Robtex

Up: 134.159.80.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 134.159.80.0/22
Down right: 134.159.84.0/22

IP	Type	Hostname
134.159.84.50	PTR	unknown.telstraglobal.net
134.159.85.34	PTR	unknown.telstraglobal.net
134.159.85.88	PTR	unknown.telstraglobal.net
134.159.86.163	PTR	unknown.telstraglobal.net
134.159.87.185	PTR	unknown.telstraglobal.net