# What Is A Class A Network IP Address?

## What are the 3 major classes of an IP network?

Currently there are three classes of TCP/IP networks.

Each class uses the 32-bit IP address space differently, providing more or fewer bits for the network part of the address.

These classes are class A, class B, and class C..

## How many IP addresses are in a Class A network?

Key Concept: In the “classful” IP addressing scheme, a Class A network contains addresses for about 16 million network interfaces; a Class B about 65,000; and a Class C, 254. As you can see, there is quite a disparity in the number of hosts available for each network in each of these classes.

## How many networks are there in Class A?

Table 2-1 IP Addresses Available to Internet HostsAddress ClassFirst Octet RangeNumber of Possible NetworksClass A0 to 126127 (2 are reserved)Class B128 to 19116,384Class C192 to 2232,097,152Aug 27, 2004

## How many subnets are in a 24?

Class BNetwork BitsSubnet MaskNumber of Subnets/24255.255.255.0256 (254)/25255.255.255.128512 (510)/26255.255.255.1921024 (1022)/27255.255.255.2242048 (2046)11 more rows

## How many 20 subnets are in a 16?

Network BitsSubnet MaskNumber of Subnets/20255.255.240.016 (14)/21255.255.248.032 (30)/22255.255.252.064 (62)/23255.255.254.0128 (126)11 more rows•Aug 16, 2003

## How do you classify an IP address class?

IP addresses belonging to class C ranges from 192.0. x – 223.255. 255. … Class D does not posses any sub-net mask. IP addresses belonging to class D ranges from 224.0. 0.0 – 239.255. … IP addresses belonging to class E are reserved for experimental and research purposes. IP addresses of class E ranges from 240.0.

## What are the first 3 octets of an IP address?

The first 24 bits (the first three octets) identify the network and the remaining 8 bits indicate the host within the network. An example of a Class C IP address is 200.168. 212.226 where “200.168. 212” identifies the network and “226” identifies the host on that network.

## What is a Class A IP address?

Class A IP addresses support up to 16 million hosts (hosts are devices that connect to a network (computers, servers, switches, routers, printers…etc.) and a Class A network can be divided into 128 different networks. Class B IP addresses are used for medium and large-sized networks in enterprises and organizations.

## What is class A network range?

Class A addresses range from 0.0. 0.0 to 127.255. 255.255. The leftmost bit in a class A network is always 0.

## How many subnets are in Class A?

The reason you would use this with a Class A mask is because it can give you up to 4,194,304 subnets with two hosts each.