NerdTools Fast, free online tools for sysadmins, developers, and nerds.

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Scan any domain or IP in seconds.

Run WHOIS, DNS, SSL, security headers, blacklist checks, and more from a single interface. No registration required.

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Scan leaderboard

Most searched domains and IPs.

  1. #1 google.com 161 scans
  2. #2 nerdtools.co.uk 78 scans
  3. #3 joehuggans.dev 66 scans
  4. #4 stiftelse-forum.se 62 scans
  5. #5 pedago.se 50 scans

Most recent scans

Latest searches across the toolset.

  1. #1 macguru.co.uk May 1, 13:38
  2. #2 hardingsrehab.se May 1, 13:38
  3. #3 netboxblue.org May 1, 13:30
  4. #4 sagsweiteroder.net May 1, 13:29
  5. #5 checkdns.net May 1, 13:29

Why NerdTools?

Everything in one place

Stop juggling browser tabs. Run WHOIS, DNS, SSL, security headers, blacklist checks, and more from a single page.

Built for speed

Results load fast. No sign-up walls, no waiting around. Just enter a domain and go.

Free to use

Core scans are completely free. Create an account to unlock uptime monitoring, screenshot tracking, and saved reports.