Subnet Calculator

Enter IP Address:
Enter Subnet Mask:
Enter Destination Address:
Step 1: Convert all values to Binary:
a. IP Address:
b. Subnet Mask:
c. Destination Address:
Step 2: Apply Source subnet mask to Source address:
a. Address (from 1a):
Mask (from 1b):
= Src Network:
= Src Network:
Step 3: Apply Source subnet mask to Destination address:
Address (from 1c):
Mask (from 1b):
= Dst Network:
Step 4: Compare the network portions for equality:
Are they the same?

If your are not sure what to do here, click here for a brief tutorial on using this subnet calculator.