International Mobile Subscriber Identity (IMSI)

An IMSI is used in any mobile network that interconnects with other networks. This unique, 15-digit international identifier, which is included in a mobile device, allows for roaming on mobile service provider networks. An IMSI includes three components: Three-digit Mobile Country Code (MCC), three-digit Mobile Network Code (MNC) and nine-digit Mobile Station Identification Number (MSIN).

assignments

The Home Network Identity (HNI)

Citizens Broadband Radio Service (CBRS)

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requests and changes

To apply, deploy, modify or return a code, fill out the appropriate form. Visit the HNI or CBRS form page for more information.

More information can be found in the IMSI Assignment Guidelines and Procedures on the atis.org website, which are maintained by the ATIS - IMSI Oversight Council (IOC).

 

oversight

The IMSI Oversight Council (IOC) is a committee of the Alliance for Telecommunications Industry Solutions (ATIS) that oversees the performance of the IMSI administration. Revisions to the guidelines are effective upon approval by the IOC. iconectiv is the United States IMSI Administrator, which administers the HNI and IBN on behalf of the Department of State. The Mobile Station Identification Number (MSIN) is administered by the network operator to which the HNI is assigned.

More information can be found in the IMSI Assignment Guidelines and Procedures on the atis.org website, which are maintained by the ATIS - IMSI Oversight Council (IOC).