![]() Hope you learned something new today.ĭo share this blog with your friends to spread the knowledge. If it begins with 1111, then it’s a Class E network.Īlternatively, you can learn the range of IP addresses of each class. If it begins with 1110, then it’s a Class D network. If it begins with 110, then it’s a Class C network. If it begins with 10, then it’s a Class B network. If it begins with 0, then it’s a Class A network. Convert the dotted-decimal IP address to its binary equivalent. ![]() You can do it by looking at the first octet of the IP address. So, using the above knowledge given an IP address you can identify the class of the IP address. How to identify the IP class from a given IP address? This class is reserved for future use, research and development purposes. The first two bit of the first octet is always set to The IP address belonging to Class B uses the first two octets to identify the network and the last two octets are used to identify the host. The IP address belonging to Class A range from 1.a.a.a to 126.a.a.a.(where a ranges from 0 to 255) The calculator also shows the typical subnets for IPv4 and the CIDR notation for IPv6 subnets. =2⁷-2 = 126 (Here 2 address is subtracted because 0.0.0.0 and 127.x.x.x are special address. Learn how to use the IP Subnet Calculator to find the network address, usable host range, subnet mask, and IP class of an IPv4 or IPv6 subnet. The IP address bits that have corresponding mask bits asĪnd the address bits that have corresponding mask bits as set toġ0.20.15.1 = 00001010.00010100.00001111.00000001īy comparing corresponding bits of address bits and mask bits we get, The default subnet mask for Class A IP address is 255.0.0.0. The first bit of the first octet is always set to The IP address belonging to Class A uses only the first octet to identify the network and the last three octets are used to identify the host. ![]() Host ID in which are the bits are set to 1 is reserved forįor sending the data from one network to all the other hosts in another network Host ID in which all the bits are set to 0 is not assigned because this represents the network ID. Here, 2 IP addresses are subtracted because The number of hosts in any class is given by the formula: It identifies your machine on the network. The number of networks in any class is given by the formula: The IP address can be further be divided into two parts: Some bits of the IP address represents the network and the remaining bits represent the host. The order of the bits in the first octet of the IP address decides the class of the IP address.
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