Input city name or STD code. You can also brows STD code by state from the list.
STD Code: 135
If calling a phone number in Dehradun from within india, you can dial std code and then the telephone number with prefix as zero (0) or country code (+91).
For example if you are dialing telephone number 1234567 in Dehradun then you should dial 01351234567 or +91 135 1234567.
If dialling from outside India, dial India country code +91 and then std code of Dehradun and then telephone number.
For example you are dialing telephone number 1234567 in Dehradun then you should dial +91 135 1234567.