The National Informatics Centre (NIC), ERNET, and the Ministry of Defence were appointed as registrars for the gov.in, res.in and ac.in, and the mil.in domains respectively.

Neustar added the ability to register Indian-language domains in native script by enabling end-to-end web portal language support.

Unlimited registrations under the previously structured existing zones are also allowed:[7] Zones reserved for use by qualified institutions in India:[7] 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.

The .in registry launched following sub-domains on Oct 29, 2021 to benefit the growing market:[10] Before the introduction of liberalised registration policies for the .in domain, only 7000 names had been registered between 1992 and 2004.

As of March 2010[update], the number had increased to over 610,000 domain names with 60% of registrations coming from India and the rest from overseas.