What is the default subnet mask for 172.12.4.22?

Answer 1

There really is no default subnet mask - any network equipment that you set up will require a netmask be provided. The netmask you provided only refers to a specific host; the network on which the host resides can be split up in numerous ways, depending on how the network admins set it up.

Answer 2

The answer depends on the subnet mask being used. 172.12.4.22 is a "class B" address so the default subnet mask is 255.255.0.0 or /16 (each 255 represents 8 binary ones. 8+8 = /16). The default subnet mask would put this IP in the Class B network 172.12.0.0 with a range of valid IP addresses from 172.12.0.1 to 172.12.255.254. 172.12.0.0 is the network address and 172.12.255.255 is the broadcast address each of which are generally not usable (There are special circumstances where they could be used) Typically, entire Class B networks are not issued to one party unless it's an ISP. More likely someone requiring a block of IP's would be issued a subnet of a class network like perhaps 172.12.4.0 /22. This would allow them use of IP's from 172.12.4.0 to 172.12.7.255 (1024 ip addresses). 172.12.4.22 would fall into this subnet. But the company acquiring the block of IP's might want to break it up into a bunch of much smaller subnets so 172.12.4.22 could belong to any of the following subnets of Class B network 172.12.0.0/16 ... 172.12.0.0/17 - 172.12.0.0/18 - 172.12.0.0/19 - 172.12.0.0/20 - 172.12.0.0/21 172.12.4.0/22 - 172.12.4.0/23 - 172.12.4.0/24 - 172.12.4.0/25 - 172.12.4.0/26 172.12.4.0/27 - 172.12.4.16/28 - 172.12.4.16/29 - 172.12.4.20/30

Answer 3

You have not provided enough information for the question to be answered completely and correctly. The subnet mask for that IP address could be anything in a class B range of 255.255.0.0/16. The private IP addressing for that specific IP address that you gave is in a class B range. If I had to guess however, I would start with 255.255.0.0 and then go from there:

They all start with 255.255.

255.0

192.0.

224.0

240.0

248.0

252.0

255.128

255.192

255.240

255.248

255.252

Answer 4

There really is no default subnet mask - any network equipment that you set up will require a netmask be provided. The netmask you provided only refers to a specific host; the network on which the host resides can be split up in numerous ways, depending on how the network admins set it up.

Answer 5

It is not possible to give this information on wikianswers

Answer 6

255.255.255.192

Answer 7

255.255.0.0