Recent prefix assignments

374 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 10/01/2026

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

Rogers Communications Canada Inc. (Wireless) 46

8X8, INC. 43

NEW CINGULAR WIRELESS PCS, LLC - DC 28

NEW CINGULAR WIRELESS PCS, LLC - IL 23

ONVOY, LLC - CA 19

New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025

Quick find in this area code:

Recent NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
—	419-531	not yet reported which blocks →	OHIO BELL TEL CO	9321	TOLEDO	OH
—	419-532	not yet reported which blocks →	KALIDA TEL. CO., INC.	0625	KALIDA	OH
—	419-533	9XXX which blocks →	BRIGHTSPEED OF NORTHWEST OHIO, INC.	0661	LIBERTYCTR	OH
—	419-534	0XXX which blocks →	OHIO BELL TEL CO	9321	TOLEDO	OH
—	419-535	2XXX which blocks →	OHIO BELL TEL CO	9321	TOLEDO	OH
—	419-536	not yet reported which blocks →	OHIO BELL TEL CO	9321	TOLEDO	OH
—	419-537	3XXX which blocks →	OHIO BELL TEL CO	9321	TOLEDO	OH
—	419-538	not yet reported which blocks →	GLANDORF TEL. CO., INC.	0619	GLANDORF	OH
—	419-539	not yet reported which blocks →	OHIO BELL TEL CO	9321	TOLEDO	OH
—	419-541	2XXX5XXX8XXX9XXX · 3 holders which blocks →	T-MOBILE USA, INC.	6529	NORWALK	OH
—	419-542	3XXX which blocks →	FRONTIER NORTH, INC. - OH	0615	HICKSVILLE	OH
—	419-543	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MANSFIELD	OH
—	419-544	5XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MANSFIELD	OH
—	419-545	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MANSFIELD	OH
—	419-547	5XXX which blocks →	FRONTIER NORTH, INC. - OH	0615	CLYDE	OH
—	419-549	1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks →	METROPCS, INC.	5562	LIMA	OH
—	419-552	1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	FREMONT	OH
—	419-553	1XXX2XXX3XXX4XXX5XXX8XXX · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	BRYAN	OH
—	419-554	3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	NORWALK	OH
—	419-555	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	DIR ASST	OH
—	419-557	0–9 XXXall 10 · 5 holders which blocks →	PAETEC ITEL, LLC	829J	SANDUSKY	OH
—	419-559	0XXX2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	FREMONT	OH
—	419-560	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	CHESTERVL	OH
—	419-561	4XXX5XXX6XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BUCYRUS	OH
—	419-562	not yet reported which blocks →	BRIGHTSPEED OF NORTHWEST OHIO, INC.	0661	BUCYRUS	OH
—	419-563	none assigned yet which blocks →	BRIGHTSPEED OF NORTHWEST OHIO, INC.	0661	BUCYRUS	OH
—	419-564	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	MANSFIELD	OH
—	419-565	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	MANSFIELD	OH
—	419-566	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	MANSFIELD	OH
—	419-568	not yet reported which blocks →	BRIGHTSPEED OF NORTHWEST OHIO, INC.	0661	WAYNESFLD	OH
—	419-569	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	BUCYRUS	OH
—	419-571	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	MANSFIELD	OH
—	419-572	2XXX3XXX4XXX5XXX · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	ARCHBOLD	OH
—	419-573	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	PT CLINTON	OH
—	419-574	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	7532	TOLEDO	OH
—	419-576	1XXX3XXX4XXX5XXX · 3 holders which blocks →	METROPCS, INC.	5562	DEFIANCE	OH
—	419-577	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	NORWALK	OH
—	419-578	8XXX which blocks →	OHIO BELL TEL CO	9321	TOLEDO	OH
—	419-579	1XXX5XXX8XXX9XXX · 3 holders which blocks →	METROPCS, INC.	5562	NAPOLEON	OH
—	419-581	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH	7158	FINDLAY	OH
—	419-582	0XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	FRONTIER NORTH, INC. - OH	0615	YORKSHIRE	OH
—	419-583	3XXX5XXX8XXX · 2 holders which blocks →	METROPCS, INC.	5562	WAUSEON	OH
—	419-584	3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	FRONTIER NORTH, INC. - OH	0615	CELINA	OH
—	419-585	1XXX4XXX8XXX9XXX · 4 holders which blocks →	FRONTIER NORTH, INC. - OH	0615	REPUBLIC	OH
—	419-586	not yet reported which blocks →	FRONTIER NORTH, INC. - OH	0615	CELINA	OH
—	419-587	none assigned yet which blocks →	CONTINENTAL OF OHIO	0607	GROVERHILL	OH
—	419-588	0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	FRONTIER NORTH, INC. - OH	0615	BERLIN HTS	OH
—	419-589	not yet reported which blocks →	BRIGHTSPEED OF NORTHWEST OHIO, INC.	0661	MANSFIELD	OH
—	419-591	6XXX8XXX9XXX which blocks →	BRIGHTSPEED OF NORTHWEST OHIO, INC.	0661	NAPOLEON	OH
—	419-592	not yet reported which blocks →	BRIGHTSPEED OF NORTHWEST OHIO, INC.	0661	NAPOLEON	OH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 10/01/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.