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For questions about Internet Protocol version 4 (IPv4); as specified in RFC791.

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Do any subnets "Network ID" AKA "Network Address" always have an even number as the last octet? [duplicate]

have a "Network ID" AKA "Network Address" (eg: the first address, which is always unusable, and is the boundary between the previous subnet and the current subnet) always have an even number as the 4th IPv4
Justin Goldberg's user avatar