Learn to Subnet - an easy method with no binary conversions
LearntoSub.net

Learn to Subnet with no binary conversions.

Prefix LengthTotal IPsUsable IPsNetmaskBlock Size
/81677721616777214255.0.0.01
/983886088388606255.128.0.0128
/1041943044194302255.192.0.064
/1120971522097150255.224.0.032
/1210485761048574255.240.0.016
/13524288524286255.248.0.08
/14262144262142255.252.0.04
/15131072131070255.254.0.02
/166553665534255.255.0.01
/173276832766255.255.128.0128
/181638416382255.255.192.064
/1981928190255.255.224.032
/2040964094255.255.240.016
/2120482046255.255.248.08
/2210241022255.255.252.04
/23512510255.255.254.02
/24256254255.255.255.01
/25128126255.255.255.128128
/266462255.255.255.19264
/273230255.255.255.22432
/281614255.255.255.24016
/2986255.255.255.2488
/3042255.255.255.2524