You need to split on whitespace. Here is one way:

# convert @ips to AoA
# oops already is  # @ips = map { [split " "] } @ips;
my @newips = map { $_->[0] } @ips;
my @num    = map { $_->[1] } @ips;
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Update: Oops, misread. The maps stand.

After Compline,
Zaxo