# What is the subnet mask of 30?

## What is the subnet mask of 30?

255.255.255.252
Class C

Network Bits Subnet Mask Number of Subnets
/27 255.255.255.224 8 (6)
/28 255.255.255.240 16 (14)
/29 255.255.255.248 32 (30)
/30 255.255.255.252 64 (62)

What is a 30 bit mask?

So what is a /30 bit mask? A /30 bit mask would be 30 one’s, leaving just 2 zero’s that could be used for host addressing. If you apply the hosts formula, you get 2^2 = 4 – 2 = 2 useable IP addresses. In other words, our network would look like this: Network.

A subnet mask is a 32-bit number created by setting host bits to all 0s and setting network bits to all 1s. In this way, the subnet mask separates the IP address into the network and host addresses. The “255” address is always assigned to a broadcast address, and the “0” address is always assigned to a network address.

### How do I find my subnet mask 32 bit?

Total number of subnets: Using the subnet mask 255.255. 255.248, number value 248 (11111000) indicates that 5 bits are used to identify the subnet. To find the total number of subnets available simply raise 2 to the power of 5 (2^5) and you will find that the result is 32 subnets.

How many IPS are in a 30?

Subnet Cheat Sheet – 24 Subnet Mask, 30, 26, 27, 29, and other IP Address CIDR Network References

/30 255.255.255.252 2
/29 255.255.255.248 6
/28 255.255.255.240 14
/27 255.255.255.224 30

What does 30 mean in IP address?

The /30 signifies that the network part of the address is 30 bits long, leaving 2 bits for the host part which equals 4 available addresses.

#### What is a 31 bit mask?

31-bit Subnet Mask (/31) A 31-bit subnet mask is often used for an interface that is the endpoint of a point-to-point network. The use of 31-bit subnet masks for IPv4 point-to-point links is described in RFC 3021. For 192.168.0.0. Router A is connected via Fast-ethernet 0/0 having ip 192.168.

On Windows. Go to Control Panel > Network and Sharing Centre. Click on your network name and then click Details. You will find the subnet mask along with other network details.

How do I know my subnet bit?

Calculate the subnet bits by looking at the final 8-bit binary word of the 32-bit binary subnet mask. If the final 8-bit binary word is 10000000, then there is one subnet bit and therefore 25 mask bits. If it is 11000000, then there are two subnet bits and therefore 26 mask bits.

## How many subnets are in a 30?

Subnet Cheat Sheet – 24 Subnet Mask, 30, 26, 27, 29, and other IP Address CIDR Network References