Mobile connectivity depends on more than signal strength and data plans. Behind every mobile connection, telecom systems use identifiers to recognize networks and manage access.
MCC and MNC codes help identify mobile networks across countries. When combined, they form a PLMN identifier, which represents a Public Land Mobile Network.
These codes are useful for telecom researchers, software developers, mobile operators, and eSIM users. They also help people organize operator information and investigate network details.
eSIMGlobo provides a directory for exploring mobile network operators and telecom identifiers worldwide. It helps users research network information and better understand the mobile connectivity landscape.
This guide explains the purpose of these codes, how they relate to one another, and how to research them accurately.
Mobile devices need a way to recognize available networks. Telecom systems also need consistent identifiers to distinguish networks from one another.
MCC and MNC provide two key parts of this identification process. The MCC identifies the country-related component, while the MNC distinguishes a network within the relevant MCC framework.
Together, they commonly form a PLMN identifier. Other identifiers, such as the IMSI, serve different purposes within mobile systems.
Understanding these relationships helps users read telecom records without mixing up network identifiers and subscriber information.
The following table summarizes the main differences between these commonly used terms.
| Code or Term | Full Form | Typical Structure | Primary Purpose | Common Research Use |
|---|---|---|---|---|
| MCC | Mobile Country Code | Three digits | Identifies the country or geographical numbering area associated with a mobile network | Grouping network records by country |
| MNC | Mobile Network Code | Two or three digits, depending on the numbering plan | Distinguishes a mobile network within the relevant MCC framework | Finding or validating a network record |
| PLMN | Public Land Mobile Network | Commonly represented by MCC plus MNC | Represents a public mobile network | Identifying a network in telecom systems |
| IMSI | International Mobile Subscriber Identity | Typically up to 15 digits | Identifies a mobile subscription | Understanding subscription identity in network systems |
| MSISDN | Mobile Station International Subscriber Directory Number | Telephone-number format | Represents a public telephone number associated with a subscription, where applicable | Understanding subscriber phone-number information |
Although these identifiers relate to mobile connectivity, they are not interchangeable. A PLMN identifies a network, while an IMSI identifies a subscription.
The Mobile Country Code is a three-digit identifier used in mobile network identification.
Telecom systems use the MCC as part of a broader identifier. It helps distinguish the country or geographical numbering area associated with a mobile network.