What is the 1st address in IP address classes?
Table 2-1 IP Addresses Available to Internet Hosts
Address Class | First Octet Range | Number of Hosts Per Network |
---|---|---|
Class A | 0 to 126 | 16,777,214 |
Class B | 128 to 191 | 65,534 |
Class C | 192 to 223 | 254 |
What are the 4 classes of IP?

IP address classes With an IPv4 IP address, there are five classes of available IP ranges: Class A, Class B, Class C, Class D and Class E, while only A, B, and C are commonly used. Each class allows for a range of valid IP addresses, shown in the following table. Supports 16 million hosts on each of 127 networks.
What are the different type classes of IP address?
IP address classes
Class | Leading bits | End address |
---|---|---|
Class A | 0 | 127.255.255.255 |
Class B | 10 | 191.255.255.255 |
Class C | 110 | 223.255.255.255 |
Class D (multicast) | 1110 | 239.255.255.255 |
How do I know my IP class?
How to identify the IP class from a given IP address?

- If it begins with 0, then it’s a Class A network.
- If it begins with 10, then it’s a Class B network.
- If it begins with 110, then it’s a Class C network.
- If it begins with 1110, then it’s a Class D network.
- If it begins with 1111, then it’s a Class E network.
What is Class A Class B Class C IP address?
If the address is written in decimal format, the first number determines the address. If the first number is between 0 and 127 inclusive, the address is class A. If the first number is between 128 and 191 inclusive, the address is class B. If the first number is between 192 and 223 inclusive, the address is class C.
What is difference between Class A and Class B IP address?
If the address is written in decimal format, the first number determines the address. If the first number is between 0 and 127 inclusive, the address is class A. If the first number is between 128 and 191 inclusive, the address is class B.
What is IP address class AB and C?
Which IP address is class A?
Class A IP addresses, where the 1st bit is 0, encompass the range of 0.0. 0.0 to 127.255. 255.255. This class is for large networks and has 8 bits for network and 24 bits for hosts.
What is network Class E?
Class E: IP addresses belonging to class E are reserved for experimental and research purposes. IP addresses of class E ranges from 240.0. 0.0 – 255.255.
What is difference between Class A and Class B?
When more than one class of stock is offered, companies traditionally designate them as Class A and Class B, with Class A carrying more voting rights than Class B shares. Class A shares may offer 10 voting rights per stock held, while class B shares offer only one.