Robtex

Up: 188.172.192.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 188.172.192.0/24
Down right: 188.172.193.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
188.172.192.2	A+PTR	server24901.teamviewer.com
188.172.192.3	A	server24902.teamviewer.com
188.172.192.4	A+PTR	server24903.teamviewer.com
188.172.192.5	A+PTR	server24904.teamviewer.com
188.172.192.6	A+PTR	server24905.teamviewer.com
188.172.192.18	A	cop.tigervpn.com
188.172.192.42	PTR	188-172-192-42.zygoill.com
188.172.192.50	PTR	server24906.teamviewer.com
188.172.192.51	PTR	server24907.teamviewer.com
188.172.192.52	PTR	server24908.teamviewer.com
188.172.192.53	A	server24909.teamviewer.com
188.172.192.54	A+PTR	server24910.teamviewer.com
188.172.192.58	PTR	188-172-192-58.zygoill.com
188.172.192.58	A	dk2-9agacux9.wtfast.com
188.172.192.66	A	copenhagen.remotepc.com
188.172.192.96	PTR	188-172-192-96.zygoill.com
188.172.192.100	A+PTR	dk-cph-anx-r001.teamviewer.com
188.172.192.101	A+PTR	dk-cph-anx-r002.teamviewer.com
188.172.192.102	A+PTR	dk-cph-anx-r003.teamviewer.com
188.172.192.103	A+PTR	dk-cph-anx-r004.teamviewer.com
188.172.192.104	A+PTR	dk-cph-anx-r005.teamviewer.com
188.172.192.105	PTR	188-172-192-105.zygoill.com
188.172.192.105	A	dk-cph-anx-r006.teamviewer.com
188.172.192.106	PTR	188-172-192-106.zygoill.com
188.172.192.106	A	dk-cph-anx-r007.teamviewer.com
188.172.192.107	A+PTR	dk-cph-anx-r008.teamviewer.com
188.172.192.108	PTR	188-172-192-108.zygoill.com
188.172.192.108	A	dk-cph-anx-r009.teamviewer.com
188.172.192.109	A+PTR	dk-cph-anx-r010.teamviewer.com
188.172.192.239	PTR	188-172-192-239.zygoill.com
188.172.192.240	PTR	188-172-192-240.zygoill.com
188.172.193.6	PTR	1928-0401.server.anx-cus.net
188.172.193.6	A	myhypo.at
188.172.193.6	A	hypovbg.info
188.172.193.25	A	hyperworld.at
188.172.193.25	A	hypercard.at
188.172.193.26	PTR	188-172-193-26.zygoill.com
188.172.193.26	A	hypovbg.ch
188.172.193.38	A	www.tobaccoland.at