Clear outputs
Security-aware
Practical guidance
Tools that help you spot issues quickly.
Run checks across DNS, SSL, headers, email configuration, uptime and ports — with clear recommendations you can act on.
Network + DNS
Resolve and verify records fast
TLS + headers
Security posture at a glance
Email config
SPF / DKIM / DMARC verification
Tools
Pick a tool below. Each page focuses on one job and keeps outputs easy to understand.
System check
Enter a domain → run DNS, SSL, headers, uptime, and email configuration checks.
Open System check
Speed test
Run a bandwidth speed check and confirm your connection performance.
Open Speed test
DNS lookup
Full DNS lookup from IP or domain name — records, targets, and TTLs.
Open DNS lookup
Whois
Lookup domain or IP registration information and key ownership details.
Open Whois
IP lookup
Geo, ASN, reverse DNS, network ownership, and free DNS blocklist checks.
Open IP lookup
SSL checker
Check certificate state, chain, expiry, and supported TLS configuration.
Open SSL checker
Email DNS test
Validate SPF, DKIM, and DMARC for deliverability and trust.
Open Email DNS test
HTTP headers checker
Inspect security headers and see practical recommendations.
Open HTTP headers checker
Port checker
Check if a port (or range) is open or closed against an IP address.
Open Port checker
Code validator
Validate, pretty-print, and minify JSON, XML, HTML, CSS, JS, and YAML.
Open Code validator
Tips & tricks
OS-focused guides and tips — fast, practical, and easy to follow.
Open Tips & tricks
AI Chat
An in-browser AI chat assistant for quick answers and guidance.
Runs locally in your browser using your device’s computing power — not a hosted model.
Open AI Chat
Tools
Need help fixing what the tools find?
Browse step-by-step Tips & Tricks for Windows, macOS, and Linux — or talk to us if you want it fixed properly.
No obligation. Straight answers. Built around your requirements.
Security-first
Performance
Real support
