Telephone numbers in India Telephone numbers in India Telephone numbers in India are administered under the "National Numbering Plan of 2003" by the Department of Telecommunications. The numbering plan was last updated in 2015. The International Telecommunication Union has assigned the country calling code "91" to India. Subscriber Trunk Dialling (STD) codes are assigned to each city/town/village, with the larger Metro cities having shorter area codes (STD codes), which are from 2 to 8 digits long. For example, Tier-2 Cities or culturally significant towns in India have STD code with 3 digits. For example, Kanpur and Lucknow were the two cities between which the
UK telephone code misconceptions traditional area codes (being non-Director areas), and as a result, many misquoted their numbers in the 011xx xxxxxx format, rather than in the correct 011x xxx xxxx format. In Reading, the confusion was furthered by the fact that dual running of the original 01734 and new 0118 codes was possible during the migration period, so it was possible to continue dialling the number locally in the six-digit format until 1998, when seven-digit numbers became mandatory. Because of this, many mistook the added 9 as being part of the new area code, rather than the subscriber number. Following the migration, new