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Welcome to the International Mobile Subscriber Identity (IMSI) Oversight Council

The IOC is an open industry committee of telecommunications companies and other organizations with a direct interest in the management of IMSI codes. An IMSI is a 15-digit number used within mobile phones that allows service operators to identify mobile terminals, for purposes of international roaming. The IOC is responsible for overseeing the management of IMSI codes that have been assigned to the United States and its possessions as authorized by the U.S. Department of State since 1996.

 

 
--General Information-
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Chair:
Adam Newman,Telcordia
anewman@telcordia.com
732-699-6425

IOC Administrator:
Amanda Kimball, ATIS
akimball@atis.org
202-662-8654

IMSI-Administrator:
Connie Hartman
chartman@telcordia.com
732-699-4204

ATIS Manager:
Veronica Lancaster
vlancaster@atis.org
202-434-8826

 
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Scope

The IOC is responsible for the management and administration of International Mobile Subscriber Identities (IMSI) in the United States and maintains compliance with the "IMSI Assignment Guidelines and Procedures" to ensure that it meets the evolving needs of the U.S. wireless telecommunications industry.

Guidelines and Procedures

IMSI Guidelines Version 14.0, (clean)

IMSI Guidelines Version 14.0, (revmarked)

 
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