Networking

Networking & Subnet Calculators

Calculate IP address ranges, subnet masks, CIDR blocks, and usable host counts with free online networking calculators.

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Instant ResultsCalculates in real-time as you type.

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All Networking & Subnet Calculators

Subnet Calculator

Subnetting is the fundamental architectural technique used in IPv4 networking to partition a master network into smaller, efficient, and secure broadc

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/29 Subnet Calculator

A /29 subnet mask (255.255.255.248) is the standard allocation unit provided by commercial Internet Service Providers (ISPs) for small business static

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/22 Subnet Calculator

A /22 subnet mask (255.255.252.0) is a widely deployed supernet allocation across enterprise corporate campuses, educational institutions, hospital ne

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CIDR Calculator

Classless Inter-Domain Routing (CIDR, introduced in RFC 1519 and RFC 4632) eliminated rigid Class A, B, and C address boundaries, revolutionizing glob

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