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
2020-10-23 475-977-6XXX 6000–6999Assigned ONVOY, LLC - CT 639C STAMFORD CT
2020-10-23 475-977-8XXX 8000–8999Assigned ONVOY, LLC - CT 639C STAMFORD CT
2020-10-23 475-977-9XXX 9000–9999Assigned ONVOY, LLC - CT 639C STAMFORD CT
2020-10-20 475-575-5XXX 5000–5999Assigned ONVOY, LLC - CT 639C RIDGEFIELD CT
2020-10-20 475-575-7XXX 7000–7999Assigned ONVOY, LLC - CT 639C RIDGEFIELD CT
2020-10-08 475-877-0XXX 0000–0999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F REDDING CT
2020-10-07 475-455-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2020-10-07 475-455-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2020-10-05 475-284-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F BRIDGEPORT CT
2020-10-05 475-345-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F BRIDGEPORT CT
2020-10-05 475-345-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F BRIDGEPORT CT
2020-10-05 475-345-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F BRIDGEPORT CT
2020-09-25 475-262-1XXX 1000–1999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F HUNTINGTON CT
2020-09-25 475-271-9XXX 9000–9999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F MILFORD CT
2020-09-21 475-284-1XXX 1000–1999Assigned NUSO, LLC 478J BRIDGEPORT CT
2020-09-16 475-575-0XXX 0000–0999Assigned TELNYX LLC 073H RIDGEFIELD CT
2020-09-09 475-273-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 BRIDGEPORT CT
2020-09-09 475-345-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 BRIDGEPORT CT
2020-09-08 475-303-1XXX 1000–1999Assigned NUSO, LLC 478J GREENWICH CT
2020-09-01 475-473-1XXX 1000–1999Assigned TELNYX LLC 073H WOODBURY CT
2020-08-27 475-405-9XXX 9000–9999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F CHESHIRE CT
2020-08-18 475-273-4XXX 4000–4999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F BRIDGEPORT CT
2020-08-13 475-263-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F WATERBURY CT
2020-08-13 475-273-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 BRIDGEPORT CT
2020-08-13 475-557-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CT 199F WATERBURY CT
2020-08-10 475-263-7XXX 7000–7999Assigned METROPCS, INC. 5562 WATERBURY CT
2020-07-27 475-250-3XXX 3000–3999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F NORWALK CT
2020-07-27 475-263-5XXX 5000–5999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F WATERBURY CT
2020-07-27 475-267-3XXX 3000–3999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F NEW HAVEN CT
2020-07-27 475-445-0XXX 0000–0999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F NEWTOWN CT
2020-07-27 475-977-0XXX 0000–0999Assigned PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F STAMFORD CT
2020-07-23 475-330-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 FAIRFIELD CT
2020-07-23 475-377-7XXX 7000–7999Assigned FRACTEL, LLC 965H WATERBURY CT
2020-07-23 475-455-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2020-07-23 475-455-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2020-07-23 475-977-7XXX 7000–7999Assigned FRACTEL, LLC 965H STAMFORD CT
2020-07-22 475-250-1XXX 1000–1999Assigned ONVOY, LLC - CT 639C NORWALK CT
2020-07-22 475-250-2XXX 2000–2999Assigned ONVOY, LLC - CT 639C NORWALK CT
2020-07-22 475-251-4XXX 4000–4999Assigned ONVOY, LLC - CT 639C ANSONIDRBY CT
2020-07-22 475-251-7XXX 7000–7999Assigned ONVOY, LLC - CT 639C ANSONIDRBY CT
2020-07-22 475-252-4XXX 4000–4999Assigned ONVOY, LLC - CT 639C BYRAM CT
2020-07-22 475-252-5XXX 5000–5999Assigned ONVOY, LLC - CT 639C BYRAM CT
2020-07-22 475-255-2XXX 2000–2999Assigned ONVOY, LLC - CT 639C MERIDEN CT
2020-07-22 475-255-3XXX 3000–3999Assigned ONVOY, LLC - CT 639C MERIDEN CT
2020-07-22 475-262-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CT 4800 HUNTINGTON CT
2020-07-22 475-262-8XXX 8000–8999Assigned ONVOY, LLC - CT 639C HUNTINGTON CT
2020-07-22 475-262-9XXX 9000–9999Assigned ONVOY, LLC - CT 639C HUNTINGTON CT
2020-07-22 475-264-4XXX 4000–4999Assigned ONVOY, LLC - CT 639C DARIEN CT
2020-07-22 475-264-6XXX 6000–6999Assigned ONVOY, LLC - CT 639C DARIEN CT
2020-07-22 475-265-5XXX 5000–5999Assigned ONVOY, LLC - CT 639C TRUMBULL 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.