Quick Answer: What Is A Class A Subnet?

What is a Class A IP address?

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 are Class A networks?

Class A addresses are IP addresses that are assigned to network devices, such as computers, and include all addresses in which the first bit of the first octet is set to 0 (zero). … For Class A networks, the first octet represents a network ID that is defined in the address by a subnet mask.

How many unique networks can be created 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 do you subnet?

255.248 or /29.STEP 1: Convert to Binary.STEP 2: Calculate the Subnet Address. To calculate the IP Address Subnet you need to perform a bit-wise AND operation (1+1=1, 1+0 or 0+1 =0, 0+0=0) on the host IP address and subnet mask. … STEP 3: Find Host Range. … STEP 4: Calculate the Total Number of Subnets and Hosts Per Subnet.

How do you create a subnet?

ProcedureClick the Network tab.In the Subnets tab, click Create.In the Create Subnet dialog box, specify subnet details, such as the name, subnet IP address or subnet mask, range of IP addresses, gateway address, and broadcast domain. … Click Create.

Why do we subnet?

The main purpose of subnetting is to help relieve network congestion. Congestion used to be a bigger problem than it is today because it was more common for networks to use hubs than switches. When nodes on a network are connected through a hub, the entire network acts as a single collision domain.

How do you know what class a network is?

Only 1-126 can be used to identify Class A networks because 0 and 127 are reserved. To find the valid host addresses in a Class A network, you must find the network and broadcast address in the IP range. Since the Class A address only uses the first byte to identify the network, the last three octets are host bits.

How many subnets are in a Class A IP address?

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 subnets are in Class A?

The two bits added to the network part from the host part can have four possible values in second octet of a Class A network , 00, 01, 10, and 11. That means, we can get four networks if we do a 2-bit subnetting on a Class A network. Ths subnet mask to use for Class A network 2-bit subnetting is 255.192. 0.0.

What is the 16 subnet?

65536Subnet Mask Cheat SheetAddressesNetmask/ 198192255.255.224.0/ 1816384255.255.192.0/ 1732768255.255.128.0/ 1665536255.255.0.011 more rows

What is a Class C subnet?

A class C network would have a subnet mask of 255.255. 255.0 which means that 24 bits are used for the network. In CIDR notation this is designated by a /24 following the IP address.

What are the 3 classes of subnet mask?

The three default subnet masks are 255.0. 0.0 for Class A, 255.255. 0.0 for class B, and 255.255. 255.0 for Class C.

What class is a 172 IP address?

class B addressThe address 172.16. 52.63 is a class B address. Its first octet is 172, which is between 128 and 191, inclusive. Class C networks use a default subnet mask of 255.255.

What is the subnet mask for Class A?

Classful addressing definitionClassLeading bitsDefault subnet mask in dot-decimal notationClass A0255.0.0.0Class B10255.255.0.0Class C110255.255.255.0Class D (multicast)1110not defined1 more row

How do you calculate subnet mask for Class A?

Valid subnet address: To figure out the valid subnet address, simply subtract the subnet mask from 256. For example, if you had a Class A mask of 255.240. 0.0, the equation would be 256-240=16….128.0 subnet:Subnet: 10.0. 128.0.Broadcast: 10.0. 255.255.Valid host range: 10.0. 128.1 through 10.0. 255.254.

What does 24 mean in IP address?

There are two parts to an IP address, the network number and the host number. The subnet mask shows what part is which. /24 means that the first 24 bits of the IP address are part of the Network number (192.168. 0) the last part is part of the host address (1-254).

How do you calculate class A IP address?

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 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. If the first number is between 224 and 239 inclusive, the address is class D.