ICCID stands for Integrated Circuit Card Identifier, and it is used to identify each SIM card.
This code consists of 19 to 20 characters, and each part of the number provides us with the following information:
Example: ICCID 8910370000001595907
89: This is an industry code; in this case, 89 indicates a product for telecommunications networks.
103: These usually match the country code.
70: It is the area code of the mobile operator in a specific country.
000001595907: This number corresponds to the SIM card number.