Network & IP

Network and IP tools inspect address notation, subnet boundaries, and IPv6 prefix ranges entirely in the browser.

Common uses

  • Plan IPv4 subnet boundaries or summarize exact IPv4 ranges.
  • Normalize IPv6 addresses and calculate prefix ranges without sending network data outside the browser.

Choose this category for local IP addressing work. It does not include IP geolocation, RDAP, DNS, port scanning, domain WHOIS, risk scoring, or bulk lookup.

All tools

  • IPv4 network toolbox

    Calculate IPv4 subnets, masks, host capacity, ranges, conversions, and same-subnet checks locally.

  • IPv6 toolbox

    Expand, compress, normalize, classify, and calculate IPv6 prefix ranges locally.