About IPNetKit

IPNetKit is a small set of free network tools built to answer everyday questions quickly: what is my IP, who owns this address, are my DNS records right, is this port open, how fast is my connection.

How the tools work

• Your own IP details come straight from the connection; we do not use tracking databases or store them.
• IP ownership comes from the official regional internet registries through RDAP.
• DNS answers come live from Cloudflare's public 1.1.1.1 resolver over encrypted DNS-over-HTTPS.
• Calculators such as the subnet calculator run entirely in your browser.

Tools

• What is my IP: Your public IPv4/IPv6 address, ISP and location.
• IP lookup: Owner, network and country of any IP address.
• DNS lookup: A, AAAA, MX, TXT, NS, CNAME, SOA and CAA records.
• Subnet calculator: Network, broadcast, host range and mask for any CIDR.
• Port checker: Check whether a port is open on your own IP.
• Speed test: Download, upload, latency and jitter.
• What is my browser: Browser, OS, user agent and screen details.

The site is free and supported by advertising. Suggestions and bug reports are welcome at contact@ipnetkit.com.