.in is the Internet country code top-level domain (ccTLD) for India. The domain is operated by INRegistry under the authority of NIXI, the National Internet Exchange of India. INRegistry was appointed by the government of India.

As of 2005^[update], liberalised policies for the .in domain allow unlimited second-level registrations under .in. Unlimited registrations under the previously structured existing zones are also allowed:

Six zones are reserved for use by qualified organizations in India:

Before the more liberal policies for the .in domain, only 7000 names had been registered between 1992 and 2004. As of March 2010, the number had increased to over 6.1 lakh, with 60% of registrations coming from India, rest from overseas. This domain is popular for domain hacks.

The domain .nic.in is reserved for India's National Informatics Centre, but in practice most Indian government agencies have domains ending in .nic.in.

India plans to introduce internationalized domain names, that is domain names in 22 local languages used in India. They are planned to be introduced in mid-2012.