Pfx.host
You're seeing just the function
host, go back to Pfx module for more information.
Specs
Return the nth host in given pfx.
The result is in the same format as pfx.
Note that offset nth wraps around. See Pfx.member/2.
Example
iex> host("10.10.10.0/24", 128)
"10.10.10.128"
iex> host({{10, 10, 10, 0}, 24}, 128)
{{10, 10, 10, 128}, 32}
iex> host(%Pfx{bits: <<10, 10, 10>>, maxlen: 32}, 128)
%Pfx{bits: <<10, 10, 10, 128>>, maxlen: 32}
# wraps around
iex> host("10.10.10.0/24", 256)
"10.10.10.0"