Telenor Montenegro (commonly known as One) is a mobile network operator in Montenegro assigned PLMN code 297-01 by the national telecommunications authority.

The MCC 297 identifies Montenegro, while MNC 01 uniquely identifies this operator within the country. Together they form the PLMN (Public Land Mobile Network) identifier used by mobile devices for network selection, SIM card identification, and international roaming.

This assignment was last reported in ITU Operational Bulletin #1280 (Nov. 15, 2023). Search all MCC/MNC codes or view all Montenegro operators .