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

Scan any domain or IP in seconds.

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

Hide results ? When enabled, this scan will not appear in the most recent searches or the scan leaderboard.

Scan leaderboard

Most searched domains and IPs.

  1. #1 google.com 155 scans
  2. #2 nerdtools.co.uk 78 scans
  3. #3 joehuggans.dev 64 scans
  4. #4 stiftelse-forum.se 56 scans
  5. #5 pedago.se 45 scans

Most recent scans

Latest searches across the toolset.

  1. #1 flaggfix.se Apr 6, 11:20
  2. #2 turkchem.net Apr 6, 09:39
  3. #3 rems-assessment.net Apr 6, 08:39
  4. #4 7550.ee Apr 6, 05:39
  5. #5 myfloridacounties.org Apr 6, 05:00

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.