Domain name

Queries originate from the petuja.tools server and do not open an HTTP connection to the entered domain.

What this tool does

This tool queries current DNS data for a domain through the server resolver and presents the main findings in one report.

It combines MX and SOA records with address reverse lookups, name server resolution and a bounded delegation check.

How to use the tool

Type the host name you want to inspect without a protocol, path, email address or port.
Run the analysis to review the current records, resolver timings and delegation results.
Read warnings separately from errors because a domain can return useful partial data when one DNS step is unavailable.

Useful applications

Review the mail and authority records currently published for a domain.
Compare name server addresses and resolver response times while investigating DNS configuration.
Inspect reverse DNS names and the visible delegation path for a domain.

Notes and limitations

DNS answers can change because of provider changes, caching and resolver location. The report represents the response available to the petuja.tools server at the time of the check.
The delegation section uses bounded direct DNS queries when the server provides the required dig command. It may be unavailable while the resolver-based sections still work.

Frequently asked questions

Does this report prove that a domain is configured correctly?

No. It displays observable DNS responses and highlights some missing or inconsistent results, but the correct configuration depends on the domain's intended service and provider setup.

Why can the response time differ between name servers?

The measured time includes the resolver path used by the server and can vary with caching, network conditions and the name server's location.