Recent prefix assignments

2 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, last 30 days — NPA 959

ONVOY, LLC - CT 1

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 NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
2026-09-15	959-994	0XXX which blocks →	ONVOY, LLC - CT	639C	PLAINVILLE	CT
2026-08-26	959-996	8XXX9XXX which blocks →	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	MIDDLETOWN	CT
2026-07-31	959-286	0XXX1XXX9XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	TORRINGTON	CT
2026-07-24	959-997	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - CT	639C	HARTFORD	CT
2026-06-10	959-956	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	GLASTONBY	CT
2026-05-18	959-285	0XXX1XXX2XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	SOUTHINGTN	CT
2026-03-12	959-284	0XXX1XXX which blocks →	ONVOY, LLC - CT	639C	MYSTIC	CT
2026-02-04	959-281	1XXX2XXX3XXX which blocks →	ONVOY, LLC - CT	639C	NEW LONDON	CT
2026-01-29	959-279	0–9 XXXall 10 · 4 holders which blocks →	WAVENATION, LLC	700J	HARTFORD	CT
2026-01-23	959-280	0–9 XXXall 10 · 3 holders which blocks →	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	671J	HARTFORD	CT
2025-08-06	959-278	0–9 XXXall 10 · 4 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	HARTFORD	CT
2025-06-09	959-277	0XXX1XXX7XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	NORWICH	CT
2025-06-05	959-276	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	HARTFORD	CT
2025-03-13	959-275	0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - CT	639C	FARMINGTON	CT
2025-02-26	959-274	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	HARTFORD	CT
2025-01-30	959-273	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	HARTFORD	CT
2024-10-07	959-270	0–9 XXXwhole prefix which blocks →	EON TELECOM, INC.	839J	BRISTOL	CT
2024-10-07	959-272	0–9 XXXwhole prefix which blocks →	EON TELECOM, INC.	839J	CLINTON	CT
2024-06-12	959-268	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	IP HORIZON LLC	515J	GLASTONBY	CT
2024-05-01	959-267	0XXX1XXX2XXX3XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - CT	639C	BRISTOL	CT
2024-03-28	959-264	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - CT	639C	NEW LONDON	CT
2024-03-27	959-263	0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	DEEP RIVER	CT
2024-03-20	959-988	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	TORRINGTON	CT
2024-03-14	959-262	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	HARTFORD	CT
2024-03-01	959-260	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WILLIMNTIC	CT
2024-01-25	959-259	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - CT	639C	HARTFORD	CT
2024-01-11	959-258	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	HARTFORD	CT
2023-09-21	959-257	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	HARTFORD	CT
2023-09-06	959-256	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CT	639C	HARTFORD	CT
2023-07-26	959-253	0XXX2XXX4XXX5XXX9XXX · 4 holders which blocks →	ONVOY, LLC - CT	639C	PLAINFIELD	CT
2023-07-26	959-254	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - CT	639C	NORWICH	CT
2023-07-07	959-252	0XXX1XXX2XXX8XXX9XXX which blocks →	ONVOY, LLC - CT	639C	ROCKVILLE	CT
2023-07-05	959-250	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - CT	639C	MANCHESTER	CT
2023-06-09	959-203	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - CT	639C	FARMINGTON	CT
2023-03-10	959-248	0–9 XXXall 10 · 3 holders which blocks →	NUSO, LLC	732J	HARTFORD	CT
2023-01-25	959-247	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	NORWICH	CT
2023-01-06	959-246	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	MIDDLETOWN	CT
2022-12-06	959-240	0–9 XXXall 10 · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CT	7143	HARTFORD	CT
2022-10-04	959-249	0XXX1XXX2XXX3XXX4XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CT	199F	CANAAN	CT
2022-09-15	959-238	0–9 XXXall 10 · 4 holders which blocks →	NUSO, LLC	732J	PUTNAM	CT
2022-07-07	959-678	0XXX9XXX · 2 holders which blocks →	AT&T - LOCAL	7421	KILLINGWTH	CT
2022-03-17	959-559	0–9 XXXall 10 · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	MIDDLETOWN	CT
2022-03-17	959-595	0–9 XXXall 10 · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	SOUTHINGTN	CT
2022-03-04	959-590	0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	BARR TEL USA, INC. - CT	866H	NEWBRITAIN	CT
2022-03-04	959-885	0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	BARR TEL USA, INC. - CT	866H	ENFIELD	CT
2022-02-28	959-288	0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	ENFIELD	CT
2022-02-17	959-716	0–9 XXXall 10 · 6 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	NEW LONDON	CT
2022-02-04	959-283	0–9 XXXall 10 · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	GLASTONBY	CT
2022-02-04	959-799	0–9 XXXall 10 · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	TORRINGTON	CT
2022-01-27	959-759	0–9 XXXall 10 · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	DEEP RIVER	CT

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.