Robtex

Up: 217.146.0.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 217.146.2.0/24
Down right: 217.146.3.0/24

IP	Type	Hostname
217.146.2.2	A	server20201.teamviewer.com
217.146.2.3	A+PTR	server20202.teamviewer.com
217.146.2.4	A+PTR	server20203.teamviewer.com
217.146.2.5	A+PTR	server20204.teamviewer.com
217.146.2.6	A	server20205.teamviewer.com
217.146.2.34	A+PTR	server20206.teamviewer.com
217.146.2.35	A	server20207.teamviewer.com
217.146.2.36	A+PTR	server20208.teamviewer.com
217.146.2.37	A+PTR	server20209.teamviewer.com
217.146.2.38	A+PTR	server20210.teamviewer.com
217.146.2.54	A	kiev.remotepc.com
217.146.2.101	A	labelito.at
217.146.2.132	A+PTR	ua-iev-anx-r001.teamviewer.com
217.146.2.132	A	router1.rlb.teamviewer.com
217.146.2.132	A	router1.dyntest.teamviewer-test.com
217.146.2.133	PTR	ua-iev-anx-r002.teamviewer.com
217.146.2.133	A	router2.dyntest.teamviewer-test.com
217.146.2.134	A+PTR	ua-iev-anx-r003.teamviewer.com
217.146.2.134	A	router3.dyntest.teamviewer-test.com
217.146.2.134	A	router3.rlb.teamviewer.com
217.146.2.135	A+PTR	ua-iev-anx-r004.teamviewer.com
217.146.2.136	A+PTR	ua-iev-anx-r005.teamviewer.com
217.146.2.136	A	router5.dyntest.teamviewer-test.com
217.146.2.137	A+PTR	ua-iev-anx-r006.teamviewer.com
217.146.2.137	A	router6.dyntest.teamviewer-test.com
217.146.2.138	A+PTR	ua-iev-anx-r007.teamviewer.com
217.146.2.138	A	routerpool9.rlb.teamviewer.com
217.146.2.138	A	router7.rlb.teamviewer.com
217.146.2.139	A+PTR	ua-iev-anx-r008.teamviewer.com
217.146.2.140	A+PTR	ua-iev-anx-r009.teamviewer.com
217.146.2.140	A	router9.dyntest.teamviewer-test.com
217.146.2.141	A+PTR	ua-iev-anx-r010.teamviewer.com
217.146.2.141	A	router10.dyntest.teamviewer-test.com
217.146.2.142	A+PTR	ua-iev-anx-r011.teamviewer.com
217.146.2.143	A+PTR	ua-iev-anx-r012.teamviewer.com