Robtex

Up: 188.172.232.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 188.172.233.0/25
Down right: 188.172.233.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
188.172.233.4	PTR	server23709.teamviewer.com
188.172.233.5	PTR	server23710.teamviewer.com
188.172.233.6	PTR	188-172-233-6.ctelnetco.com
188.172.233.6	A	mail0601.teamviewer.com
188.172.233.7	PTR	188-172-233-7.ctelnetco.com
188.172.233.8	PTR	188-172-233-8.ctelnetco.com
188.172.233.11	PTR	188-172-233-11.ctelnetco.com
188.172.233.12	PTR	188-172-233-12.ctelnetco.com
188.172.233.15	PTR	188-172-233-15.ctelnetco.com
188.172.233.16	PTR	188-172-233-16.ctelnetco.com
188.172.233.23	PTR	188-172-233-23.ctelnetco.com
188.172.233.24	PTR	188-172-233-24.ctelnetco.com
188.172.233.27	PTR	188-172-233-27.ctelnetco.com
188.172.233.31	PTR	188-172-233-31.ctelnetco.com
188.172.233.32	PTR	188-172-233-32.ctelnetco.com
188.172.233.39	PTR	188-172-233-39.ctelnetco.com
188.172.233.40	PTR	188-172-233-40.ctelnetco.com
188.172.233.47	PTR	188-172-233-47.ctelnetco.com
188.172.233.48	PTR	188-172-233-48.ctelnetco.com
188.172.233.57	PTR	188-172-233-57.ctelnetco.com
188.172.233.57	A	www.datacrossmedia.de
188.172.233.57	A	datacrossmedia.de
188.172.233.58	A	datanorm-viewer.de
188.172.233.58	A	datanorm-programme.de
188.172.233.58	A	datanorm4.de
188.172.233.60	PTR	188-172-233-60.ctelnetco.com
188.172.233.60	A	datanorm-manager.de
188.172.233.62	PTR	188-172-233-62.ctelnetco.com
188.172.233.62	A	catalog-builder.de
188.172.233.62	A	pik-software.de
188.172.233.63	PTR	188-172-233-63.ctelnetco.com
188.172.233.64	PTR	188-172-233-64.ctelnetco.com
188.172.233.101	A+PTR	anax.staging.zauberlist.com
188.172.233.142	A	munich.remotepc.com
188.172.233.164	A+PTR	de-muc-anx-r001.teamviewer.com
188.172.233.165	A+PTR	de-muc-anx-r002.teamviewer.com
188.172.233.166	A+PTR	de-muc-anx-r003.teamviewer.com
188.172.233.167	A+PTR	de-muc-anx-r004.teamviewer.com
188.172.233.168	A+PTR	de-muc-anx-r005.teamviewer.com
188.172.233.169	A+PTR	de-muc-anx-r006.teamviewer.com
188.172.233.170	A+PTR	de-muc-anx-r007.teamviewer.com
188.172.233.171	A+PTR	de-muc-anx-r008.teamviewer.com
188.172.233.171	A	routerpool9.rlb.teamviewer.com
188.172.233.172	A+PTR	de-muc-anx-r009.teamviewer.com
188.172.233.173	A+PTR	de-muc-anx-r010.teamviewer.com
188.172.233.174	A+PTR	de-muc-anx-r011.teamviewer.com
188.172.233.175	A	de-muc-anx-r012.teamviewer.com
188.172.233.176	PTR	188-172-233-176.ctelnetco.com
188.172.233.176	A	de-muc-anx-r013.teamviewer.com
188.172.233.177	A	de-muc-anx-r014.teamviewer.com
188.172.233.178	A	de-muc-anx-r015.teamviewer.com
188.172.233.240	PTR	188-172-233-240.ctelnetco.com