Robtex

Up: 177.155.170.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 177.155.171.0/25
Down right: 177.155.171.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
177.155.171.140	PTR	177-155-171-140.vtctelecom.com.br
177.155.171.140	A	r1.sn-8xb5n-bg0e.gvt1.com
177.155.171.140	A	r1.sn-8xb5n-bg0e.googlevideo.com
177.155.171.141	PTR	177-155-171-141.vtctelecom.com.br
177.155.171.141	A	r2---sn-8xb5n-bg0e.googlevideo.com
177.155.171.142	PTR	177-155-171-142.vtctelecom.com.br
177.155.171.142	A	r3---sn-8xb5n-bg0e.gvt1.com
177.155.171.142	A	r3---sn-8xb5n-bg0e.googlevideo.com