The Country Code for India is ’91’. The City Code for Delhi is ’11’. Landline numbers in major cities like Delhi, Mumbai, Bangalore and Chennai have eight digits, whereas the numbers in smaller cities could have only 4-7 digits. All mobile numbers contain 10 digits and begin with “9” or “8”.
Area Codes in India are referred to as STD codes. STD codes for some cities are:
Delhi – 11
Mumbai – 22
Kolkata – 33
Chennai – 44
Hyderabad – 40
Bangalore – 80
In India, both GSM and CDMA (WLL) mobile systems are present. Please contact your mobile service provider in your country to check their roaming partners and tariffs in India. In case you plan on making many local calls in India from your mobile phone, the mobile service provider in your country may be able to provide you with an Indian SIM card. This is a much cheaper way of making local calls as compared with international roaming charges.
The international access code when dialling out of India is “00” (or “+” when dialling from a mobile phone).