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
2023-12-08	475-447-0XXX	0000–0999	Assigned	ONVOY, LLC - CT	639C	BYRAM	CT
2023-12-08	475-673-0XXX	0000–0999	Assigned	ONVOY, LLC - CT	639C	NORWALK	CT
2023-12-08	475-673-1XXX	1000–1999	Assigned	ONVOY, LLC - CT	639C	NORWALK	CT
2023-12-08	475-867-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	DANBURY	CT
2023-12-08	475-867-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	DANBURY	CT
2023-11-29	475-318-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	NEW HAVEN	CT
2023-11-29	475-318-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	NEW HAVEN	CT
2023-11-29	475-318-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	NEW HAVEN	CT
2023-11-29	475-318-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	NEW HAVEN	CT
2023-11-29	475-318-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	NEW HAVEN	CT
2023-11-29	475-341-5XXX	5000–5999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WATERBURY	CT
2023-11-24	475-334-5XXX	5000–5999	Assigned	COMMIO, LLC	939H	STAMFORD	CT
2023-11-24	475-334-6XXX	6000–6999	Assigned	COMMIO, LLC	939H	STAMFORD	CT
2023-11-24	475-334-7XXX	7000–7999	Assigned	COMMIO, LLC	939H	STAMFORD	CT
2023-11-24	475-334-8XXX	8000–8999	Assigned	COMMIO, LLC	939H	STAMFORD	CT
2023-11-24	475-334-9XXX	9000–9999	Assigned	COMMIO, LLC	939H	STAMFORD	CT
2023-11-24	475-867-1XXX	1000–1999	Assigned	COMMIO, LLC	939H	DANBURY	CT
2023-11-24	475-867-2XXX	2000–2999	Assigned	COMMIO, LLC	939H	DANBURY	CT
2023-11-13	475-344-9XXX	9000–9999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BRIDGEPORT	CT
2023-10-19	475-344-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	BRIDGEPORT	CT
2023-10-19	475-544-4XXX	4000–4999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NORWALK	CT
2023-10-18	475-832-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	WILTON	CT
2023-10-11	475-341-6XXX	6000–6999	Assigned	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	WATERBURY	CT
2023-10-11	475-341-7XXX	7000–7999	Assigned	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	WATERBURY	CT
2023-10-11	475-341-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	WATERBURY	CT
2023-10-11	475-341-9XXX	9000–9999	Assigned	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	WATERBURY	CT
2023-10-11	475-501-9XXX	9000–9999	Assigned	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	GEORGETOWN	CT
2023-10-05	475-290-9XXX	9000–9999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	DANBURY	CT
2023-10-05	475-867-0XXX	0000–0999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	DANBURY	CT
2023-09-15	475-326-2XXX	2000–2999	Assigned	ONVOY, LLC - CT	639C	WATERBURY	CT
2023-09-15	475-326-3XXX	3000–3999	Assigned	ONVOY, LLC - CT	639C	WATERBURY	CT
2023-09-15	475-326-4XXX	4000–4999	Assigned	ONVOY, LLC - CT	639C	WATERBURY	CT
2023-09-15	475-326-5XXX	5000–5999	Assigned	ONVOY, LLC - CT	639C	WATERBURY	CT
2023-09-15	475-326-6XXX	6000–6999	Assigned	ONVOY, LLC - CT	639C	WATERBURY	CT
2023-09-15	475-326-7XXX	7000–7999	Assigned	ONVOY, LLC - CT	639C	WATERBURY	CT
2023-09-15	475-327-0XXX	0000–0999	Assigned	ONVOY, LLC - CT	639C	MILFORD	CT
2023-09-15	475-327-1XXX	1000–1999	Assigned	ONVOY, LLC - CT	639C	MILFORD	CT
2023-09-15	475-327-9XXX	9000–9999	Assigned	ONVOY, LLC - CT	639C	MILFORD	CT
2023-09-15	475-337-5XXX	5000–5999	Assigned	ONVOY, LLC - CT	639C	WATERBURY	CT
2023-09-15	475-356-8XXX	8000–8999	Assigned	ONVOY, LLC - CT	639C	BRIDGEPORT	CT
2023-09-15	475-466-1XXX	1000–1999	Assigned	ONVOY, LLC - CT	639C	MADISON	CT
2023-09-15	475-466-2XXX	2000–2999	Assigned	ONVOY, LLC - CT	639C	MADISON	CT
2023-09-15	475-466-7XXX	7000–7999	Assigned	ONVOY, LLC - CT	639C	MADISON	CT
2023-09-15	475-832-3XXX	3000–3999	Assigned	ONVOY, LLC - CT	639C	WILTON	CT
2023-09-15	475-832-5XXX	5000–5999	Assigned	ONVOY, LLC - CT	639C	WILTON	CT
2023-09-15	475-832-6XXX	6000–6999	Assigned	ONVOY, LLC - CT	639C	WILTON	CT
2023-09-15	475-832-7XXX	7000–7999	Assigned	ONVOY, LLC - CT	639C	WILTON	CT
2023-09-15	475-832-8XXX	8000–8999	Assigned	ONVOY, LLC - CT	639C	WILTON	CT
2023-09-14	475-203-0XXX	0000–0999	Assigned	ONVOY, LLC - CT	639C	WALLINGFD	CT
2023-09-14	475-288-7XXX	7000–7999	Assigned	ONVOY, LLC - CT	639C	NORWALK	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.