Domain Name System (DNS) records are the foundation of the Domain Name System (DNS). DNS is a hierarchical system that translates human-readable names, such as blog.example.
com, into IP addresses. A DNS record is a set of data that is stored in a DNS server and associates a domain name with an IP address or other hostname. A DNS record contains the following information:.
– A domain name
– A IP address or hostname
– A type of record (A, CNAME, MX, NS, or SOA)
– The TTL (time to live)
– The serial number
– The name server that is responsible for the record
A domain name is a human-readable name that is used to identify a specific host on the Internet. A domain name is usually composed of two parts: the top-level domain (TLD) and the hostname. For example, the domain name blog.com is a domain name that is registered with the top-level domain .
com. The hostname blog.com is the name that is displayed to the user when they visit the website.
A DNS record is a set of data that is stored in a DNS server and associates a domain name with an IP address or other hostname. A DNS record contains the following information:
– A domain name
– An IP address or hostname
– A type of record (A, CNAME, MX, NS, or SOA)
– The TTL (time to live)
– The serial number
– The name server that is responsible for the record
There are several types of DNS records:
A record is an entry in the DNS database that contains the name and address of a host.
CNAME record is an alias for an entry in the DNS database. CNAME records are used when a domain name is mapped to more than one hostname.
For example, the domain name blog.com can have the following three CNAME records:.
example.com. A record that specifies the IP address of the primary hostname for blog. This record points to the A record for blog.com in the DNS database.
blog. B record that specifies the name of the secondary hostname that is used when resolving blog. CNAME record that specifies the alias for the blog.
com domain name. This record points to the CNAME record for blog.
When a user visits the website blog.com, the browser looks for the CNAME record for blog. If the record isn’t found, the browser looks for the A record for blog.
NS record is an entry in the DNS database that specifies the name server for a domain.
SOA record is an entry in the DNS database that specifies the type of service for a domain.
The following table lists the most common DNS records:
DNS Record Description A Record The IP address of the host. CNAME Record An alias for the host. MX Record The mail exchange record for the host. NS Record The name server for the host.
SOA Record The start of authority for the host. TTL Record The time to live for the host.
