Robtex

Up: 193.30.106.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 193.30.106.0/25
Down right: 193.30.106.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.30.106.147	PTR	sgate.gamise.de
193.30.106.147	PTR	sgate.mbeg.de
193.30.106.147	PTR	infoblox.mibrag.de
193.30.106.148	PTR	mail.fwhw.de
193.30.106.148	A+PTR	mail.gamise.de
193.30.106.148	PTR	mail.helmstedterrevier.de
193.30.106.149	A+PTR	mail1.mibrag.de
193.30.106.149	A+PTR	mail1.helmstedterrevier.de
193.30.106.149	A+PTR	mail1.mibrag-consulting.de