Recent prefix assignments

2 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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
2002-10-16	309-929	1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	ONVOY, LLC	224C	TREMONT	IL
2002-10-16	309-964	1XXX2XXX3XXX4XXX5XXX9XXX · 4 holders which blocks →	ONVOY, LLC	224C	GOODFIELD	IL
2002-09-23	309-840	8XXX9XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	SOUTHPEKIN	IL
2002-08-19	309-733	0XXX3XXX7XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	GROVELAND	IL
2002-08-19	309-893	0XXX1XXX2XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	SAYBROOK	IL
2002-08-19	309-938	5XXX6XXX7XXX8XXX9XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	MORTON	IL
2002-07-17	309-468	0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	LE ROY	IL
2002-06-14	309-807	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	BLOOMINGTN	IL
2002-06-10	309-750	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks →	T-MOBILE USA, INC.	6529	BLOOMINGTN	IL
2002-06-10	309-868	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks →	T-MOBILE USA, INC.	6529	PEORIA	IL
2002-05-14	309-644	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	ROCKISLAND	IL
2002-05-07	309-740	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	PEORIA	IL
2002-04-17	309-613	1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	T-MOBILE USA, INC.	6529	PEKIN	IL
2002-04-03	309-606	0XXX1XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	WYOMING	IL
2002-04-03	309-767	3XXX7XXX8XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	KEWANEE	IL
2002-03-19	309-714	3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	GENESEO	IL
2002-02-25	309-303	9XXX which blocks →	T-MOBILE USA, INC.	6529	PEORIA	IL
2002-02-14	309-641	1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	MORTON	IL
2002-02-14	309-717	1XXX2XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	SUNNYLAND	IL
2002-01-17	309-706	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	METROPCS, INC.	5562	BLOOMINGTN	IL
2001-12-14	309-230	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	ROCKISLAND	IL
2001-10-29	309-720	0XXX3XXX · 2 holders which blocks →	MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL	846F	SHERRARD	IL
2001-10-29	309-814	9XXX which blocks →	MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL	846F	GLASFORD	IL
2001-10-26	309-771	1XXX3XXX5XXX7XXX8XXX · 4 holders which blocks →	MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL	846F	HILLSDALE	IL
2001-10-26	309-843	1XXX3XXX7XXX8XXX9XXX · 4 holders which blocks →	MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL	846F	ALEXIS	IL
2001-10-26	309-845	1XXX which blocks →	MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL	846F	OSCO	IL
2001-10-16	309-712	0–9 XXXall 10 · 2 holders which blocks →	UNITED STATES CELLULAR - IL	6265	PEORIA	IL
2001-10-05	309-883	6XXX7XXX8XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	KEWANEE	IL
2001-08-29	309-912	7XXX8XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	EASTMOLINE	IL
2001-08-17	309-922	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	T-MOBILE USA, INC.	6529	PEORIA	IL
2001-05-21	309-761	1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	KEWANEE	IL
2001-05-21	309-770	7XXX which blocks →	FRONTIER NORTH, INC. - IL	1015	WYOMING	IL
2001-05-21	309-819	1XXX8XXX · 2 holders which blocks →	FRONTIER NORTH, INC. - IL	1015	SUNNYLAND	IL
2001-05-21	309-831	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	FRONTIER NORTH, INC. - IL	1015	BLOOMINGTN	IL
2001-05-21	309-834	none assigned yet which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	BLOOMINGTN	IL
2001-05-21	309-866	1XXX2XXX3XXX6XXX7XXX8XXX · 4 holders which blocks →	FRONTIER NORTH, INC. - IL	1015	MORTON	IL
2001-03-20	309-622	0–9 XXXall 10 · 4 holders which blocks →	FRONTIER NORTH, INC. - IL	1015	BLOOMINGTN	IL
2001-03-16	309-721	0XXX2XXX which blocks →	T-MOBILE USA, INC.	6529	ROCKISLAND	IL
2001-01-12	309-648	0XXX which blocks →	T-MOBILE USA, INC.	6529	PEORIA	IL
—	309-208	none assigned yet which blocks →	T-MOBILE USA, INC.	6529	PEORIA	IL
—	309-210	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	PEORIA	IL
—	309-211	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	IL
—	309-212	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	BLOOMINGTN	IL
—	309-213	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	PEORIA	IL
—	309-214	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	PEORIA	IL
—	309-215	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	PEORIA	IL
—	309-216	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	PEORIA	IL
—	309-218	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	PEORIA	IL
—	309-219	0–9 XXXall 10 · 3 holders which blocks →	UNITED STATES CELLULAR - IL	6265	PEORIA	IL
—	309-221	none assigned yet which blocks →	UNITED STATES CELLULAR - IL	6265	GALESBURG	IL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.