What is a subnet calculator?

Asked By: Delfin Babentsev | Last Updated: 17th March, 2020
Category: technology and computing web development
4/5 (200 Views . 37 Votes)
Subnet Calculator is a tool used mostly by Network/IT professionals. Basically, you give the Subnet Calculator a range of IP addresses or CIDR notations and it calculates/generates a list of subnets for you. If you don't know, subnetting is basically the task of dividing your network into smaller pieces.

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Considering this, how do you calculate a subnet?

The number of subnets is found by counting the number of bits by which the initial mask was extended, also known as the subnet bits. Our initial address allocation was 192.168. 0.0 with a mask of 255.255. 0.0.

Additionally, how do I calculate my IP address and subnet mask? 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. The result is the subnet address in which the host is situated.

Similarly, what is Subnet Mask calculator?

Subnet Calculator (IPv4 Only) Subnet Calculator is used to divide an IP network into subnetworks by calculating network address, subnet mask, broadcast address and host IP address range.

What is Subnet example?

On TCP/IP networks, subnets are defined as all devices whose IP addresses have the same prefix. For example, all devices with IP addresses that start with 100.100. 100. would be part of the same subnet. Dividing a network into subnets is useful for both security and performance reasons.

29 Related Question Answers Found

How many subnets are in a 24?

These are called the subnet masks. Subnets masks, like IP addresses, are 32 bit long. The value of subnet mask represents which bits of the IP address are network components and which are host component.

2-3 Subnetting.
Dotted Decimal Value CIDR notation
255.255.254.0 /23
255.255.255.0 /24
255.255.255.128 /25
255.255.255.192 /26

How many addresses are in a 24?

CIDR, Subnet Masks, and Usable IP Addresses Quick Reference Guide (Cheat Sheet)
CIDR Subnet Mask Usable IPs
/26 255.255.255.192 62
/25 255.255.255.128 126
/24 255.255.255.0 254
/23 255.255.254.0 510

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).

What is a 16 subnet?

For the 16 subnet, the valid host range you can assign on a network is 17-30 because the subnet number is 16 and the broadcast address is 31. For the 32 subnet, the valid host range is 33 to 46 because the subnet number is 32 and the broadcast address is 47.

What is subnet and how it works?


A subnet mask is used to divide an IP address into two parts. One part identifies the host (computer), the other part identifies the network to which it belongs. To better understand how IP addresses and subnet masks work, look at an IP (Internet Protocol) address and see how it is organized.

What is a 24 subnet?

An IPv4 subnet mask consists of 32 bits; it is a sequence of ones (1) followed by a block of zeros (0). The following example shows the separation of the network prefix and the host identifier from an address (192.0.2.130) and its associated /24 subnet mask (255.255.255.0).

What is the subnet mask for?

A subnet mask is a number that defines a range of IP addresses available within a network. Multiple subnet masks can organize a single network into smaller networks (called subnetworks or subnets).

What is my private IP?

To determine your computer's private IP address, if you're running Windows, click Start, then Run, then type cmd and press Enter. That should give you a command prompt. Type the command ipconfig and press Enter -- this will show you your private IP address.

How do you calculate a 30 subnet?

In IPv6, the network prefix performs a similar function as the subnet mask in IPv4, with the prefix length representing the number of bits in the address.

IPv6 Subnet Calculator.
Prefix size Network mask Usable hosts per subnet
/29 255.255.255.248 6
/30 255.255.255.252 2
/31 255.255.255.254 0
/32 255.255.255.255 0

How do I find the hostname for an IP address?


Type "nslookup %ipaddress%" in the black box that appears on the screen, substituting %ipaddress% with the IP address for which you want to find the hostname. Find the line labeled "Name" underneath the line with the IP address you entered and record the value next to "Name" as the hostname of the computer.

What is default gateway IP?

Ad. In the networking world, a default gateway is an IP address that traffic gets sent to when it's bound for a destination outside the current network. On most home and small business networks—where you have a single router and several connected devices—the router's private IP address is the default gateway.

What is my public address?

What Is My Public IP Address? Your public IP address is the IP address that is logged by various servers/devices when you connect to them through your internet connection. This is the same IP address that we show on our homepage.

What is a 32 subnet?

the /32 is the CIDR (shorthand) and refers to how many 1's are in the subnet mask. For /32 that is 255.255.255.255 or 11111111.11111111.11111111.1111111. that means you can only have one ip address, on your network before needing a gateway/router to get outside that network.

What is the subnet mask for 30?

Subnet Mask Cheat Sheet
Addresses Netmask
/30 4 255.255.255.252
/29 8 255.255.255.248
/28 16 255.255.255.240
/27 32 255.255.255.224

What are the 4 parts of an IP address?


Four parts of IP address:
  • Every IP address—such as 76.240.
  • Those two sections comprise the basic structure of IP addresses: the network ID and the host ID.
  • The four IP address parts do NOT have to be divided equally—it's not always the case that two parts make up the network ID and two address parts make up the host ID.

Why is subnetting important?

The Importance of Subnetting. Subnetting identifies a network with a range of Internet Protocol addresses in the Internet. It also allows large networks to be divided into smaller networks, each with its own set of IP addresses.

What is subnet mask with example?

Short for subnetwork mask, a subnet mask is data used for bitwise operations on a network of IP addresses that is divided into two or more groups. A common example of a subnet mask for class C IP addresses is 255.255. 255.0, the default subnet mask for many computers and network routers.