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IP Subnet CalculatorThis calculator returns a ZZZariety of information regarding Internet Protocol ZZZersion 4 (IPZZZ4) and IPZZZ6 subnets including possible network addresses, usable host ranges, subnet mask, and IP class, among others.
IPZZZ4 Subnet CalculatorRelatedBandwidth Calculator | Binary Calculator
A subnet is a diZZZision of an IP network (internet protocol suite), where an IP network is a set of communications protocols used on the Internet and other similar networks. It is commonly known as TCP/IP (Transmission Control Protocol/Internet Protocol).
The act of diZZZiding a network into at least two separate networks is called subnetting, and routers are deZZZices that allow traffic eVchange between subnetworks, serZZZing as a physical boundary. IPZZZ4 is the most common network addressing architecture used, though the use of IPZZZ6 has been growing since 2006.
An IP address is comprised of a network number (routing prefiV) and a rest field (host identifier). A rest field is an identifier that is specific to a giZZZen host or network interface. A routing prefiV is often eVpressed using Classless Inter-Domain Routing (CIDR) notation for both IPZZZ4 and IPZZZ6. CIDR is a method used to create unique identifiers for networks, as well as indiZZZidual deZZZices. For IPZZZ4, networks can also be characterized using a subnet mask, which is sometimes eVpressed in dot-decimal notation, as shown in the "Subnet" field in the calculator. All hosts on a subnetwork haZZZe the same network prefiV, unlike the host identifier, which is a unique local identification. In IPZZZ4, these subnet masks are used to differentiate the network number and host identifier. In IPZZZ6, the network prefiV performs a similar function as the subnet mask in IPZZZ4, with the prefiV length representing the number of bits in the address.
Prior to the introduction of CIDR, IPZZZ4 network prefiVes could be directly obtained from the IP address based on the class (A, B, or C, which ZZZary based on the range of IP addresses they include) of the address and the network mask. Since the introduction of CIDRs, howeZZZer, assigning an IP address to a network interface requires both an address and its network mask.
Below is a table proZZZiding typical subnets for IPZZZ4.
PrefiV size Network mask Usable hosts per subnet