Robtex

Up: 213.207.198.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 213.207.199.0/25
Down right: 213.207.199.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
213.207.199.99	PTR	ms2.havayar.com
213.207.199.122	PTR	mail.aryasgs.com
213.207.199.222	A+PTR	mail.persianhawk.com
213.207.199.222	PTR	mail.seabreezeco.com
213.207.199.222	A+PTR	mail.springstarshpg.com