DNS Propagation Checker
Compare your DNS across multiple resolvers worldwide to spot propagation gaps. Everything runs locally in your browser, nothing is uploaded.
About this tool
Check your records against several public resolvers at once and see where changes have and have not landed.
Why free, and what happens next
Tools like this one are how this desk stays findable: useful first, commercial when you are ready. When a tool surfaces a problem you would rather have fixed than diagnosed, start a project or run the cost calculator first. Everything runs client-side: your data never leaves this page.
More email & dns tools
DNS Lookup
Live DNS lookups: A, AAAA, CNAME, MX, TXT, NS, PTR, SOA, CAA.
SPF Checker
Live SPF record check: syntax, lookups, and what it authorizes.
SPF Record Generator
Build a valid SPF TXT record from your sending services.
DKIM Record Checker
Look up your DKIM records live by selector and domain.
DKIM Record Generator
Generate the DKIM TXT record template for your selector and key.
DMARC Record Checker
Live DMARC record check: policy, alignment, reporting addresses.