A subnetwork or subnet is a logical subdivision of an IP network. Basic of Networking, OSI Model, Binary to Hex and Decimal conversion, TCP/IP, Ethernet Networks, IPV4 address, Privat IP address range, Ipv6 addressing, Transition, Mechanisms, how to subnet in, IPv4, how to subnet IPV6, CIDR or Classless Inter-Domain Routing provides the flexibility of borrowing bits of the Host part of the IP address and using them as Network in Network The benefits of subnetting an existing network vary with each deployment scenario. In the address allocation architecture of the Internet using CIDR and in large organizations, it is necessary to allocate address space efficiently. Subnetting may also enhance routing efficiency, or have advantages in network management when subnetworks are administratively controlled by different entities in a larger organization. Subnets may be arranged logically in a hierarchical architecture, partitioning an organization's network address space into a tree-like routing structure, or other structures such as meshes.An IP address is an address used in order to uniquely identify a device on an IP network. The address is made up of 32 binary bits, which can be divisible into a network portion and host portion with the help of a subnet mask