Network
IP lookups, DNS tools, HTTP header inspection, port scanners, and network diagnostic utilities.
Free online network and IT diagnostic tools — DNS lookup, SSL certificate checker, WHOIS lookup, IP geolocation, port scanner, HTTP header inspection, and bandwidth speed tests. Everything network engineers and system administrators need without installing CLI tools.
10 tools · always free · no account needed
SSL Certificate Checker
Check SSL certificate details, expiry, and chain
WHOIS Lookup
Look up domain registration and ownership info
Port Checker
Test if ports are open on a host or IP
Ping / Traceroute
Basic network diagnostics and route tracing
IP Geolocation
Find country, city, and ISP for any IP address
Subdomain Finder
Enumerate subdomains for a domain
Domain Age Checker
Check when a domain was first registered
Internet Speed Test
Test download speed, upload speed, ping, and jitter with a visual gauge
Domain Availability Checker
Check if a domain name is available across 30+ extensions instantly
API Status Dashboard
Quick health check for multiple API endpoints
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