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

Recent thousands-block assignments
Assigned	Thousands-block	Last 4 digits	Status	Assignee	OCN	Rate center	State
2015-03-11	475-240-5XXX	5000–5999	Assigned	TC SYSTEMS, INC. - NY	7140	GREENWICH	CT
2015-03-11	475-240-6XXX	6000–6999	Assigned	TC SYSTEMS, INC. - NY	7140	GREENWICH	CT
2015-03-11	475-240-7XXX	7000–7999	Assigned	TC SYSTEMS, INC. - NY	7140	GREENWICH	CT
2015-03-11	475-240-8XXX	8000–8999	Assigned	TC SYSTEMS, INC. - NY	7140	GREENWICH	CT
2015-03-11	475-240-9XXX	9000–9999	Assigned	TC SYSTEMS, INC. - NY	7140	GREENWICH	CT
2015-03-05	475-208-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	NORWALK	CT
2015-03-05	475-208-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	NORWALK	CT
2015-03-05	475-208-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	NORWALK	CT
2015-03-05	475-299-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	STAMFORD	CT
2015-03-05	475-299-6XXX	6000–6999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	STAMFORD	CT
2015-03-05	475-299-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	STAMFORD	CT
2015-03-05	475-988-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	BRIDGEPORT	CT
2015-03-04	475-619-9XXX	9000–9999	Assigned	CSC VOICE, LLC	612K	STAMFORD	CT
2015-02-24	475-206-9XXX	9000–9999	Assigned	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	DANBURY	CT
2015-02-04	475-988-9XXX	9000–9999	Assigned	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	BRIDGEPORT	CT
2015-01-30	475-689-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	WATERBURY	CT
2015-01-23	475-655-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	NEW HAVEN	CT
2015-01-23	475-655-9XXX	9000–9999	Assigned	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	NEW HAVEN	CT
2015-01-22	475-299-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	STAMFORD	CT
2015-01-22	475-299-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	STAMFORD	CT
2015-01-22	475-299-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	STAMFORD	CT
2015-01-22	475-299-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	STAMFORD	CT
2015-01-22	475-299-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	STAMFORD	CT
2015-01-22	475-441-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	NEW HAVEN	CT
2015-01-19	475-449-6XXX	6000–6999	Assigned	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	BRIDGEPORT	CT
2015-01-19	475-449-7XXX	7000–7999	Assigned	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	BRIDGEPORT	CT
2015-01-19	475-619-0XXX	0000–0999	Assigned	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	STAMFORD	CT
2015-01-19	475-619-1XXX	1000–1999	Assigned	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	STAMFORD	CT
2015-01-15	475-208-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	NORWALK	CT
2015-01-15	475-289-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	DANBURY	CT
2015-01-15	475-449-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	BRIDGEPORT	CT
2015-01-12	475-215-0XXX	0000–0999	Assigned	BANDWIDTH.COM CLEC, LLC - CT	199F	RIDGEFIELD	CT
2015-01-07	475-434-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	NEW HAVEN	CT
2015-01-07	475-434-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	NEW HAVEN	CT
2015-01-07	475-434-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	NEW HAVEN	CT
2015-01-02	475-343-1XXX	1000–1999	Assigned	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	MERIDEN	CT
2014-12-29	475-343-0XXX	0000–0999	Assigned	METROPCS, INC.	5562	MERIDEN	CT
2014-12-29	475-343-9XXX	9000–9999	Assigned	METROPCS, INC.	5562	MERIDEN	CT
2014-12-29	475-619-6XXX	6000–6999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - CT	7143	STAMFORD	CT
2014-12-29	475-689-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	WATERBURY	CT
2014-12-23	475-434-3XXX	3000–3999	Assigned	METROPCS, INC.	5562	NEW HAVEN	CT
2014-12-22	475-221-2XXX	2000–2999	Assigned	BANDWIDTH.COM CLEC, LLC - CT	199F	BRANFORD	CT
2014-12-22	475-221-3XXX	3000–3999	Assigned	BANDWIDTH.COM CLEC, LLC - CT	199F	BRANFORD	CT
2014-12-12	475-777-1XXX	1000–1999	Assigned	BANDWIDTH.COM CLEC, LLC - CT	199F	ANSONIDRBY	CT
2014-12-12	475-777-2XXX	2000–2999	Assigned	BANDWIDTH.COM CLEC, LLC - CT	199F	ANSONIDRBY	CT
2014-12-09	475-208-2XXX	2000–2999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - CT	4800	NORWALK	CT
2014-12-05	475-777-0XXX	0000–0999	Assigned	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	ANSONIDRBY	CT
2014-12-03	475-325-0XXX	0000–0999	Assigned	BANDWIDTH.COM CLEC, LLC - CT	199F	GEORGETOWN	CT
2014-12-03	475-325-1XXX	1000–1999	Assigned	BANDWIDTH.COM CLEC, LLC - CT	199F	GEORGETOWN	CT
2014-12-01	475-289-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	DANBURY	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.