Assigned FRACTEL, LLC 965H REDDING CT
2020-07-22 475-946-3XXX 3000–3999Assigned FRACTEL, LLC 965H OLDGRNWICH CT
2020-07-16 475-274-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F GUILFORD CT
2020-07-16 475-285-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F NAUGATUCK CT
2020-07-16 475-285-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F NAUGATUCK CT
2020-07-13 475-900-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F GUILFORD CT
2020-07-09 475-261-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NEW HAVEN CT
2020-06-23 475-273-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F BRIDGEPORT CT
2020-06-23 475-273-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F BRIDGEPORT CT
2020-06-23 475-273-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F BRIDGEPORT CT
2020-06-18 475-236-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F BRIDGEPORT CT
2020-06-18 475-268-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H STAMFORD CT
2020-06-18 475-268-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H STAMFORD CT
2020-06-18 475-268-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H STAMFORD CT
2020-06-18 475-268-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H STAMFORD CT
2020-06-18 475-268-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H STAMFORD CT
2020-06-18 475-476-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F BRIDGEPORT CT
2020-06-15 475-271-1XXX 1000–1999Assigned ONVOY, LLC - CT 639C MILFORD CT
2020-06-15 475-271-2XXX 2000–2999Assigned ONVOY, LLC - CT 639C MILFORD CT
2020-06-12 475-445-1XXX 1000–1999Assigned ONVOY, LLC - CT 639C NEWTOWN CT
2020-06-12 475-445-2XXX 2000–2999Assigned ONVOY, LLC - CT 639C NEWTOWN CT
2020-06-12 475-501-1XXX 1000–1999Assigned ONVOY, LLC - CT 639C GEORGETOWN CT
2020-06-12 475-501-2XXX 2000–2999Assigned ONVOY, LLC - CT 639C GEORGETOWN CT
2020-06-08 475-263-3XXX 3000–3999Assigned ONVOY, LLC - CT 639C WATERBURY CT
2020-06-08 475-263-4XXX 4000–4999Assigned ONVOY, LLC - CT 639C WATERBURY CT
2020-06-08 475-268-1XXX 1000–1999Assigned ONVOY, LLC - CT 639C STAMFORD CT
2020-06-08 475-268-7XXX 7000–7999Assigned ONVOY, LLC - CT 639C STAMFORD CT
2020-06-08 475-268-8XXX 8000–8999Assigned ONVOY, LLC - CT 639C STAMFORD CT
2020-06-08 475-465-5XXX 5000–5999Assigned ONVOY, LLC - CT 639C OLDGRNWICH CT
2020-06-08 475-465-6XXX 6000–6999Assigned ONVOY, LLC - CT 639C OLDGRNWICH CT
2020-06-08 475-471-0XXX 0000–0999Assigned ONVOY, LLC - CT 639C WESTPORT CT
2020-06-08 475-471-1XXX 1000–1999Assigned ONVOY, LLC - CT 639C WESTPORT CT
2020-06-08 475-473-8XXX 8000–8999Assigned ONVOY, LLC - CT 639C WOODBURY CT
2020-06-08 475-473-9XXX 9000–9999Assigned ONVOY, LLC - CT 639C WOODBURY CT
2020-06-08 475-500-7XXX 7000–7999Assigned ONVOY, LLC - CT 639C GREENWICH CT
2020-06-08 475-500-8XXX 8000–8999Assigned ONVOY, LLC - CT 639C GREENWICH CT

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.