Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 21

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
—	330-266	3XXX4XXX5XXX8XXX9XXX · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH	7443	NO CANTON	OH
—	330-267	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OH	4863	HARTVILLE	OH
—	330-268	0XXX which blocks →	T-MOBILE USA, INC.	6529	CANTON	OH
—	330-269	4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	PAETEC ITEL, LLC	829J	HUBBARD	OH
—	330-270	not yet reported which blocks →	OHIO BELL TEL CO	9321	YOUNGSTOWN	OH
—	330-271	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LISBON	OH
—	330-272	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OH	4863	YOUNGSTOWN	OH
—	330-273	not yet reported which blocks →	FRONTIER NORTH, INC. - OH	0615	BRUNSWICK	OH
—	330-274	1XXX4XXX6XXX7XXX9XXX · 2 holders which blocks →	OHIO BELL TEL CO	9321	MANTUA	OH
—	330-276	8XXX9XXX which blocks →	BRIGHTSPEED OF NORTHWEST OHIO, INC.	0661	KILLBUCK	OH
—	330-277	0XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	T-MOBILE USA, INC.	6529	SALEM	OH
—	330-278	0XXX1XXX6XXX8XXX · 3 holders which blocks →	WINDSTREAM WESTERN RESERVE, INC.	0666	HINCKLEY	OH
—	330-279	not yet reported which blocks →	BRIGHTSPEED OF NORTHWEST OHIO, INC.	0661	HOLMESVL	OH
—	330-280	5XXX7XXX8XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CANTON	OH
—	330-281	0XXX2XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	T-MOBILE USA, INC.	6529	RAVENNA	OH
—	330-282	1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	BRIGHTSPEED OF NORTHWEST OHIO, INC.	0661	CORTLAND	OH
—	330-283	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	AKRON	OH
—	330-284	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CANTON	OH
—	330-285	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	AKRON	OH
—	330-286	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	PAETEC ITEL, LLC	829J	CANFIELD	OH
—	330-287	not yet reported which blocks →	BRIGHTSPEED OF NORTHWEST OHIO, INC.	0661	WOOSTER	OH
—	330-288	4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	GIRARD	OH
—	330-289	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	AKRON	OH
—	330-291	not yet reported which blocks →	SPOK, INC.	6630	AKRON	OH
—	330-292	not yet reported which blocks →	SPOK, INC.	6630	CANTON	OH
—	330-294	0XXX4XXX5XXX7XXX8XXX · 2 holders which blocks →	ONVOY, LLC - OH	464C	AKRON	OH
—	330-296	not yet reported which blocks →	OHIO BELL TEL CO	9321	RAVENNA	OH
—	330-297	not yet reported which blocks →	OHIO BELL TEL CO	9321	RAVENNA	OH
—	330-298	5XXX6XXX7XXX8XXX · 4 holders which blocks →	OHIO BELL TEL CO	9321	RAVENNA	OH
—	330-299	4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	NILES	OH
—	330-304	0XXX1XXX2XXX3XXX4XXX · 3 holders which blocks →	T-MOBILE USA, INC.	6529	MEDINA	OH
—	330-305	2XXX7XXX · 2 holders which blocks →	OHIO BELL TEL CO	9321	NO CANTON	OH
—	330-306	8XXX9XXX · 2 holders which blocks →	BRIGHTSPEED OF NORTHWEST OHIO, INC.	0661	WARREN	OH
—	330-307	0XXX2XXX which blocks →	T-MOBILE USA, INC.	6529	WARREN	OH
—	330-308	2XXX4XXX · 2 holders which blocks →	FRONTIER NORTH, INC. - OH	0615	NEWPHLDLPH	OH
—	330-309	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CANTON	OH
—	330-310	8XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	AKRON	OH
—	330-311	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	OH
—	330-314	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks →	AT&T - LOCAL	7421	YOUNGSTOWN	OH
—	330-315	not yet reported which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH	7443	AKRON	OH
—	330-316	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	CANTON	OH
—	330-318	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH	7443	YOUNGSTOWN	OH
—	330-319	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	AT&T - LOCAL	7421	AKRON	OH
—	330-320	not yet reported which blocks →	SPOK, INC.	6630	CANTON	OH
—	330-321	0XXX which blocks →	T-MOBILE USA, INC.	6529	MEDINA	OH
—	330-322	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	AKRON	OH
—	330-323	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	CANTON	OH
—	330-324	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	CANTON	OH
—	330-325	4XXX which blocks →	OHIO BELL TEL CO	9321	ROOTSTOWN	OH
—	330-326	4XXX5XXX6XXX7XXX · 4 holders which blocks →	BRIGHTSPEED OF NORTHWEST OHIO, INC.	0661	WINDHAM	OH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.