DNS tools
Look up DNS records and check how a domain is configured.
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DNS Lookup
Look up the DNS records published for a domain, one type or all common types at once, or the reverse DNS name of an IP address.
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MX Lookup
See which mail servers receive email for a domain, in priority order, with each server's addresses.
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CAA Checker
See which certificate authorities a domain allows to issue its certificates.
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DNSSEC Checker
Check whether a domain is signed with DNSSEC and whether validating resolvers accept it.