Telephone numbers in India are administered under the National Numbering Plan of 2003 by the Department of Telecommunications of the Government of India. The numbering plan was last updated in 2015. The country code "91" was assigned to India by the International Telecommunication Union in the 1960s.
Subscriber trunk dialling (STD) codes are assigned to each city, town and village. These codes can be between 2 and 8 digits long, with the largest metropolitan areas and cities having the shorte...