Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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
—	308-366	not yet reported which blocks →	CURTIS TEL. CO.	1536	CURTIS	NE
—	308-367	none assigned yet which blocks →	CURTIS TEL. CO.	1536	CURTIS	NE
—	308-368	not yet reported which blocks →	HERSHEY COOP. TEL. CO.	1561	HERSHEY	NE
—	308-370	not yet reported which blocks →	N.E. COLORADO CELLULAR, INC.	6874	GRAND IS	NE
—	308-372	not yet reported which blocks →	NEBRASKA CENTRAL TEL. CO.	1574	ROCKVILLE	NE
—	308-375	not yet reported which blocks →	HARTMAN TEL. EXCH., INC.	1557	LEBANON	NE
—	308-377	not yet reported which blocks →	DALTON TEL. CO.	1537	DALTON	NE
—	308-379	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE	5807	GRAND IS	NE
—	308-380	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE	5807	GRAND IS	NE
—	308-381	not yet reported which blocks →	QWEST CORPORATION	9631	GRAND IS	NE
—	308-382	not yet reported which blocks →	QWEST CORPORATION	9631	GRAND IS	NE
—	308-383	none assigned yet which blocks →	UNITED STATES CELLULAR - NE	6263	GRAND IS	NE
—	308-384	not yet reported which blocks →	QWEST CORPORATION	9631	GRAND IS	NE
—	308-385	8XXX which blocks →	QWEST CORPORATION	9631	GRAND IS	NE
—	308-386	none assigned yet which blocks →	GREAT PLAINS COMMUNICATIONS, INC.	1577	SUTHERLAND	NE
—	308-387	8XXX which blocks →	CONSOLIDATED TELCO, INC.	1530	WALLACE	NE
—	308-388	6XXX7XXX · 2 holders which blocks →	CITIZENS TELECOM OF NE LLC DBA FRONTIER COM OF NE	1128	PLEASANTON	NE
—	308-389	1XXX which blocks →	QWEST CORPORATION	9631	GRAND IS	NE
—	308-390	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE	5807	GRAND IS	NE
—	308-391	4XXX5XXX6XXX7XXX which blocks →	UNITED STATES CELLULAR - NE	6263	GRAND IS	NE
—	308-394	not yet reported which blocks →	WAUNETA TEL. CO.	1597	WAUNETA	NE
—	308-395	2XXX4XXX5XXX6XXX7XXX · 2 holders which blocks →	QWEST CORPORATION	9631	GRAND IS	NE
—	308-396	not yet reported which blocks →	GREAT PLAINS COMMUNICATIONS, INC.	1577	PRIMROSE	NE
—	308-397	not yet reported which blocks →	WAUNETA TEL. CO.	1597	WAUNETA	NE
—	308-398	not yet reported which blocks →	WINDSTREAM COMMUNICATIONS OF THE MIDEWEST INC - NE	7816	GRAND IS	NE
—	308-402	not yet reported which blocks →				NE
—	308-411	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	NE
—	308-420	not yet reported which blocks →	BENKELMAN TEL. CO., INC.	2455	BENKELMAN	NE
—	308-423	not yet reported which blocks →	BENKELMAN TEL. CO., INC.	2455	BENKELMAN	NE
—	308-425	not yet reported which blocks →	CITIZENS TELECOM OF NE LLC DBA FRONTIER COM OF NE	1128	FRANKLIN	NE
—	308-428	not yet reported which blocks →	CITIZENS TELECOM OF NE LLC DBA FRONTIER COM OF NE	1128	GREELEY	NE
—	308-430	none assigned yet which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE	5807	CHADRON	NE
—	308-432	1XXX which blocks →	QWEST CORPORATION	9631	CHADRON	NE
—	308-436	not yet reported which blocks →	UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE	4530	GERING	NE
—	308-440	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE	5807	KEARNEY	NE
—	308-445	not yet reported which blocks →	QWEST CORPORATION	9636	NO JULESBG	NE
—	308-446	not yet reported which blocks →	NEBRASKA CENTRAL TEL. CO.	1574	LITCHFIELD	NE
—	308-447	not yet reported which blocks →	GREAT PLAINS COMMUNICATIONS, INC.	1577	VENANGO	NE
—	308-452	not yet reported which blocks →	NEBRASKA CENTRAL TEL. CO.	1574	RAVENNA	NE
—	308-453	not yet reported which blocks →	GOLDEN WEST TEL COOP INC DBA GOLDEN WEST TELECOMM	1659	SO ARDMORE	NE
—	308-457	4XXX5XXX which blocks →	CITIZENS TELECOM OF NE LLC DBA FRONTIER COM OF NE	1128	MILLER	NE
—	308-458	none assigned yet which blocks →	CONSOLIDATED TEL. CO.	1532	HYANNIS	NE
—	308-464	not yet reported which blocks →	N.E. COLORADO CELLULAR, INC.	6874	OGALLALA	NE
—	308-467	not yet reported which blocks →	SODTOWN COMMUNICATIONS, INC.	1590	SODTOWN	NE
—	308-468	not yet reported which blocks →	NEBRASKA CENTRAL TEL. CO.	1574	GIBBON	NE
—	308-470	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE	5807	FRANKLIN	NE
—	308-471	not yet reported which blocks →				NE
—	308-472	not yet reported which blocks →	CITIZENS TELECOM OF NE LLC DBA FRONTIER COM OF NE	1128	BERTRAND	NE
—	308-473	not yet reported which blocks →	CITIZENS TELECOM OF NE LLC DBA FRONTIER COM OF NE	1128	ORLEANS	NE
—	308-478	not yet reported which blocks →	GREAT PLAINS COMMUNICATIONS, INC.	1577	WILCOX	NE

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.