Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 26

Rogers Communications Canada Inc. (Wireless) 23

NEW CINGULAR WIRELESS PCS, LLC - IL 22

ONVOY, LLC - CA 21

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
—	815-794	1XXX4XXX which blocks →	MARSEILLES TEL. CO. OF MARSEILLES	1050	MARSEILLES	IL
—	815-795	none assigned yet which blocks →	MARSEILLES TEL. CO. OF MARSEILLES	1050	MARSEILLES	IL
—	815-796	5XXX6XXX · 2 holders which blocks →	FRONTIER COMMUNICATIONS-PRAIRIE, INC.	1073	FLANAGAN	IL
—	815-798	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	MILLEDGEVL	IL
—	815-801	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	FREEPORT	IL
—	815-804	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	PECATONICA	IL
—	815-805	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	DURAND	IL
—	815-806	5XXX6XXX7XXX · 3 holders which blocks →	ILLINOIS BELL TEL CO	9329	FRANKFORT	IL
—	815-807	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	GERMAN VLY	IL
—	815-808	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	WINSLOW	IL
—	815-809	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	LENA	IL
—	815-810	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	PEARL CITY	IL
—	815-811	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	IL
—	815-812	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	DAKOTA	IL
—	815-813	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	APPLERIVER	IL
—	815-816	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	CEDARVILLE	IL
—	815-817	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	HANOVER	IL
—	815-818	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	WARREN	IL
—	815-819	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	ORANGEVL	IL
—	815-820	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	ELIZABETH	IL
—	815-823	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	JOLIET	IL
—	815-824	0XXX1XXX3XXX4XXX5XXX6XXX7XXX · 6 holders which blocks →	FRONTIER NORTH, INC. - IL	1036	SHABBONA	IL
—	815-825	0XXX1XXX3XXX4XXX5XXX8XXX · 6 holders which blocks →	FRONTIER NORTH, INC. - IL	1036	MALTA	IL
—	815-827	0XXX1XXX6XXX7XXX8XXX · 4 holders which blocks →	FRONTIER NORTH, INC. - IL	1036	MAPLE PARK	IL
—	815-829	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	CHADWICK	IL
—	815-830	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	OGLESBY	IL
—	815-831	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	DAVIS	IL
—	815-832	not yet reported which blocks →	FRONTIER COMMUNICATIONS OF ILLINOIS, INC.	1038	SAUNEMIN	IL
—	815-833	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	MCCONNELL	IL
—	815-834	3XXX7XXX · 2 holders which blocks →	ILLINOIS BELL TEL CO	9329	LOCKPORT	IL
—	815-835	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	DIXON	IL
—	815-836	1XXX4XXX6XXX9XXX which blocks →	ILLINOIS BELL TEL CO	9329	LOCKPORT	IL
—	815-837	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	FORRESTON	IL
—	815-838	not yet reported which blocks →	ILLINOIS BELL TEL CO	9329	LOCKPORT	IL
—	815-839	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL	7196	KANKAKEE	IL
—	815-840	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	STOCKTON	IL
—	815-841	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	MT MORRIS	IL
—	815-842	7XXX which blocks →	FRONTIER NORTH, INC. - IL	1015	PONTIAC	IL
—	815-843	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	ASHTON	IL
—	815-844	0XXX8XXX9XXX · 2 holders which blocks →	FRONTIER NORTH, INC. - IL	1015	PONTIAC	IL
—	815-845	0XXX1XXX3XXX4XXX7XXX8XXX · 5 holders which blocks →	FRONTIER NORTH, INC. - IL	1036	SCALESMOND	IL
—	815-846	not yet reported which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	JOLIET	IL
—	815-848	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	PONTIAC	IL
—	815-849	0XXX1XXX2XXX3XXX4XXX6XXX8XXX · 5 holders which blocks →	FRONTIER NORTH, INC. - IL	1036	SUBLETTE	IL
—	815-850	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	SEWARD	IL
—	815-851	not yet reported which blocks →	SPOK, INC.	6630	KANKAKEE	IL
—	815-852	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	SCALESMOND	IL
—	815-853	1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	FRONTIER NORTH, INC. - IL	1015	WENONA	IL
—	815-854	1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	FRONTIER NORTH, INC. - IL	1015	LONG POINT	IL
—	815-856	not yet reported which blocks →	LEONORE MUTUAL TEL. CO.	1046	LEONORE	IL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.