Enter a valid IPv6 address to calculate abbreviated address, unabbreviated address, total number of IPs, first and last available address.
Set IPv6 Prefix input selector in focus then use up/down keyboard arrows to change it and dynamically recalculate values.
Tool has a limited abbreviated format support. For example, ::1 and 2001:: will work, but 2001::7df or 2001:1d::7df inputs are not supported.