MCC Mobile Country Code codes of countries in the world

Each country (territory) in the world has a unique code that identifies it for mobile services. This makes it possible to clearly identify the country in which the mobile network operates or the country of origin of the SIM card. In order for a mobile network to work in a given country, it must be assigned a unique MCC code (Mobile Country Code), which is further developed by the code defining the network in that country – it is an MNC code (Mobile Network Code), which consists of 2 or 3 digits.
The uniqueness of MCC codes for countries is supervised by the International Telecommunication Union (ITU). This code always consists of 3 digits. For an American MCC code it is: 260.
See also:
The first digit in the 3-digit MCC code gives information about the geographical location of the country:
2 : Europe
: Europe 3 : North America and the Caribbean
: North America and the Caribbean 4 : Asia, India, Middle East, Middle East
: Asia, India, Middle East 5 : Australia and Oceania
: Australia and Oceania 6 : Africa
: Africa 7 : South America
: South America 9 : World
Thanks to MCC codes, our phone can easily identify whether the telecommunications service (telephone calls, SMS, MMS, data transmission) is provided within its own country or abroad and it is already international roaming. This in turn enables the operator providing you with a telecommunications service to properly settle you (according to domestic rates, according to roaming rates in the European Union or according to roaming rates outside the European Union if you are located and use your phone in a country outside the EU) and at the same time to settle accounts with other foreign operators.
The MCC code can also be used to block the possibility of using a mobile network outside your home country in the event that the subscriber does not want to use the international roaming service and connect only via mobile networks and their transmitters in their home country.
The MCC code is also part of a unique number identifying each SIM card that has been issued to a subscriber, i.e. each of us who uses a mobile phone, regardless of whether it is a subscription service, MIX or pre-paid. It takes the first three digits out of fifteen digits of the International Mobile Subscriber Identity (IMSI) code that uniquely identifies a given SIM card.
MCC country codes together with MNC mobile network codes form an international plan for identifying mobile public networks (according to ITU-T recommendation E.212 (09/2016)).
See below:
The whole (MCC code + MNC code) unambiguously identifies a given GSM service provider in international telecommunications structures, because a unique code of 5 or 6 digits is created (3-digit country code (MCC) and 2-3 digits code of the provider – mobile network in a given country).
Where does the name of the network appear on the display of the phone? The names of suppliers in connection with the codes of countries and operators are stored in GSM devices (phones) and SIM cards, but are also sent to phones directly through the network. Because network and code information may have been added to phones and SIM cards at different times, it is often the case that network names may be different and not always updated if, for example, a network changed its name (e.g. Era and later T-Mobile).
The country and mobile network code is also used in the phone menu to select the preferred or selected network. You will then see the name of the network, not its code consisting of the country code and the network code.
See companies and organisations using MCC 901 code