MCC
Mobile country code: the three digits in an IMSI and a PLMN identity that name the country of a network.
Definitions only — a term explained here is not a service we sell.
A mobile country code (MCC) is the three-digit prefix that names the country or geographic area of a network. It is the first three digits of an IMSI and a PLMN identity; the ITU assigns it under E.212.
Where the MCC sits
- MCC 274
- MNC 01
- MSIN 1234567890
Text description
The fields run left to right: MCC, then MNC, then MSIN. The MCC names the country or area. The MNC that follows names the network.
A country, not an operator
A roaming handset keeps the MCC of its home country, so the code does not give the handset's location. Routing, fraud checks, coverage mapping and multi-IMSI selection all use the MCC. A spike from one MCC is a signal to check, not proof of fraud. Do not split an IMSI by fixed positions; use a source that records the MNC length per network. The MCC-MNC lookup confirms an assignment.