WAN Gateway Finder

Calculate your gateway IP from WAN IP address

This tool calculates your network gateway IP based on your WAN IP address and subnet mask. The gateway is typically the first usable IP in your subnet.

💡 Auto-Detect scans PTR records to find your gateway. IPv4: scans /8–/30 for "-gw" hostnames. IPv6: scans /48–/127 using ip6.arpa PTR records. Your IP is auto-detected on page load.

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