Robtex

Up: 217.146.28.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 217.146.28.0/25
Down right: 217.146.28.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
217.146.28.2	A	server22001.teamviewer.com
217.146.28.3	A+PTR	server22002.teamviewer.com
217.146.28.4	A+PTR	server22003.teamviewer.com
217.146.28.5	A+PTR	server22004.teamviewer.com
217.146.28.6	A+PTR	server22005.teamviewer.com
217.146.28.26	A	api.eze.gfpnet.com
217.146.28.28	PTR	buenos-1.cdn77.com
217.146.28.43	PTR	buenos-aires-42.cdn77.com
217.146.28.43	A	1876940257.rsc.cdn77.org
217.146.28.43	A	1192376986.rsc.cdn77.org
217.146.28.50	A+PTR	server22006.teamviewer.com
217.146.28.51	PTR	server22007.teamviewer.com
217.146.28.52	A+PTR	server22008.teamviewer.com
217.146.28.53	PTR	server22009.teamviewer.com
217.146.28.54	A	server22010.teamviewer.com
217.146.28.82	A+PTR	buenosaires1up.monitis.com
217.146.28.82	A	buenosaires1tr.monitis.com
217.146.28.83	A+PTR	buenosaires1tr.monitis.com
217.146.28.90	A	ar3-x94kyyjg.wtfast.com
217.146.28.132	A+PTR	ar-bue-anx-r001.teamviewer.com
217.146.28.132	A	router2.dyntest.teamviewer-test.com
217.146.28.132	A	router2.rlb.teamviewer.com
217.146.28.133	A+PTR	ar-bue-anx-r002.teamviewer.com
217.146.28.133	A	router3.dyntest.teamviewer-test.com
217.146.28.133	A	router3.rlb.teamviewer.com
217.146.28.134	A+PTR	ar-bue-anx-r003.teamviewer.com
217.146.28.134	A	router4.dyntest.teamviewer-test.com
217.146.28.134	A	router4.rlb.teamviewer.com
217.146.28.135	A+PTR	ar-bue-anx-r004.teamviewer.com
217.146.28.135	A	router5.dyntest.teamviewer-test.com
217.146.28.136	A+PTR	ar-bue-anx-r005.teamviewer.com
217.146.28.136	A	router6.dyntest.teamviewer-test.com
217.146.28.136	A	router6.rlb.teamviewer.com
217.146.28.137	A+PTR	ar-bue-anx-r006.teamviewer.com
217.146.28.137	A	router7.dyntest.teamviewer-test.com
217.146.28.137	A	router7.rlb.teamviewer.com
217.146.28.139	A+PTR	ar-bue-anx-r008.teamviewer.com
217.146.28.139	A	router9.dyntest.teamviewer-test.com
217.146.28.140	A+PTR	ar-bue-anx-r009.teamviewer.com
217.146.28.140	A	router10.dyntest.teamviewer-test.com
217.146.28.141	A+PTR	ar-bue-anx-r010.teamviewer.com
217.146.28.141	A	udp.ping.teamviewer.com
217.146.28.141	A	router11.dyntest.teamviewer-test.com
217.146.28.158	A+PTR	ar-bue-anx-p001.teamviewer.com
217.146.28.158	A	router1.rlb.teamviewer.com
217.146.28.158	A	ping3.teamviewer.com
217.146.28.162	A	buenosaires.remotepc.com