INRegistry is the official .IN registry. It was appointed by the government of India, and is operated under the authority of NIXI, the National Internet eXchange of India.
Most countries have their own Top Level Domain. The INRegistry has been created by NIXI, the National Internet Exchange of India. NIXI is a Not-for-Profit Company under Section 25 of the Indian Companies Act, 1956, with the objective of facilitating improved Internet services in the country.
Under NIXI, the INRegistry functions as an autonomous body with primary responsibility for maintaining the .IN ccTLD and ensuring its operational stability, reliability, and security. It will implement the various elements of the new policy set out by the Government of India and its Ministry of Communications and Information Technology, Department of Information Technology.
The Government decided to revamp the administration of the .IN registry in late 2004. INRegistry has assumed responsibility for the registry from the previous registry authority, The National Centre for Software Technology (NCST) and its Centre for Development of Advanced Computing (C-DAC). This change was announced via an executive order through a gazette notification issued by the Department of Information Technology (DIT), Government of India, according a legal status to the INRegistry. This announcement also mentioned the role of the National Informatics Centre (NIC) as the registrar for gov.in domains, ERNET as the registrar for res.in and ac.in domains, and the Ministry of Defence as the registrar for mil.in domains.
INRegistry does not carry out registrations itself. Instead, it accredits registrars through an open process of selection on the basis of transparent eligibility criteria.
The registry has formulated new policies for the registration and administration of .IN domain names. The goal is to make .IN domain names easier to use, and a way of making the Internet available to more Indian citizens. These policies generally took effect January 1, 2005.
Accredited registrars are free to set whatever retail prices they wish.
Available names 
Unlimited registrations are available in the following zones. Registration is available freely to all parties worldwide, and there are no nexus or other qualifications:
The following zones are reserved for use by qualified organizations in India.
- edu.in (Indian educational institutes)
- ac.in (Indian academic institutes)
- res.in (Indian research institutes)
- gov.in (Indian government)
- nic.in (National Informatics Centre)
- mil.in (Indian military)
See also 
- UDRP - Uniform Domain Name Resolution Policy suggested by ICANN
- InterNIC - The United States counterpart.
- National Internet Exchange of India