IP and network tools
Find your own IP address, look up DNS records and domain registrations, and check whether an address sits on a mail blacklist.
- What is my IP addressYour public IP address, and what your browser reveals.
- DNS lookupA, AAAA, MX, TXT, NS and more for any domain.
- Domain lookup (WHOIS)Registrar, dates, name servers and status for a domain.
- Blacklist checkIs an IP address on a mail blacklist?
- IP address lookupCountry, city, network and time zone for any IP address.
- IP WHOIS lookupWho owns an IP address, and which network it sits in.
- ASN lookupLook up an autonomous system by number.
- Hostname lookupFind the IP addresses behind a hostname.
- Reverse DNS lookupFind the hostname behind an IP address.
- Internet speed testDownload, upload, latency, jitter and packet loss.
- Random IP generatorRandom IPv4 or IPv6 addresses, optionally inside a range.
- Common ports referenceWhat runs on which port, and which ones to worry about.