Network Tools
For network engineers and sysadmins working with IP addressing, DNS resolution, domain registration data, and connectivity diagnostics.
Subnet Calculator
Calculate network address, broadcast, usable range, and total hosts from IP + CIDR.
Use Tool →
DNS Lookup
Query DNS records (A, MX, CNAME, TXT, NS) for any domain via Google's DNS API.
Use Tool →
IP Lookup
Find your public IP address, ISP, city, country, and timezone information.
Use Tool →
WHOIS Lookup
Query WHOIS/RDAP data for any domain — registrar, creation date, expiry, and more.
Use Tool →
Port Checker
Check if a port is open, closed, or filtered on any public host — tested from the internet, not your machine.
Use Tool →