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 156 scans
  2. #2 nerdtools.co.uk 78 scans
  3. #3 joehuggans.dev 66 scans
  4. #4 stiftelse-forum.se 61 scans
  5. #5 sportarkiv.se 49 scans

Most recent scans

Latest searches across the toolset.

  1. #1 swan-valley.co.uk Apr 18, 11:05
  2. #2 zdraveslovensko2026.sk Apr 18, 02:43
  3. #3 dpma.org Apr 17, 21:58
  4. #4 airsystemsinc.net Apr 17, 21:58
  5. #5 sevenoakspodiatry.co.uk Apr 17, 21:54

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.