DuckIntel / Security Tools
Free subnet calculator. Enter a CIDR range and get network address, broadcast address, usable host range, subnet mask, and total host count.
Free subnet calculator. Enter a CIDR range and get network address, broadcast address, usable host range, subnet mask, and total host count.
Calculate subnet details from CIDR notation. Returns network address, broadcast address, usable host range, subnet mask, wildcard mask, and total host count.
Subnet Calculator is part of DuckIntel, a free browser-based cyber intelligence platform with 59 security tools for SOC analysts, IT administrators, and security professionals. No login or account is required. All tools run entirely in your browser — your data never leaves your machine.
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Part of DuckIntel.io — 59 free browser-based security tools for SOC analysts. No login. No tracking. 100% client-side.