Telephone numbers in India operator as well as the service and the company. Telemarketers have been issued 10-digit telephone numbers starting with 140 (140XXXXXXX) by the Department of Telecommunications on TRAI's request. 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.
UK telephone code misconceptions way to call a London landline number from a landline within the London telephone area is to dial the last 8 digits, the trunk prefix "0" and area dialling code "20", if included, are ignored. Other area codes with similarly widespread misconceptions about the correct area code include Bristol, Cardiff, Coventry, Leeds, Leicester, Northern Ireland, Nottingham, Portsmouth, Reading, Sheffield and Southampton. Owing to the marked increase in demand for telephone numbers to be available for allocation since the 1990s, the United Kingdom's telephone numbering system has been restructured several times on both a national and regional level, resulting in several