Use this network utility to parse, normalize, convert, or derive IPv4, IPv6, subnet, reverse-DNS, or MAC addressing information under a stated prefix convention.

IP address

Required string input.

Subnet mask

Required string input.

Compute an IPv4 network address from an address and subnet mask. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Network address

The resulting network address returned as a string.

• Syntax and arithmetic validity do not establish reachability, ownership, routing, DNS, privacy, or authorization. IPv4 special-use ranges, IPv6 scopes and compression, prefix boundaries, mapped forms, and host-count conventions require explicit handling.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Validate against current IANA registries and the target platform, test boundary prefixes, and use live network tools only with appropriate authorization.

• IPv4 Broadcast Address Calculator

  Compute an IPv4 broadcast address from an address and subnet mask.

• IPv4 CIDR Calculator

  Compute network address, broadcast, host range, and capacity for an IPv4 CIDR block.

• IPv4 to Integer

  Convert a dotted-decimal IPv4 address into its 32-bit integer form.