#!/bin/ksh
#
#while read INPUT ; do
for INPUT in `cat ${1}`
 do
        if [[ $INPUT == *.in-addr.arpa ]]; then
                IFS=. read -a Array <<< "$INPUT"
                #echo "$IFS" # notice that IFS didn't change afterwards
                if [[ ${Array[4]} == arpa ]]; then
                        domain="${Array[2]}.${Array[1]}.${Array[0]}.0/24"
                elif [[ ${Array[3]} == arpa ]]; then
                        domain="${Array[1]}.${Array[0]}.0.0/16"
                fi
        else
                echo "Whoops"
        fi
        echo $1
        echo $domain
done <$1