DS: The Delegation Signer (DS) record provides the unique characters of your public key and its related metadata like Key Tag, Algorithm, Digest Type and cryptographic hash value called Digest.If no CAA record is defined, any Certification Authority can issue an SSL certificate for your domain. CAA: The Certification Authority Authorization (CAA) record defines the public policy regarding the issuance of digital certificates for the domain name.SOA: A Start of Authority (SOA) record provides an essential information about the domain.Some Internet protocols such as XMPP and SIP may require SRV records. SRV: A Service (SRV) record indicates which services are offered on port numbers.It allows a reverse DNS lookup, which is also known as rDNS record. PTR: A Pointer (PTR) record, points the IPv4 or IPv6 address of the host.The NS are DNS servers that are authoritative to handle the DNS query for the domain.
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