Question 1

What DNS records does DNS Compare check?

Accepted Answer

DNS Compare checks six record types for each domain: A records (IPv4 addresses), AAAA records (IPv6 addresses), MX records (mail servers), NS records (nameservers), SPF records (email sender authorization), and DMARC records (email authentication policy). All records are compared side by side so you can spot differences instantly.

Question 2

How does the comparison work?

Accepted Answer

Both domains are resolved in parallel for each record type. The tool then compares the values and marks each record type as matching (identical values) or different. This makes it easy to see where two domains have the same DNS configuration and where they diverge.

Question 3

Why would I compare DNS records of two domains?

Accepted Answer

Common use cases include verifying a domain migration by comparing old and new domains, auditing email security configuration across related domains, checking if a staging domain matches production DNS settings, and comparing your domain against a competitor or best-practice reference domain.

Question 4

Can I export the comparison results?

Accepted Answer

Yes, you can export the full DNS comparison results in JSON, CSV, or plain text format. Click the Export button above the results table to download the data in your preferred format for documentation or sharing with your team.

Question 5

Is DNS Compare free to use?

Accepted Answer

Yes, DNS Compare is completely free to use with no signup required. The tool is rate-limited to prevent abuse, but normal usage is unrestricted. You can compare as many domain pairs as you need.