Robtex

Up: 217.52.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 217.53.0.0/17
Down right: 217.53.128.0/17

IP	Type	Hostname
217.53.1.2	PTR	host.217.53.1.2.nile-online.net
217.53.2.1	PTR	host.217.53.2.1.nile-online.net
217.53.2.4	PTR	host.217.53.2.4.nile-online.net
217.53.3.1	PTR	host.217.53.3.1.nile-online.net
217.53.4.2	PTR	host.217.53.4.2.nile-online.net
217.53.4.4	PTR	host.217.53.4.4.nile-online.net
217.53.7.1	PTR	host.217.53.7.1.nile-online.net
217.53.9.2	PTR	host.217.53.9.2.nile-online.net
217.53.9.3	PTR	host.217.53.9.3.nile-online.net
217.53.9.4	PTR	host.217.53.9.4.nile-online.net
217.53.10.1	PTR	host.217.53.10.1.nile-online.net
217.53.11.3	PTR	host.217.53.111.3.nile-online.net
217.53.11.4	PTR	host.217.53.111.4.nile-online.net
217.53.13.1	PTR	host.217.53.13.1.nile-online.net
217.53.17.3	PTR	host.217.53.17.3.nile-online.net
217.53.21.2	PTR	host.217.53.21.2.nile-online.net
217.53.22.3	PTR	host.217.54.22.3.nile-online.net
217.53.23.2	PTR	host.217.53.23.2.nile-online.net
217.53.25.1	PTR	host.217.53.25.1.nile-online.net
217.53.25.4	PTR	host.217.53.25.4.nile-online.net
217.53.33.2	PTR	host.217.53.33.2.nile-online.net
217.53.35.51	PTR	host.217.53.35.51.nile-online.net
217.53.35.56	PTR	host.217.53.35.56.nile-online.net
217.53.38.1	PTR	host.217.53.38.1.nile-online.net
217.53.50.32	PTR	host.217.53.50.32.nile-online.net
217.53.61.4	PTR	host.217.53.61.4.nile-online.net
217.53.65.4	PTR	host.217.53.65.4.nile-online.net
217.53.71.146	PTR	host.217.53.71.146.nile-online.net
217.53.71.146	A	befrontpage.com
217.53.82.25	PTR	host.217.53.82.25.nile-online.net
217.53.82.58	PTR	host.217.53.82.58.nile-online.net
217.53.84.3	PTR	host.217.53.84.3.nile-online.net
217.53.87.1	PTR	host.217.53.87.1.nile-online.net
217.53.89.138	A	mcsupply.co.uk
217.53.92.1	PTR	host.217.53.92.1.nile-online.net
217.53.92.4	PTR	host.217.53.92.4.nile-online.net
217.53.95.3	PTR	host.217.53.95.3.nile-online.net
217.53.96.2	PTR	host.217.53.96.2.nile-online.net
217.53.138.17	PTR	host.217.53.138.17.nile-online.net
217.53.138.66	PTR	host.217.53.138.66.nile-online.net
217.53.147.2	PTR	host.217.53.147.2.nile-online.net
217.53.148.3	PTR	host.217.53.148.3.nile-online.net
217.53.153.101	PTR	host.217.53.153.101.nile-online.net
217.53.155.3	PTR	host.217.53.155.3.nile-online.net
217.53.156.2	PTR	host.217.53.156.2.nile-online.net
217.53.158.2	PTR	host.217.53.158.2.nile-online.net
217.53.159.1	PTR	host.217.53.159.1.nile-online.net
217.53.159.4	PTR	host.217.53.159.4.nile-online.net
217.53.172.1	PTR	host.217.53.172.1.nile-online.net
217.53.172.2	PTR	host.217.53.172.2.nile-online.net
217.53.175.1	PTR	host.217.53.175.1.nile-online.net
217.53.175.4	PTR	host.217.53.175.4.nile-online.net
217.53.191.145	PTR	host.217.53.191.145.nile-online.net
217.53.194.175	PTR	host.217.53.194.175.nile-online.net
217.53.231.2	PTR	host.217.53.231.2.nile-online.net
217.53.239.1	PTR	host.217.53.239.1.nile-online.net
217.53.242.2	PTR	host.217.53.242.2.nile-online.net
217.53.244.45	PTR	host.217.53.244.45.nile-online.net
217.53.252.2	PTR	host.217.53.252.2.nile-online.net
217.53.252.3	PTR	host.217.53.252.3.nile-online.net