Recent prefix assignments

2 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 309

ONVOY, LLC 1

AHOI LLC 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
—	309-284	9XXX which blocks →	FRONTIER NORTH, INC. - IL	1015	MORTON	IL
—	309-285	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	PEORIA	IL
—	309-286	0XXX1XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks →	FRONTIER NORTH, INC. - IL	1015	TOULON	IL
—	309-287	none assigned yet which blocks →	METROPCS, INC.	5562	BLOOMINGTN	IL
—	309-288	0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	FRONTIER NORTH, INC. - IL	1015	MINERAL	IL
—	309-289	1XXX which blocks →	BRIGHTSPEED OF ILLINOIS, LLC	1057	KNOXVILLE	IL
—	309-292	not yet reported which blocks →	T-MOBILE USA, INC.	6529	ROCKISLAND	IL
—	309-293	not yet reported which blocks →	MID CENTURY TEL. COOP., INC.	1054	ELLISVILLE	IL
—	309-294	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	PEORIA	IL
—	309-295	0XXX2XXX5XXX6XXX · 2 holders which blocks →	FRONTIER NORTH, INC. - IL	1015	MACOMB	IL
—	309-296	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	PEORIA	IL
—	309-297	1XXX2XXX4XXX9XXX · 4 holders which blocks →	SKYE TELECOM LLC DBA SKYETEL	622J	GALESBURG	IL
—	309-298	not yet reported which blocks →	FRONTIER NORTH, INC. - IL	1015	MACOMB	IL
—	309-299	2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks →	T-MOBILE USA, INC.	6529	GALESBURG	IL
—	309-305	0–9 XXXall 10 · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	MINIERAGTN	IL
—	309-310	0XXX which blocks →	METROPCS, INC.	5562	BLOOMINGTN	IL
—	309-311	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	IL
—	309-312	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC	224C	KEWANEE	IL
—	309-313	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL	7196	MACOMB	IL
—	309-314	9XXX which blocks →	T-MOBILE USA, INC.	6529	MOLINE	IL
—	309-320	0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	TELNYX LLC	073H	CAMERON	IL
—	309-325	not yet reported which blocks →	MCDONOUGH TEL. COOP.	1047	SMITHSHIRE	IL
—	309-329	0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	FRONTIER NORTH, INC. - IL	1015	ASTORIA	IL
—	309-331	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks →	UNITED STATES CELLULAR - IL	6265	MACOMB	IL
—	309-333	none assigned yet which blocks →	UNITED STATES CELLULAR - IL	6265	MACOMB	IL
—	309-334	not yet reported which blocks →	WOODHULL COMMUNITY TEL. CO.	1091	WOODHULL	IL
—	309-335	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	GALESBURG	IL
—	309-337	none assigned yet which blocks →	UNITED STATES CELLULAR - IL	6265	GALESBURG	IL
—	309-338	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	CANTON	IL
—	309-339	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	PEORIA	IL
—	309-341	not yet reported which blocks →	BRIGHTSPEED OF ILLINOIS, LLC	1057	GALESBURG	IL
—	309-342	not yet reported which blocks →	BRIGHTSPEED OF ILLINOIS, LLC	1057	GALESBURG	IL
—	309-343	not yet reported which blocks →	BRIGHTSPEED OF ILLINOIS, LLC	1057	GALESBURG	IL
—	309-344	not yet reported which blocks →	BRIGHTSPEED OF ILLINOIS, LLC	1057	GALESBURG	IL
—	309-345	not yet reported which blocks →	BRIGHTSPEED OF ILLINOIS, LLC	1057	GALESBURG	IL
—	309-346	not yet reported which blocks →	BRIGHTSPEED OF ILLINOIS, LLC	1057	PEKIN	IL
—	309-347	not yet reported which blocks →	BRIGHTSPEED OF ILLINOIS, LLC	1057	PEKIN	IL
—	309-348	not yet reported which blocks →	BRIGHTSPEED OF ILLINOIS, LLC	1057	SOUTHPEKIN	IL
—	309-351	3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	GALESBURG	IL
—	309-352	not yet reported which blocks →	BRIGHTSPEED OF ILLINOIS, LLC	1057	GREEN VLY	IL
—	309-353	not yet reported which blocks →	BRIGHTSPEED OF ILLINOIS, LLC	1057	PEKIN	IL
—	309-357	3XXX4XXX5XXX8XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	CANTON	IL
—	309-358	not yet reported which blocks →	MID CENTURY TEL. COOP., INC.	1054	YATES CITY	IL
—	309-359	0XXX1XXX2XXX7XXX · 3 holders which blocks →	FRONTIER NORTH, INC. - IL	1015	MACKINAW	IL
—	309-360	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	PEORIA	IL
—	309-361	6XXX8XXX9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PEORIA	IL
—	309-362	0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	ILLINOIS BELL TEL CO	9329	TRIVOLI	IL
—	309-363	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PEORIA	IL
—	309-364	0XXX6XXX7XXX8XXX · 3 holders which blocks →	FRONTIER NORTH, INC. - IL	1015	HENRY	IL
—	309-365	1XXX4XXX6XXX · 3 holders which blocks →	FRONTIER NORTH, INC. - IL	1015	LEXINGTON	IL

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.