Classless inter-domain routing (CIDR) is a lot of Internet convention (IP) measures that is utilized to make exceptional identifiers for systems and individual gadgets. ... That framework is known as CIDR documentation. CIDR IP tends to comprise of two gatherings of numbers, which are likewise alluded to as gatherings of bits. A system with the subnet veil 255.255.255.0 would have 24 CIDR square.