ipvi
This is an utility for IPv6 similar to whatmask for IPv4
...Unlike the majority of similar utilities, that are accessible only online and only through some Web interface, this tool have just a CLI interface, that is available all time because it runs locally on whatever hardware you prefer.
To make things a little more easy, the outcome of this tool is formated to allow being confortably read on a 80x24 terminal because being online, with an available GUI or even a bare bones text brower is, sometimes, a luxury we just dont have.
Usage:
ipvi <prefix>
ipvi <prefix>/<length>
Examples:
# 1
ipvi 2001:db8:1234:5678:90ab::cdef:1/49
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