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Class A Public & Private IP Address Range. Class A addresses are for networks with large number of total hosts. Class A allows for 126 networks by using the first octet for the network ID. The first bit in this octet, is always zero. The remaining seven bits in this octet complete the network ID.
IP address belonging to class A are assigned to the networks that contain a large number of hosts. Here, class A can support 16 million hosts on 127 networks. Here, the network ID is 8 bits long and the host ID is 24 bits long. IP addresses belonging to class A ranges from 1.x.x.x – 126.x.x.x.
Certain IP addresses are not routable on the Internet and are reserved for Internal networks, they are known as private addresses: 10.0.0.0 -Class A address. 172.16.0.0 through to 172.31.0.0 – 16 contiguous class B networks. 192.168.0.0 through to 192.168.255.0 –256 contiguous class C networks.
Therefore the range of Class A ip address starts from 0 and ends at 127. Explanation 2. Class B has a default mask of 16 bits that translates to 255.255.0.0 in decimal as follows.
There are five classes: A, B, C, D, and E. Class A has a broad address range for large networks, Class B suits medium-sized networks, and Class C is for smaller networks. Class D is reserved for multicast groups, and Class E is experimental.
The range of Class A addresses is from 0.0.0.0 to 127.255.255.255, with 127.x.x.x reserved for loopback testing. Class A networks are typically used by large organizations or ISPs that require many IP addresses for their infrastructure.
They are not routable on Internet. There are three IPv4 private ranges for Class A, Class B and Class C ip address ranges. These private ip address ranges are given below: Class A: 10.0.0.0 to 10.255.255.255 (16.777.216 IP addresses)
If an IP address is written in the decimal notation, check the value of the first section or octet and use the following rules to identify the class of the IP address. If the value is in the range 1 to 127, the address belongs to class A. If the value is in the range 128 to 191, the address belongs to class B.
The first four bits of the IP address help you determine which class the address belongs to, which correspond to the following: Class A addresses are in the range of 1-126.xxx.xxx.xxx; Class B addresses are in the range of 128-191.xxx.xxx.xxx; Class C addresses are in the range of 192-223.xxx.xxx.xxx ## What is a Class A IP address?
Class A known by ruling the first byte, the last 3 bytes dedicated for IP Addresses. Public Range. Example of Class A Public IP Address Range. 1.0.0.1 up to 1.255.255.254. Another IP Address Range from the last Class A Network. 126.0.0.1 up to 126.255.255.254. Private Range. Class A Private Network dedicated for internal usage.