NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

25 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 17
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2022-01-13 475-466-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J MADISON CT
2022-01-13 475-887-5XXX 5000–5999Assigned TON80 COMMUNICATIONS, LLC 516J WESTPORT CT
2022-01-10 475-673-2XXX 2000–2999Assigned TON80 COMMUNICATIONS, LLC 516J NORWALK CT
2022-01-10 475-832-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J WILTON CT
2022-01-07 475-315-2XXX 2000–2999Assigned ONVOY, LLC - CT 639C CHESHIRE CT
2022-01-07 475-315-3XXX 3000–3999Assigned ONVOY, LLC - CT 639C CHESHIRE CT
2022-01-07 475-342-5XXX 5000–5999Assigned TON80 COMMUNICATIONS, LLC 516J ANSONIDRBY CT
2022-01-07 475-447-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H BYRAM CT
2022-01-07 475-447-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H BYRAM CT
2022-01-07 475-746-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J STAMFORD CT
2022-01-06 475-296-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J DANBURY CT
2022-01-06 475-946-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H OLDGRNWICH CT
2022-01-06 475-946-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H OLDGRNWICH CT
2022-01-05 475-277-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H WILTON CT
2022-01-05 475-472-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H WILTON CT
2022-01-05 475-758-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H NEW CANAAN CT
2022-01-05 475-758-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H NEW CANAAN CT
2021-12-29 475-297-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H NEWTOWN CT
2021-12-29 475-297-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H NEWTOWN CT
2021-12-29 475-310-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H WALLINGFD CT
2021-12-29 475-310-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H WALLINGFD CT
2021-12-29 475-315-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H CHESHIRE CT
2021-12-29 475-315-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H CHESHIRE CT
2021-12-29 475-410-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H WOODBURY CT
2021-12-29 475-410-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H WOODBURY CT
2021-12-23 475-290-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H DANBURY CT
2021-12-23 475-290-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H DANBURY CT
2021-12-23 475-305-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H WATERBURY CT
2021-12-23 475-305-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H WATERBURY CT
2021-12-22 475-264-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H DARIEN CT
2021-12-22 475-264-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H DARIEN CT
2021-12-21 475-304-8XXX 8000–8999Assigned ONVOY, LLC - CT 639C HUNTINGTON CT
2021-12-21 475-307-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H MERIDEN CT
2021-12-21 475-307-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H MERIDEN CT
2021-12-21 475-310-3XXX 3000–3999Assigned ONVOY, LLC - CT 639C WALLINGFD CT
2021-12-21 475-320-3XXX 3000–3999Assigned ONVOY, LLC - CT 639C ANSONIDRBY CT
2021-12-21 475-320-4XXX 4000–4999Assigned ONVOY, LLC - CT 639C ANSONIDRBY CT
2021-12-14 475-303-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H GREENWICH CT
2021-12-14 475-474-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H TRUMBULL CT
2021-12-03 475-320-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2021-12-03 475-320-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2021-12-03 475-320-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2021-12-03 475-320-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2021-12-03 475-320-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2021-12-02 475-272-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 FAIRFIELD CT
2021-12-02 475-302-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRIDGEPORT CT
2021-12-02 475-309-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2021-12-02 475-309-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2021-12-02 475-309-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2021-12-02 475-501-6XXX 6000–6999Assigned METROPCS, INC. 5562 GEORGETOWN 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.