AskKaka lists the STD code of Gurgaon that is 0124. Gurgaon is a part of Haryana and the ISO code of Haryana state is HR.
Gurgaon STD code aka subscriber trunk dialing code is 0124 which is mentioned above on this page of AskKaka. We are great resource of finding Gurgaon std code of Haryana (HR).
Useful Info :-
Please take a note that if you are in India and dialing a landline number of Gurgaon then you will have to dial STD code 0124 as a prefix followed by the phone number of a landline user and if you are calling Gurgaon's phone number from a foreign country then you need to add +91 (the country code) followed by 124, e.g. +91124 (no need to add "0" as prefix) followed by the landline phone number.
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