Calculate subnets, format IPv6, perform IP lookups and locate devices.
10 free tools — 100% client-side, no uploads
Find out your current public IP address.
Geo-locate any IP address to discover its physical location.
Get ownership and registration information for an IP.
Check if an IP address is listed on spam blocklists.
Check status of open TCP and UDP network ports.
Look up manufacturer information for any MAC address.
Find Autonomous System Number details and lookup.
Calculate CIDR, netmask, broadcast, and IP ranges for IPv4.
Expand, compress, and format IPv6 network addresses.
Generate random valid MAC addresses for device mockups.
Calculate subnets, format IPv6, perform IP lookups and locate devices. All tools run entirely in your browser using client-side JavaScript. Your data never leaves your device — no server uploads, no tracking, no accounts required. Bookmark this page to access all 10 tools instantly.