Networking Tools & Calculators
Deterministic IP address calculators compliant with RFC 791, RFC 4632, RFC 4291, and RFC 5952. Fast bitwise calculations for subnetting, broadcast addresses, and host bounds.
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IPv4 Subnet Calculator
Bitwise IPv4 subnetting calculations with full network, broadcast, wildcard, and binary breakdowns.
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CIDR to Subnet Mask Calculator
Bidirectional converter between CIDR prefix notation (/24) and dotted-decimal subnet masks.
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IP Range Calculator
Calculate span and total quantity of addresses between start and end IPv4 addresses.
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IPv4 Address Converter
Transform IPv4 addresses into raw 32-bit decimal, binary octets, and hex notation.
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IPv6 Validator & Notation Tool
Validate IPv6 syntax, expand collapsed colons, and inspect address scopes.