ASN and whois information is searched by querying FQDN and IP addresses with the help of dig and whois commands.

Requirements

• CentOS
  • yum install bind-utils
  • yum -y install http://repo.openfusion.net/centos7-x86_64/whois-5.2.18-1.el7.x86_64.rpm
• Ubuntu/Debian
  • apt-get -y install dnsutils whois

Usage

• bash fqdn_and_ip_asn_whois_lookup.sh domain.com
• bash fqdn_and_ip_asn_whois_lookup.sh X.X.X.X