The Domain Name Registry under the .do ccTLD is administered by the Network Information Center .do (NIC .DO) of the Pontificia Universidad Católica Madre y Maestra, a function delegated in 1995 by the Internet Assigned Numbers Authority (IANA), currently operated By ICANN.

In order to carry out these functions, the present policies have been established, which govern the delegation of domain names for .do and whose acceptance constitutes an essential requirement for the registration of a domain name under the .do ccTLD.