companyip.sh

#!/bin/bash
# Takes a company name, prints registerd IP blocks for them

if [ "$1" = "-4" ]; then
  ipv4_only="true"
  shift
elif [ "$1" = "-6" ]; then
  ipv6_only="true"
  shift
fi

if [ -z "$1" ]; then
  echo "Useage: $0 [-4|-6] 'company name'"
  exit 1
fi

db4="http://download.maxmind.com/download/geoip/database/asnum/GeoIPASNum2.zip"
db6="http://download.maxmind.com/download/geoip/database/asnum/GeoIPASNum2v6.zip"

if [ -z "${ipv6_only}" ]; then
  lines=$(curl -s "${db4}" | gunzip | grep -i "$1" |
      sed 's/.*,.*,"//; s/"$//' | sort -u)

  IFS=$'\n'
  for line in $lines; do
    echo "${line}"
    as=$(echo "${line}" | sed 's/[^a-zA-Z0-9].*$//')
    whois -h whois.radb.net -- "-i origin ${as}" | grep -Eo "([0-9.]+){4}/[0-9]+"
  done
  unset IFS
fi

if [ -z "${ipv4_only}" ]; then
  curl -s "${db6}" | gunzip | grep -i "$1" | sort -n
fi