Recent prefix assignments

354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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. 39

NEW CINGULAR WIRELESS PCS, LLC - IL 28

ONVOY, LLC - CA 27

NEW CINGULAR WIRELESS PCS, LLC - DC 26

ONVOY, LLC - NJ 20

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
—	715-376	1XXX5XXX7XXX8XXX · 3 holders which blocks →	BRIGHTSPEED OF NORTHWEST WISCONSIN, LLC	0950	GORDON	WI
—	715-377	not yet reported which blocks →	WISCONSIN BELL INC	9327	HUDSON	WI
—	715-378	0XXX1XXX5XXX7XXX8XXX · 4 holders which blocks →	BRIGHTSPEED OF NORTHWEST WISCONSIN, LLC	0950	SOLON SPG	WI
—	715-379	none assigned yet which blocks →	AERIAL COMMUNICATIONS, INC.	6701	EAU CLAIRE	WI
—	715-381	not yet reported which blocks →	WISCONSIN BELL INC	9327	HUDSON	WI
—	715-382	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	BRIGHTSPEED OF NORTHERN WISCONSIN, LLC	0956	JIM FALLS	WI
—	715-383	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	FRONTIER NORTH INC. - WI	0886	MARSHFIELD	WI
—	715-384	not yet reported which blocks →	FRONTIER NORTH INC. - WI	0886	MARSHFIELD	WI
—	715-385	1XXX5XXX7XXX8XXX · 4 holders which blocks →	BRIGHTSPEED OF NORTHERN WISCONSIN, LLC	0956	BOULDERJCT	WI
—	715-386	not yet reported which blocks →	WISCONSIN BELL INC	9327	HUDSON	WI
—	715-387	not yet reported which blocks →	FRONTIER NORTH INC. - WI	0886	MARSHFIELD	WI
—	715-389	not yet reported which blocks →	FRONTIER NORTH INC. - WI	0886	MARSHFIELD	WI
—	715-392	not yet reported which blocks →	BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC	0924	SUPERIOR	WI
—	715-394	not yet reported which blocks →	BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC	0924	SUPERIOR	WI
—	715-395	not yet reported which blocks →	BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC	0924	SUPERIOR	WI
—	715-397	not yet reported which blocks →	WISCONSIN BELL INC	9327	EAU CLAIRE	WI
—	715-398	1XXX9XXX · 2 holders which blocks →	BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC	0924	SUPERIOR	WI
—	715-399	1XXX4XXX9XXX · 3 holders which blocks →	BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC	0924	SUPERIOR	WI
—	715-402	1XXX2XXX3XXX4XXX5XXX6XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PEPIN	WI
—	715-403	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LADYSMITH	WI
—	715-404	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	JIM FALLS	WI
—	715-405	none assigned yet which blocks →	LAKELAND COMMUNICATIONS GROUP, LLC	0769	BALSAMLAKE	WI
—	715-411	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	WI
—	715-412	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WAUPACA	WI
—	715-415	8XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	LADYSMITH	WI
—	715-421	none assigned yet which blocks →	WOOD COUNTY TEL. CO.	0974	WISCOSNRPD	WI
—	715-422	not yet reported which blocks →	WOOD COUNTY TEL. CO.	0974	WISCOSNRPD	WI
—	715-423	not yet reported which blocks →	WOOD COUNTY TEL. CO.	0974	WISCOSNRPD	WI
—	715-424	not yet reported which blocks →	WOOD COUNTY TEL. CO.	0974	WISCOSNRPD	WI
—	715-425	not yet reported which blocks →	WISCONSIN BELL INC	9327	RIVERFALLS	WI
—	715-426	not yet reported which blocks →	WISCONSIN BELL INC	9327	RIVERFALLS	WI
—	715-427	7XXX which blocks →	FRONTIER COMMUNICATIONS OF WISCONSIN LLC	0870	RIB LAKE	WI
—	715-428	none assigned yet which blocks →	PRICE COUNTY TEL. CO.	0937	PRENTICE	WI
—	715-429	none assigned yet which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	STANLEY	WI
—	715-434	not yet reported which blocks →	CTC TELCOM, INC.	7998	RICE LAKE	WI
—	715-435	not yet reported which blocks →	WOOD COUNTY TEL. CO.	0974	RUDOLPH	WI
—	715-440	1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	MENOMONIE	WI
—	715-442	9XXX which blocks →	TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK	1155	PEPIN	WI
—	715-443	0XXX4XXX5XXX7XXX8XXX · 5 holders which blocks →	FRONTIER NORTH INC. - WI	0886	MARATHON	WI
—	715-445	1XXX6XXX which blocks →	SCANDINAVIA TEL. CO.	0945	IOLA	WI
—	715-446	0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	FRONTIER NORTH INC. - WI	0886	HATLEY	WI
—	715-447	0XXX1XXX2XXX3XXX4XXX7XXX9XXX · 5 holders which blocks →	BRIGHTSPEED OF NORTHERN WISCONSIN, LLC	0956	GILMAN	WI
—	715-448	0XXX1XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK	1155	MAIDENROCK	WI
—	715-449	0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	FRONTIER NORTH INC. - WI	0886	BIRNAMWOOD	WI
—	715-450	7XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	EAU CLAIRE	WI
—	715-451	2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks →	UNITED STATES CELLULAR - WI	6274	WISCOSNRPD	WI
—	715-452	1XXX3XXX4XXX9XXX · 3 holders which blocks →	BRIGHTSPEED OF NORTHERN WISCONSIN, LLC	0956	SHELDON	WI
—	715-453	not yet reported which blocks →	FRONTIER NORTH INC. - WI	0886	TOMAHAWK	WI
—	715-454	none assigned yet which blocks →	WITTENBERG TEL. CO.	0973	ELDERON	WI
—	715-455	not yet reported which blocks →	CHIBARDUN TEL. COOP., INC.	0861	PRAIRIFARM	WI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.