KMMR Online Tools

DNS Lookup & Propagation Checker

Query A/AAAA/CNAME/MX/TXT/CAA records across Google, Cloudflare, Quad9, and OpenDNS to compare propagation and answer differences.

Built for propagation checks and DNS troubleshooting

Use it after nameserver changes or SPF, DMARC, and DKIM TXT updates to compare what public resolvers are returning.

Mail DNS Authentication Checker

Same resolver/hostname is throttled for a few seconds to avoid abuse.
Record types

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