AskKaka lists the STD code of Bangalore that is 080. Bangalore is a part of Karnataka and the ISO code of Karnataka state is KA.
Bangalore STD code aka subscriber trunk dialing code is 080 which is mentioned above on this page of AskKaka. We are great resource of finding Bangalore std code of Karnataka (KA).
Useful Info :-
Please take a note that if you are in India and dialing a landline number of Bangalore then you will have to dial STD code 080 as a prefix followed by the phone number of a landline user and if you are calling Bangalore's phone number from a foreign country then you need to add +91 (the country code) followed by 80, e.g. +9180 (no need to add "0" as prefix) followed by the landline phone number.
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