Mains supply in Armenia: 230 V, 50 Hz, sockets of Types C and F. At 230 V the supply matches what UK and European appliances expect, so no converter is needed.
You will find identical sockets in Indonesia, Türkiye, Georgia and Mongolia. Travelling further to Singapore, Qatar and the United Arab Emirates means a different adapter. 17 of the 50 destinations in Asia share the plug types of Armenia.
Protective earth
Grounded and ungrounded sockets may occur
Mixed supply: Type C without earth, Type F with earth. Which one is in your room only shows on arrival.