MSIN (Mobile Subscription Identification Number)

MSIN stands for Mobile Subscription Identification Number. It is a unique number, consisting of maximum 10 digits, used to differentiate a mobile phone by a mobile network operator (MNO).

The Mobile Subscription Identification Number (sometime also referred to as the Mobile Subscriber Identification Number) is part of the International Mobile Subscriber Identity (IMSI) number – the last 10 digits of the 15 digit long IMSI number are the MSIN.