Dns updating service
TXT that mapped host names to the numerical addresses of computers on the ARPANET.Maintenance of numerical addresses, called the Assigned Numbers List, was handled by Jon Postel at the University of Southern California's Information Sciences Institute (ISI), whose team worked closely with SRI. To request a hostname and an address and add a computer to the master file, users contacted the SRI's Network Information Center (NIC), directed by Elizabeth Feinler, by telephone during business hours.The domain name itself consists of the label, possibly concatenated with the name of its parent node on the right, separated by a dot.The tree sub-divides into zones beginning at the root zone.The Internet maintains two principal namespaces, the domain name hierarchy The Domain Name System maintains the domain name hierarchy and provides translation services between it and the address spaces.Internet name servers and a communication protocol implement the Domain Name System.For example, the domain name to the addresses 188.8.131.52 (IPv4) and 260:6d:26bf:1497:aa7 (IPv6).Unlike a phone book, DNS can be quickly updated, allowing a service's location on the network to change without affecting the end users, who continue to use the same hostname.
By providing a worldwide, distributed directory service, the Domain Name System is an essential component of the functionality on the Internet, that has been in use since 1985.Mockapetris instead created the Domain Name System.In 1984, four UC Berkeley students, Douglas Terry, Mark Painter, David Riggle, and Songnian Zhou, wrote the first Unix name server implementation for the Berkeley Internet Name Domain, commonly referred to as BIND.It defines the DNS protocol, a detailed specification of the data structures and data communication exchanges used in the DNS, as part of the Internet Protocol Suite.
Historically, other directory services preceding DNS were not scalable to large or global directories as they were originally based on text files, prominently the hosts file.
When a user accesses a distributed Internet service using a URL, the domain name of the URL is translated to the IP address of a server that is proximal to the user.