Usage echo -e "4.4.2.2\n8.8.8.8" | asnlookup-client | column -t -s $'\t' 4.4.2.2 3356 4.0.0.0/9 LEVEL3 - Level 3 Communications, Inc. US 8.8.8.8 15169 8.8.8.0/24 GOOGLE - Google Inc. US