What is the ICCID number and why is it relevant to cellular IoT?


What is the ICCID number?

The barcode on the back of the SIM card may not seem that special to us, but it actually has a deeper meaning, and the number is called: ICCID. ICCID number stands for Integrated Circuit Card ID, i.e. Integrated Circuit Card ID, usually 19 or 20 digits, these numbers are unique and will not be duplicated.

  • The first two digits of the ICCID of the SIM card are 89, which means that it comes from the telecommunications industry, as the ICCID number is also used for other integrated circuit cards, such as ID cards, credit cards, etc.
  • Then comes the country code, which is either 2 or 3 digits long, regardless of the region. The country code is determined by the International Telephone Union (ITU) and is different from the Mobile Country Code (MCC) used in IMSI.
  • The next number is the telecommunications network code (MNC), which is the identifier of the telecommunications network that issued the SIM card, usually 1-4 digits
  • After the MNC, the ICCID numbers of SIM cards are unique numbers to identify the uniqueness of each card

Why is ICCID relevant to cellular IoT?

The ICCID is an integral part of the communication between IoT devices and cellular network providers. The ICCID of your SIM card determines which cellular networks your device can access, your local network operator will need to be able to recognize them. Therefore, this identifier is essential for cellular network connectivity.

How do I find my ICCID number?

Usually, the ICCID number can be found printed on the back of the SIM card or on the packaging. Depending on the type of device, you can also find the ICCID of the SIM in the user interface. for example, on cell phones, it is usually listed in the settings.


Apparently, the ICCID plays a crucial role in the genetic makeup of the SIM. Ready to start your IoT community? Let's get a SIM card.