Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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

8X8, INC. 43

NEW CINGULAR WIRELESS PCS, LLC - DC 26

Rogers Communications Canada Inc. (Wireless) 23

NEW CINGULAR WIRELESS PCS, LLC - IL 22

ONVOY, LLC - CA 19

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
—	607-241	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	YMAX COMMUNICATIONS CORP. - NY	282E	ITHACA	NY
—	607-242	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks →	TC SYSTEMS, INC. - NY	7140	BINGHAMTON	NY
—	607-243	4XXX6XXX · 2 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	DUNDEE	NY
—	607-245	0XXX1XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	BINGHAMTON	NY
—	607-246	0–9 XXXwhole prefix which blocks →	ONVOY, LLC- NY	384C	HAMMONDSPT	NY
—	607-248	9XXX which blocks →	VERIZON NEW YORK, INC.	9104	CORNING	NY
—	607-249	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks →	TC SYSTEMS, INC. - NY	7140	WAVERLY	NY
—	607-250	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks →	TC SYSTEMS, INC. - NY	7140	CORTLAND	NY
—	607-251	0XXX1XXX2XXX3XXX4XXX8XXX · 4 holders which blocks →	TC SYSTEMS, INC. - NY	7140	BINGHAMTON	NY
—	607-252	0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	TC SYSTEMS, INC. - NY	7140	ITHACA	NY
—	607-253	not yet reported which blocks →	TC SYSTEMS, INC. - NY	7140	ITHACA	NY
—	607-254	0XXX which blocks →	VERIZON NEW YORK, INC.	9104	ITHACA	NY
—	607-255	not yet reported which blocks →	TC SYSTEMS, INC. - NY	7140	ITHACA	NY
—	607-256	1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	VERIZON NEW YORK, INC.	9104	ITHACA	NY
—	607-257	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	ITHACA	NY
—	607-259	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ELMIRA	NY
—	607-261	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	CORTLAND	NY
—	607-262	1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	ITHACA	NY
—	607-263	0XXX3XXX4XXX7XXX8XXX · 3 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	MORRIS	NY
—	607-264	0XXX2XXX4XXX5XXX6XXX7XXX · 4 holders which blocks →	VERIZON NEW YORK, INC.	9104	CHERRY VLY	NY
—	607-265	0XXX1XXX4XXX5XXX · 2 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	MASONVILLE	NY
—	607-266	1XXX6XXX which blocks →	VERIZON NEW YORK, INC.	9104	ITHACA	NY
—	607-268	2XXX4XXX8XXX9XXX · 3 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	PRATTSBURG	NY
—	607-269	1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	VERIZON NEW YORK, INC.	9104	ITHACA	NY
—	607-271	0XXX1XXX5XXX6XXX · 4 holders which blocks →	VERIZON NEW YORK, INC.	9104	ELMIRA	NY
—	607-272	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	ITHACA	NY
—	607-273	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	ITHACA	NY
—	607-274	0XXX which blocks →	VERIZON NEW YORK, INC.	9104	ITHACA	NY
—	607-275	4XXX5XXX8XXX · 2 holders which blocks →	VERIZON NEW YORK, INC.	9104	ITHACA	NY
—	607-276	0XXX1XXX3XXX4XXX7XXX · 2 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	ALMOND	NY
—	607-277	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	ITHACA	NY
—	607-278	0XXX1XXX2XXX3XXX4XXX8XXX · 5 holders which blocks →	VERIZON NEW YORK, INC.	9104	DAVENPORT	NY
—	607-279	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ITHACA	NY
—	607-280	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ITHACA	NY
—	607-281	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	VERIZON NEW YORK, INC.	9104	HORNELL	NY
—	607-284	0–9 XXXall 10 · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	WAYNE	NY
—	607-286	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks →	VERIZON NEW YORK, INC.	9104	MILFORD	NY
—	607-287	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ONEONTA	NY
—	607-288	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	ITHACA	NY
—	607-289	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC- NY	384C	CORTLAND	NY
—	607-290	0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	ROSCOE	NY
—	607-291	0XXX2XXX3XXX4XXX7XXX · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	ETNA	NY
—	607-292	0XXX1XXX2XXX4XXX5XXX8XXX · 3 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	WAYNE	NY
—	607-293	0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 6 holders which blocks →	VERIZON NEW YORK, INC.	9104	HARTWICK	NY
—	607-294	0XXX4XXX9XXX · 3 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	INTERLAKEN	NY
—	607-295	0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 6 holders which blocks →	VERIZON NEW YORK, INC.	9104	ARKPORT	NY
—	607-299	3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	CORTLAND	NY
—	607-300	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC- NY	384C	AVOCA	NY
—	607-310	0XXX1XXX8XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	CORTLAND	NY
—	607-311	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.