Robtex

Up: 27.66.0.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 27.66.0.0/19
Down right: 27.66.32.0/19

IP	Type	Hostname
27.66.0.7	PTR	localhost
27.66.0.61	PTR	localhost
27.66.0.72	PTR	localhost
27.66.0.75	PTR	localhost
27.66.0.163	PTR	localhost
27.66.0.195	PTR	localhost
27.66.0.203	PTR	localhost
27.66.0.211	PTR	localhost
27.66.0.227	PTR	localhost
27.66.2.56	PTR	localhost
27.66.10.18	PTR	localhost
27.66.11.19	PTR	localhost
27.66.16.107	PTR	localhost
27.66.17.2	PTR	localhost
27.66.35.18	PTR	localhost
27.66.39.2	PTR	localhost