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 152 scans
  2. #2 nerdtools.co.uk 70 scans
  3. #3 joehuggans.dev 47 scans
  4. #4 8.8.8.8 37 scans
  5. #5 prosys.net 28 scans

Most recent scans

Latest searches across the toolset.

  1. #1 almanaar.net Mar 8, 08:18
  2. #2 firstqualityhomes.net Mar 8, 08:15
  3. #3 liturgieportal.org Mar 8, 07:50
  4. #4 charles-trenet.net Mar 8, 07:48
  5. #5 myui.org Mar 8, 07:47

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.