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DNS Records
DNS (Domain Name System) takes a human friendly domain names as input and translate that to an IP Address. There are various record types like A record, CNAME, MX, TXT, SRV, AAAA etc.,
2019-06-25
2022-10-01

DNS (Domain Name System) takes a human friendly domain names as input and translate that to an IP Address. There are various record types like A record, CNAME, MX, TXT, SRV, AAAA etc.,

Major DNS record types

Record Type Description
A Record Points to an IPv4 address
AAAA Similar to A but this allows to point to an IPv6 address
CNAME (Canonical Name) Points to another domain name
MX (Mail Exchanger) Directs email to a mail server
TXT Map domain to text, mostly for information. Often used for verification purpose
SRV Points to a domain name using a specific destination port

Other DNS record types

Record Type Description
CAA Provide additional confirmation for the Certification Authority when validating an SSL certificate
CERT Provides a space in the DNS for certificates and related certificate revocation lists
DNSKEY Contains a public signing key (usually for DNSSEC)
DS Refers to a DNSKEY resource record by including a digest of that DNSKEY resource record
LOC Expressing geographic location information for a domain name
NS Contains the name of the authoritative name server within a domain or DNS zone
PTR Verify that the sender matches the IP address it claims to be using
SPF Lists all the servers authorized to send emails from a particular domain
SSHFP Identifies SSH keys that are associated with a host name.
TLSA Associate a TLS server certificate or public key with the domain name where the record is found
URI Means for publishing mappings from hostnames to URIs