How Long Is A Subnet Mask?

How do I know my subnet mask?

In the Windows search fields, type cmd, to open command prompt.Press Enter.Type ipconfig/all press Enter.Find your network settings.Your PC’s IP address and your network Subnet Mask and Gateway will be listed..

What is a subnet mask and how is it used?

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 purpose of subnetting?

Subnetting ensures that traffic destined for a device within a subnet stays in that subnet, which reduces congestion. Through strategic placement of subnets, you can help reduce your network’s load and more efficiently route traffic.

What is a 16 subnet?

The number 16 is the first subnet and also your block size. … The valid subnets in this example are 16, 32, 48, 64, 80, 96, 112, 128, 144, 160, 176, 192, 208, 224. As another example, if you had a Class A subnet mask of 255.255. 240.0, you’d use the mask on the second and third octets minus 256.

What does 8 mean in IP address?

A network numbered “10.0. 0.0/8” (which is one of those reserved for private use) is a network with eight bits of network prefix, denoted by “/8” after the oblique. The “8” denotes that there are 24 bits left over in the network to contain IPv4 host addresses: 16,777,216 addresses to be exact.

Can I change the subnet mask?

On the router’s web admin interface, look for an advanced settings category called LAN. In it, go to the LAN IP settings section or tab, and change the value of the Subnet Mask with the one you want.

What is the subnet mask for 192.168 1.0 24?

IP Subnet CalculatorCIDR blockIP range (network – broadcast)Subnet Mask192.168.1.0/25192.168.1.0 – 192.168.1.127255.255.255.128192.168.1.0/24192.168.1.0 – 192.168.1.255255.255.255.0192.168.0.0/23192.168.0.0 – 192.168.1.255255.255.254.0192.168.0.0/22192.168.0.0 – 192.168.3.255255.255.252.028 more rows

What does a subnet mask of 255.255 255.0 mean?

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 IPs is a 16?

CIDR, Subnet Masks, and Usable IP Addresses Quick Reference Guide (Cheat Sheet)CIDRSubnet MaskTotal IPs/19255.255.224.08192/18255.255.192.016,384/17255.255.128.032,768/16255.255.0.065,53629 more rows•Aug 26, 2011

Why is subnet mask important?

Importance Of the Subnet Mask The mask is important as hosts on the same network can talk to each other without a router whereas if they are on a different network then they need a router. So if we incorrectly configure two hosts which are on the same physical network with the following IP addresses and mask.

What does CIDR 16 mean?

0.0 up to 192.168. 255.255 Small network). It means you have used sixteen bits for network address out of thirty two bits and bits are remaining for host addressing.

What is 24 subnet mask?

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 my subnet mask and gateway?

Use the IPCONFIG Command Type “ipconfig” at the prompt and press “Enter.” This command displays all network interfaces and their configurations, including IP addresses, subnet masks and default gateway.

What is subnet mask length?

In IPv4, the prefix (or network portion) of the address can be identified by a dotted-decimal netmask, commonly referred to as a subnet mask. For example, 255.255. 255.0 indicates that the network portion, or prefix length, of the IPv4 address is the leftmost 24 bits.

Is subnet mask always 255?

All subnet masks must end in 0, 128, 192, 224, 240, 248, 252, 254, or 255—the values of each bit position as they are “turned on” left to right in any octet.

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

How many subnets are in a 24?

Deducting 248 from 256 gives us 8 so the subnets are 0, 8, 16, 24, 32, 40, 48… 240,248. 192.168….2-3 Subnetting.Dotted Decimal ValueCIDR notation255.255.255.0/24255.255.255.128/25255.255.255.192/26255.255.255.224/2719 more rows•Dec 12, 2013

What destination adress is 255.255 255.255 for?

255.255. 255.255 – Represents the broadcast address, or place to route messages to be sent to every device within a network. 127.0. 0.1 – Represents “localhost” or the “loopback address”, allowing a device to refer to itself, regardless of what network it is connected to.

What is my local subnet?

To find the subnet mask of your Windows computer, go to the Run box (Windows Key + R) and cmd to open the Command Prompt. Here you can type the command “ipconfig /all” and hit the Enter key.

What happens when you change the subnet mask?

If you change the subnet mask on the statically-configured devices at the same time as you change the subnet mask on DHCP server(s) then you’ll see no changes in behaviour. If you leave devices with the old subnet mask they’ll only be able to talk to devices that still have addresses in the old subnet’s range.