Robtex

Up: 83.123.128.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 83.123.192.0/19
Down right: 83.123.224.0/19

IP	Type	Hostname
83.123.211.78	A	mail.ns1.mail.0043316d91320922aa9bb67676200da6c47044d428473aeb76a4aba3.6.ewsxz.com
83.123.216.147	PTR	too.stupid.to.configure.reverse.dns
83.123.226.224	PTR	too.stupid.to.configure.reverse.dns
83.123.241.234	PTR	too.stupid.to.configure.reverse.dns