Question: What Are Class A IP Addresses?

What are Class A IP addresses used for?

Class A IP addresses are used for huge networks, like those deployed by Internet Service Providers (ISPs).

Class A IP addresses support up to 16 million hosts (hosts are devices that connect to a network (computers, servers, switches, routers, printers…etc.).

What is a 255.255 255.0 subnet?

A subnet mask of 255.255. 255.0 allows for close to 256 unique hosts within the network (since not all 256 IP addresses can be used). … This is the default subnet mask used by Class B networks and provides up to 65,536 IP addresses (256 x 256). The largest Class A networks use a subnet mask of 255.0.

How many subnets are in a class B?

256-255=1.0, 2.0, 3.0, etc. for the third octet. 256-192=64, 128, 192 for the fourth octet. For every valid subnet in the third octet, we get four subnets in the fourth octet: 0, 64, 128, and 192….Subnetting a Class B network address.Subnet64.0128.0last host127.254191.254broadcast127.255191.2551 more row•May 29, 2001

What are the 3 private IP address ranges?

Private addresses include IP addresses from the following subnets:Range from 10.0. 0.0 to 10.255. 255.255 — a 10.0. … Range from 172.16. 0.0 to 172.31. 255.255 — a 172.16. … A 192.168. 0.0 to 192.168. 255.255 range, which is a 192.168. … A special range 100.64. 0.0 to 100.127. 255.255 with a 255.192.

What are the classes of IP?

TCP/IP defines five classes of IP addresses: class A, B, C, D, and E. Each class has a range of valid IP addresses. The value of the first octet determines the class. IP addresses from the first three classes (A, B and C) can be used for host addresses.

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.

What is a Class A subnet?

Class A networks use a default subnet mask of 255.0. 0.0 and have 0-127 as their first octet. The address 10.52. 36.11 is a class A address. … Class B networks use a default subnet mask of 255.255.

How many hosts can a Class A network have?

Table 2-1 IP Addresses Available to Internet HostsAddress ClassFirst Octet RangeNumber of Hosts Per NetworkClass A0 to 12616,777,214Class B128 to 19165,534Class C192 to 223254Aug 27, 2004

What is class A IP range?

x.x.x only. The IP range 127. x.x.x is reserved for loopback IP addresses. The default subnet mask for Class A IP address is 255.0. 0.0 which implies that Class A addressing can have 126 networks (27-2) and 16777214 hosts (224-2).

How many Class A IP addresses are there?

Classful addressing definitionClassLeading bitsNumber of networksClass A0128 (27)Class B1016,384 (214)Class C1102,097,152 (221)Class D (multicast)1110not defined1 more row

How many subnets are in Class A?

This mask provides you with only four subnet bits, or 16 subnets (14 if you’re not using subnet zero) with 1,048,574 hosts each. The valid subnets are 256-240=16, 32, 48, 64, 80, etc., all the way to 224. (Subnets 0 and 240 are available if you’re using subnet zero.)

What are the 2 types of IP address?

‘IP’ stands for ‘Internet Protocol’. There are two versions of IP that currently coexist in the global Internet: IP version 4 (IPv4) and IP version 6 (IPv6). IP addresses are made up of binary values and drive the routing of all data over the Internet. IPv4 addresses are 32 bits long, and IPv6 addresses 128 bits long.

What is the difference between Class A Class B and Class C networks?

Its first octet is 10, which is between 1 and 126, inclusive. Class B networks use a default subnet mask of 255.255. … Class C networks use a default subnet mask of 255.255. 255.0 and have 192-223 as their first octet.

What exactly is a subnet?

A subnetwork or subnet is a logical subdivision of an IP network. The practice of dividing a network into two or more networks is called subnetting. … This results in the logical division of an IP address into two fields: the network number or routing prefix and the rest field or host identifier.

Why are IP addresses used?

An Internet Protocol address (IP address) is a numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication. An IP address serves two main functions: host or network interface identification and location addressing.