🔄 DNS Record Comparison
Compare DNS records between two domains side-by-side
📚 About DNS Comparison
Comparing DNS records between two domains helps identify configuration differences, understand hosting setups, and troubleshoot issues during domain migrations. Enter two domains above and this tool queries each one's A, AAAA, MX, NS, TXT, CNAME and other records, then lays them side-by-side and highlights exactly what differs.
Common Use Cases
- Domain Migration: Verify new domain matches old configuration
- Troubleshooting: Compare working and broken domains
- Competitive Analysis: See how competitors configure their DNS
- Multi-domain Management: Ensure consistency across domains
This tool compares the records of two different domains. If instead you want to see whether one domain returns the same answer from different DNS servers around the world (a propagation or resolver-consistency check), use the DNS propagation checker.
Frequently Asked Questions
What does this DNS compare tool do?
It looks up the DNS records for two domains and shows them side-by-side, flagging which record types are identical, which differ, and which values are unique to one domain — with an overall similarity score.
How do I compare DNS records between two domains?
Enter both domains in the fields above and run the comparison. The tool queries each record type (A, AAAA, MX, NS, TXT, CNAME, and more) for both and highlights the differences automatically.
Can I compare DNS servers or resolvers?
This tool compares two domains' records. To compare how different DNS servers or resolvers answer for a single domain — useful after a change or during propagation — use the DNS propagation checker, which queries many global resolvers.
Why are two domains' DNS records different?
Different hosting providers, mail services, CDNs, or verification records will all show up as differences. During a migration, differences are expected until the new domain is fully configured to match the old one.