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In addition, different answers may be provided to DNS clients based on the clients' geographic location, as determined by their IP address . The most practical way to manage such critical Internet infrastructure has been to rely on databases and complex DNS management software to ensure homogeneity and avoid single points of deployment errors.
A Canonical Name (CNAME) record is a type of resource record in the Domain Name System (DNS) that maps one domain name (an alias) to another (the canonical name). [1]This can prove convenient when running multiple services (like an FTP server and a web server, each running on different ports) from a single IP address.
A reverse DNS lookup is a query of the DNS for domain names when the IP address is known. Multiple domain names may be associated with an IP address. The DNS stores IP addresses in the form of domain names as specially formatted names in pointer (PTR) records within the infrastructure top-level domain arpa. For IPv4, the domain is in-addr.arpa.
Multicast DNS (mDNS) is a computer networking protocol that resolves hostnames to IP addresses within small networks that do not include a local name server.It is a zero-configuration service, using essentially the same programming interfaces, packet formats and operating semantics as unicast Domain Name System (DNS).
For example, to do a reverse lookup of the IP address 8.8.4.4 the PTR record for the domain name 4.4.8.8.in-addr.arpa would be looked up, and found to point to dns.google. If the A record for dns.google in turn pointed back to 8.8.4.4 then it would be said to be forward-confirmed.
The domain name system acts like a large telephone directory and within is the master database, which associates a domain name such with the appropriate IP number. When the domain name is registered/purchased on a particular registrar's "name server", the DNS settings are kept on their server, and in most cases point the domain to the name ...
Virtual hosting is a method for hosting multiple domain names (with separate handling of each name) on a single server (or pool of servers). [1] This allows one server to share its resources, such as memory and processor cycles, without requiring all services provided to use the same host name.
On January 24, 2007, GoDaddy deactivated the domain of computer security site Seclists.org, taking 250,000 pages of security content offline. [90] The shutdown resulted from a complaint from MySpace to GoDaddy regarding 56,000 user names and passwords posted a week earlier to the full-disclosure mailing list and archived on the Seclists.org ...