Robtex

Up: 213.108.138.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 213.108.139.0/25
Down right: 213.108.139.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
213.108.139.2	A+PTR	ns1.ivstar.net
213.108.139.3	A+PTR	iks-online.net
213.108.139.3	A	www.iks-online.net
213.108.139.4	A+PTR	ivstar.net
213.108.139.4	A	ivant.ru
213.108.139.4	A	www.ivstar.net
213.108.139.11	A+PTR	ns3.ivstar.net
213.108.139.12	A	ns4.ivstar.net
213.108.139.13	A	mail.iks-online.net