Robtex

Up: 185.27.180.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 185.27.180.0/24
Down right: 185.27.181.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
185.27.180.4	A	dns4.x-ion.de
185.27.180.16	A	dns5.x-ion.de
185.27.180.22	A	mx003.allisp.xion.oxcs.net
185.27.180.171	A	mx001.rpost.xion.oxcs.net
185.27.180.171	A	mx003.rpost.xion.oxcs.net
185.27.180.173	A+PTR	mx002.rpost.xion.oxcs.net
185.27.180.173	A	mx004.rpost.xion.oxcs.net
185.27.181.14	A	http.xion.oxcs.net
185.27.181.16	A+PTR	mx001.dclux.xion.oxcs.net
185.27.181.16	A	mx003.dclux.xion.oxcs.net
185.27.181.20	PTR	mx001.join.xion.oxcs.net
185.27.181.20	A	mx003.join.xion.oxcs.net
185.27.181.24	A	imap.rpost.xion.oxcs.net
185.27.181.63	A	xtxmy99.com
185.27.181.74	A+PTR	jimdo.xion.oxcs.net
185.27.181.74	A	imap.jimdo.xion.oxcs.net
185.27.181.74	A	imap.jimdomail.com
185.27.181.76	A+PTR	mx001.jimdo.xion.oxcs.net
185.27.181.76	A	mx003.jimdo.xion.oxcs.net
185.27.181.84	A+PTR	mx001.tiws.xion.oxcs.net
185.27.181.84	A	mx003.tiws.xion.oxcs.net
185.27.181.89	A+PTR	mx001.allisp.xion.oxcs.net
185.27.181.89	A	mx003.allisp.xion.oxcs.net
185.27.181.89	A	mx001.kpn.oxcs.net
185.27.181.90	A+PTR	mx001.tirt.xion.oxcs.net
185.27.181.90	A	mx001.oxcs.net
185.27.181.90	A	mx003.tirt.xion.oxcs.net
185.27.181.91	PTR	mx002.allisp.xion.oxcs.net
185.27.181.91	A	mx004.kpn.oxcs.net
185.27.181.92	A+PTR	mx002.dclux.xion.oxcs.net
185.27.181.92	A	mx004.dclux.xion.oxcs.net
185.27.181.106	A	x-ion.de
185.27.181.106	A	www.x-ion.de
185.27.181.106	A	bosner.de
185.27.181.107	A	mx003.rpost-dev.xion.oxcs.net
185.27.181.109	A+PTR	mx001.rpost.xion.oxcs.net
185.27.181.109	A	mx003.rpost.xion.oxcs.net
185.27.181.110	A+PTR	dclux.xion.oxcs.net
185.27.181.110	A	openxchange.eu
185.27.181.110	A	http.dclux.xion.oxcs.net
185.27.181.114	A+PTR	mx002.join.xion.oxcs.net
185.27.181.114	A	mx004.join.xion.oxcs.net
185.27.181.115	A	mx002.xion.oxcs.net
185.27.181.115	A	mx004.xion.oxcs.net
185.27.181.116	A+PTR	mx002.jimdo.xion.oxcs.net
185.27.181.116	A	mx004.jimdo.xion.oxcs.net
185.27.181.120	A	mx002.rpost.xion.oxcs.net
185.27.181.120	A	mx004.rpost.xion.oxcs.net
185.27.181.123	PTR	tirt.xion.oxcs.net
185.27.181.123	A	http.tirt.xion.oxcs.net
185.27.181.125	A	mx004.tiws.xion.oxcs.net
185.27.181.125	A	mx002.tiws.xion.oxcs.net
185.27.181.126	A+PTR	mx002.tirt.xion.oxcs.net
185.27.181.126	A	mx004.tirt.xion.oxcs.net
185.27.181.126	A	mx002.oxcs.net