There are a few key resource record types: A, CNAME, MX, TXT, and SPF. When that happens, website operations become impossible.īut, you must first delegate the domain - that is, register its servers for it before specifying resource records. In effect, DNS’s reliance on resource records means that it can’t find domains with unregistered resource records. A server can communicate domain information with other servers via the use of resource records. Said simply, it is the internet’s phone book, but instead of using phone numbers and names, it uses IP addresses and domains.ĭomain information is maintained on DNS servers, and resource records are used to add this information to the system. By mapping domain names to numerical IP addresses, computers can then scan for services and devices. DNS does this by associating domain names with other forms of information. The Domain Name System (DNS) is a naming system used to identify computers and other resources accessible online. Apart from being useful for setting up new sites, proper DNS is also essential for updating records for existing sites, as well as for reviewing the settings of a mail server, such as an internal, company mailing network. A DNS checkup is useful for detecting and resolving issues with functionality and searchability when putting up a new website.
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