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IP Address Range Converter

Convert between IP address range, CIDR, netmask, and wildcard for both IPv4 and IPv6.
Enter any of: a single IP, a range (e.g. 10.0.0.1-10.0.0.16), a CIDR (10.0.0.0/28), or subnet+mask. Instantly see all other notations.
All logic runs in your browser for privacy.