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DNS Lookup

Query all DNS record types for any domain

Reverse DNS

Find hostnames associated with an IP address

DNS Record Types

AIPv4 address that the domain points to
AAAAIPv6 address that the domain points to
MXMail exchange servers with priority (lower = preferred)
TXTText records used for SPF, DKIM, domain verification, etc.
NSAuthoritative nameservers for the domain
CNAMECanonical name alias pointing to another domain
SOAStart of Authority with zone administrative details
CAACertificate Authority Authorization for SSL/TLS issuance
PTRPointer record for reverse DNS (IP to hostname)