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.

What is 23 subnet?

Subnet Mask Cheat SheetAddressesNetmask/ 24256255.255.255.0/ 23512255.255.254.0/ 221024255.255.252.0/ 212048255.255.248.011 more rows

Are IP address classes still used?

The earlier implementation of IPv4 used address classes to divide the address space into network and node components. This arrangement was very wasteful of IP addresses and was discontinued, but the terms Class A, B and C networks are still used.

What is the maximum number of network IDs in Class A networks?

A Class A network can support approximately 224 hosts, which works out to 16,777,216 hosts. A Class C network can support, on the other hand, can provide host IDs for only a small number of hosts (approximately 28 hosts, or 256), but many more combinations of network IDs are available in the Class C format.