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

Domain Scan URL Shortener Tools About

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 319 scans
  2. #2 nerdtools.co.uk 232 scans
  3. #3 joehuggans.dev 204 scans
  4. #4 stiftelse-forum.se 192 scans
  5. #5 pedago.se 181 scans

Most recent scans

Latest searches across the toolset.

  1. #1 mutualassurance.net May 29, 21:27
  2. #2 astrocenter.co.uk May 29, 21:27
  3. #3 assutmedical.net May 29, 21:27
  4. #4 asska.se May 29, 21:27
  5. #5 aquaphil.net May 29, 21:27

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. Short links are available when you need them.

Explore every tool

Free WHOIS Lookup Free Domain Expiry Checker Free DNS Lookup Tool Free SSL Certificate Checker Free TLS Protocol Checker Free Security Headers Checker Free Redirect Checker Free SEO Check Tool Free SPF Record Checker Free DMARC Record Checker Free DKIM Record Checker Free CAA Record Checker Free MX Record Checker Free Blacklist Check Free IP Info Lookup Free IP Reputation Check Free Online Ping Tool Free Online Port Scanner