Robtex

Up: 217.31.192.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 217.31.208.0/21
Down right: 217.31.216.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
217.31.208.2	A	vpn.68519viernheim.de
217.31.208.101	PTR	host-217-31-208-101.teledata-fttx.de
217.31.208.101	A	smtpintern.68519viernheim.de
217.31.208.101	A	proxy.68519viernheim.de
217.31.208.103	A	freisurfen.68519viernheim.de
217.31.208.115	PTR	host-217-31-208-115.teledata-fttx.de
217.31.208.115	A	ns.68519viernheim.de
217.31.208.115	A	dns2.68519viernheim.de