Free IP, DNS & Network Tools
Check your network. Understand the results. Know what to do next.
Split IP networks into subnets. Calculate masks, broadcast addresses, and host ranges — entirely in your browser.
Look up the approximate geographic location, ISP, and ASN for any public IP address.
Query A, AAAA, MX, TXT, NS, CNAME, and SOA records with plain-language explanations of what each result means.
Measure latency and trace the routing path from our server to any destination. See exactly where packets travel.
Test whether common ports are open or filtered on a public IP or domain. Useful for basic firewall audits.
Check domain registration details including registrar, creation date, expiry date, and name servers.
Verify SSL/TLS certificate validity, issuer, expiry date, and protocol version for any website.