MNC
Mobile network code: the two- or three-digit code after the MCC that names one operator network in a country.
Definitions only — a term explained here is not a service we sell.
A mobile network code (MNC) is the part of a PLMN identity that names one network within a country. It follows the three-digit MCC and is two or three digits long.
MNC inside the identity
- 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 names one network inside it.
Why the length matters
A parser that assumes two digits misreads a three-digit MNC, producing the wrong operator and the wrong IMSI. The error is silent and reaches routing and reporting. Use a data source that records the MNC length and its history. Confirm the full PLMN and the IMSI range with the network or a current registry, not a static prefix table. For multi-IMSI and roaming designs, check the visited network's MNC, not only the country. The MCC-MNC lookup lists current assignments.