Subnetting Calculator



Address:
Network Address:
Broadcast:
Netmask:
Slash:
First Usable Host:
Last Usable Host:
Usable Hosts:
Wildcard:

Calculate all the subnet information you may need. It's fast, it's easy, it allows you to cut and paste and it accepts both CIDR (/24) and netmask notation (255.255.255.0). You may also want to check out the more advanced calculator which will allow you to plan a whole network out.