Network & webmaster tools

Diagnose your network
at a glance.

DNS, IP, SSL certificate, WHOIS, propagation… Everything you need to check a site or a domain, instantly and without signing up.

Instant analysis : DNS, WHOIS, SSL and headers

Quick access My IP DNS lookup Propagation WHOIS SSL certificate
100% free No sign-up Instant results
The tools

Everything you need to check a domain

My IP address

Your public IP, your provider, your approximate location.

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DNS lookup

A domain's A, AAAA, MX, TXT, NS and CNAME records.

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DNS propagation

Check whether your DNS is up to date around the world.

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WHOIS

A domain's owner, creation date and expiry date.

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SSL certificate

A site's HTTPS validity, issuer and expiry date.

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HTTP headers

A URL's server, redirects, caching and security headers.

Open
Why NetCheck

The webmaster's Swiss army knife

Instant

Results appear in a fraction of a second, with no waiting.

Reliable

Live data, pulled straight from DNS servers and from the sites themselves.

Free & unlimited

No sign-up, no quota. Check as often as you like.

Made for professionals

Migrations, troubleshooting, security: the information you need, in the right format.

Need a different check ?

New network tools are added regularly.

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