Which mask to use for 1024 address size subnet

0
votes

I am trying to identify if given IPs are from same 1024 SUBNET.

  • 192.168.3.1
  • 192.168.2.19
  • 192.168.1.1

The part I got stuck is that SUBNET address size is 1024.

If I am sure, by checking IP addresses we have to use mask of C class? Because IP is in range between 192.168.0.0 and 192.168.255.255. But the problem is that I am not sure which mask to use.

I found on the internet table of c class addresses, but I am not sure if it's this one.

Is MASK 255.252.0.0 ?

1
ipip-addressmasksubnet
Might be better asked on networkengineering.stackexchange.com - Nathanial

1 Answers

0
votes

I believe all these IPs are from same subnet. I used first table in https://www.aelius.com/njh/subnet_sheet.html

Mask for each one is 255.255.252.0 (We convert mask to binary, and on the end we got 10000000000 - thats exactly 1024 in decimal)

Address I got for each IP after binary multiplication - 192.168.0.0