STD Code List
Delhi

All About STD Code

Subscriber Trunk Dialling (STD) codes are used for city, villages and town. STD code is basically used by the network operator to make the call outside the state or country. STD code has many synonyms like area code, telecom code and telephone code. Larger cities are assigned with short STD codes (usually of 2 digits) whereas 2 tier cities are having 3 digits code. Thus, STD code not only helps to make a call problem free but also helps to recognize the call route.