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 142 scans
  2. #2 nerdtools.co.uk 63 scans
  3. #3 8.8.8.8 37 scans
  4. #4 tcpcheck.com 28 scans
  5. #5 prosys.net 25 scans

Most recent scans

Latest searches across the toolset.

  1. #1 quizquiz.co.uk Feb 22, 15:58
  2. #2 hostedbyluno.net Feb 22, 15:55
  3. #3 claravia.se Feb 22, 15:48
  4. #4 jandc.net Feb 22, 15:44
  5. #5 hidefhearing.net Feb 22, 15:42

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.