Recent prefix assignments

349 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31

ONVOY, LLC - CA 27

NEW CINGULAR WIRELESS PCS, LLC - IL 27

ONVOY, LLC - NJ 15

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
—	715-281	none assigned yet which blocks →	UNITED STATES CELLULAR - WI	6274	WAUPACA	WI
—	715-282	0XXX1XXX2XXX3XXX4XXX8XXX · 6 holders which blocks →	FRONTIER COMMUNICATIONS OF WISCONSIN LLC	0870	CRESCENTLK	WI
—	715-283	none assigned yet which blocks →	WEST WISCONSIN TELCOM COOP., INC.	0971	EAU GALLE	WI
—	715-284	none assigned yet which blocks →	BRIGHTSPEED OF CENTRAL WISCONSIN, LLC	1159	BLCKRIVFLS	WI
—	715-285	none assigned yet which blocks →	NELSON COMMUNICATIONS COOPERATIVE	0918	ARKANSAW	WI
—	715-286	0XXX3XXX6XXX8XXX9XXX · 3 holders which blocks →	BRIGHTSPEED OF CENTRAL WISCONSIN, LLC	1159	AUGUSTA	WI
—	715-287	not yet reported which blocks →	TRI-COUNTY TEL. COOP., INC.	0960	ELEVA	WI
—	715-288	1XXX2XXX7XXX8XXX9XXX · 4 holders which blocks →	BRIGHTSPEED OF NORTHERN WISCONSIN, LLC	0956	EAGLEPOINT	WI
—	715-289	0XXX1XXX2XXX6XXX7XXX8XXX · 3 holders which blocks →	BRIGHTSPEED OF WESTERN WISCONSIN, LLC	0922	CADOTT	WI
—	715-290	1XXX3XXX7XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	SHELDON	WI
—	715-292	5XXX6XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ASHLAND	WI
—	715-294	0XXX8XXX9XXX · 3 holders which blocks →	BRIGHTSPEED OF NORTHWEST WISCONSIN, LLC	0950	OSCEOLA	WI
—	715-295	4XXX6XXX · 2 holders which blocks →	WISCONSIN BELL INC	9327	STEVENS PT	WI
—	715-296	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	RICE LAKE	WI
—	715-297	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WAUSAU	WI
—	715-298	0–9 XXXwhole prefix which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	WAUSAU	WI
—	715-299	none assigned yet which blocks →	UNITED STATES CELLULAR - WI	6274	BLCKRIVFLS	WI
—	715-305	none assigned yet which blocks →	UNITED STATES CELLULAR - WI	6274	MARSHFIELD	WI
—	715-306	none assigned yet which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	STANLEY	WI
—	715-307	3XXX4XXX6XXX7XXX8XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	RIVERFALLS	WI
—	715-308	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	MENOMONIE	WI
—	715-310	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	STEVENS PT	WI
—	715-311	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	WI
—	715-317	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PLUM CITY	WI
—	715-318	not yet reported which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	EAU CLAIRE	WI
—	715-319	0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	SUPERIOR	WI
—	715-321	not yet reported which blocks →	NEW CELL DBA CELLCOM	6692	STEVENS PT	WI
—	715-322	0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 3 holders which blocks →	BRIGHTSPEED OF NORTHERN WISCONSIN, LLC	0956	GLEN FLORA	WI
—	715-323	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WISCOSNRPD	WI
—	715-324	0XXX1XXX3XXX4XXX · 3 holders which blocks →	BRIGHTSPEED OF WESTERN WISCONSIN, LLC	0841	PEMBINE	WI
—	715-325	not yet reported which blocks →	WOOD COUNTY TEL. CO.	0974	WISCOSNRPD	WI
—	715-327	3XXX7XXX · 2 holders which blocks →	BRIGHTSPEED OF NORTHWEST WISCONSIN, LLC	0950	FREDERIC	WI
—	715-329	1XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	HURLEY	WI
—	715-331	1XXX7XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	BAYFIELD	WI
—	715-332	none assigned yet which blocks →	PRICE COUNTY TEL. CO.	0937	SOO LAKE	WI
—	715-333	0XXX1XXX3XXX4XXX9XXX · 2 holders which blocks →	BRIGHTSPEED OF CENTRAL WISCONSIN, LLC	1159	MERRILLAN	WI
—	715-334	0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	BRIGHTSPEED OF CENTRAL WISCONSIN, LLC	1159	FAIRCHILD	WI
—	715-335	not yet reported which blocks →	UNION TEL. CO.	0962	PLAINFIELD	WI
—	715-336	1XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	BRIGHTSPEED OF WESTERN WISCONSIN, LLC	0841	GOODMAN	WI
—	715-339	none assigned yet which blocks →	PRICE COUNTY TEL. CO.	0937	PHILLIPS	WI
—	715-340	none assigned yet which blocks →	UNITED STATES CELLULAR - WI	6274	STEVENS PT	WI
—	715-341	not yet reported which blocks →	WISCONSIN BELL INC	9327	STEVENS PT	WI
—	715-342	not yet reported which blocks →	WISCONSIN BELL INC	9327	STEVENS PT	WI
—	715-343	not yet reported which blocks →	WISCONSIN BELL INC	9327	STEVENS PT	WI
—	715-344	not yet reported which blocks →	WISCONSIN BELL INC	9327	STEVENS PT	WI
—	715-345	not yet reported which blocks →	WISCONSIN BELL INC	9327	STEVENS PT	WI
—	715-346	not yet reported which blocks →	WISCONSIN BELL INC	9327	STEVENS PT	WI
—	715-347	9XXX which blocks →	UNITED STATES CELLULAR - WI	6274	STEVENS PT	WI
—	715-348	0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks →	FRONTIER NORTH INC. - WI	0886	WAUSAU	WI
—	715-349	not yet reported which blocks →	SIREN TEL. CO., INC.	0949	SIREN	WI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.