Domain Information Groper - Nameserver Tool
install
sudo yum install bind-utils
Check External IP
dig +short myip.opendns.com @resolver1.opendns.com dig TXT +short o-o.myaddr.l.google.com @ns1.google.com
sudo yum install bind-utils
dig +short myip.opendns.com @resolver1.opendns.com dig TXT +short o-o.myaddr.l.google.com @ns1.google.com