Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 920

U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 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
—	920-329	1XXX2XXX3XXX4XXX5XXX8XXX · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GREEN LAKE	WI
—	920-330	not yet reported which blocks →	WISCONSIN BELL INC	9327	DE PERE	WI
—	920-331	4XXX7XXX8XXX9XXX · 4 holders which blocks →	METROPCS, INC.	5562	SHEBOYGAN	WI
—	920-332	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC WI	7216	BRANDON	WI
—	920-334	not yet reported which blocks →	NEW CELL DBA CELLCOM	6692	SHEBOYGAN	WI
—	920-335	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - WI	225C	SHEBOGNFLS	WI
—	920-336	not yet reported which blocks →	WISCONSIN BELL INC	9327	DE PERE	WI
—	920-337	not yet reported which blocks →	WISCONSIN BELL INC	9327	DE PERE	WI
—	920-338	not yet reported which blocks →	WISCONSIN BELL INC	9327	DE PERE	WI
—	920-339	not yet reported which blocks →	WISCONSIN BELL INC	9327	DE PERE	WI
—	920-345	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC WI	7216	WAUPUN	WI
—	920-346	1XXX3XXX4XXX7XXX · 3 holders which blocks →	BRIGHTSPEED OF EASTERN WISCONSIN, LLC	0877	BRANDON	WI
—	920-347	0–9 XXXall 10 · 2 holders which blocks →	TDS METROCOM, LLC	520K	DE PERE	WI
—	920-348	1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks →	BRIGHTSPEED OF SOUTHERN WISCONSIN, LLC	0931	CAMBRIA	WI
—	920-349	0XXX1XXX2XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	FRONTIER NORTH INC. - WI	0886	HUSTISFORD	WI
—	920-351	3XXX4XXX5XXX8XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	DE PERE	WI
—	920-356	5XXX7XXX · 2 holders which blocks →	WISCONSIN BELL INC	9327	BEAVER DAM	WI
—	920-359	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	NEW LONDON	WI
—	920-360	none assigned yet which blocks →	UNITED STATES CELLULAR - WI	6274	GREEN BAY	WI
—	920-361	8XXX which blocks →	BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC	0924	BERLIN	WI
—	920-362	none assigned yet which blocks →	UNITED STATES CELLULAR - WI	6274	GREEN BAY	WI
—	920-364	0–9 XXXall 10 · 3 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	APPLETON	WI
—	920-366	none assigned yet which blocks →	UNITED STATES CELLULAR - WI	6274	GREEN BAY	WI
—	920-369	1XXX2XXX6XXX7XXX8XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GREEN LAKE	WI
—	920-370	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	UNITED STATES CELLULAR - WI	6274	GREEN BAY	WI
—	920-371	5XXX9XXX · 2 holders which blocks →	T-MOBILE USA, INC.	6529	GREEN BAY	WI
—	920-372	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	UNITED STATES CELLULAR - WI	6274	KAUKAUNA	WI
—	920-373	not yet reported which blocks →	NEW CELL DBA CELLCOM	6692	ABRAMS	WI
—	920-374	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	T-MOBILE USA, INC.	6529	MANITOWOC	WI
—	920-375	1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	T-MOBILE USA, INC.	6529	FONDDU LAC	WI
—	920-376	1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	METROPCS, INC.	5562	OSHKOSH	WI
—	920-377	2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	METROPCS, INC.	5562	SHEBOYGAN	WI
—	920-378	7XXX8XXX9XXX · 2 holders which blocks →	METROPCS, INC.	5562	APPLETON	WI
—	920-379	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	OSHKOSH	WI
—	920-380	not yet reported which blocks →	WISCONSIN BELL INC	9327	APPLETON	WI
—	920-386	6XXX7XXX8XXX · 3 holders which blocks →	WISCONSIN BELL INC	9327	JUNEAU	WI
—	920-387	8XXX which blocks →	WISCONSIN BELL INC	9327	MAYVILLE	WI
—	920-388	1XXX6XXX9XXX · 3 holders which blocks →	WISCONSIN BELL INC	9327	KEWAUNEE	WI
—	920-389	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	NEW LONDON	WI
—	920-390	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WATERTOWN	WI
—	920-391	1XXX5XXX8XXX9XXX · 2 holders which blocks →	WISCONSIN BELL INC	9327	GREEN BAY	WI
—	920-392	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	BEAVER DAM	WI
—	920-394	1XXX4XXX5XXX7XXX8XXX · 4 holders which blocks →	BRIGHTSPEED OF CENTRAL WISCONSIN, LLC	1159	KINGSTON	WI
—	920-398	0XXX6XXX7XXX · 2 holders which blocks →	BRIGHTSPEED OF CENTRAL WISCONSIN, LLC	1159	MARKESAN	WI
—	920-402	1XXX7XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WEYAUWEGA	WI
—	920-403	0XXX which blocks →	WISCONSIN BELL INC	9327	DE PERE	WI
—	920-405	not yet reported which blocks →	WISCONSIN BELL INC	9327	GREEN BAY	WI
—	920-406	not yet reported which blocks →	WISCONSIN BELL INC	9327	GREEN BAY	WI
—	920-407	none assigned yet which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WEYAUWEGA	WI
—	920-408	0XXX1XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WEYAUWEGA	WI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.