Robtex

Up: 212.252.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 212.252.8.0/22
Down right: 212.252.12.0/22

IP	Type	Hostname
212.252.8.13	PTR	fec.ank.sgt-r7-1-ank.sgt-r7-2.superonline.net
212.252.8.20	PTR	host-212-252-8-20.reverse.superonline.net
212.252.8.51	PTR	host-212-252-8-51.reverse.superonline.net
212.252.8.83	PTR	host-212-252-8-83.reverse.superonline.net
212.252.8.84	PTR	host-212-252-8-84.reverse.superonline.net
212.252.8.101	PTR	host-212-252-8-101.reverse.superonline.net
212.252.8.184	PTR	host-212-252-8-184.reverse.superonline.net
212.252.8.202	PTR	host-212-252-8-202.reverse.superonline.net
212.252.8.247	PTR	host-212-252-8-247.reverse.superonline.net
212.252.9.2	PTR	sw1.bak.superonline.net
212.252.9.131	PTR	asy131.as03.sol4.superonline.com
212.252.9.162	PTR	host-212-252-9-162.reverse.superonline.net
212.252.9.179	PTR	asy179.as04.sol4.superonline.com
212.252.10.144	PTR	host-212-252-10-144.reverse.superonline.net
212.252.10.178	PTR	asy178.as10.sol.superonline.com
212.252.10.201	PTR	asy201.as10.sol.superonline.com
212.252.11.23	PTR	host-212-252-11-23.reverse.superonline.net
212.252.11.26	PTR	host-212-252-11-26.reverse.superonline.net
212.252.11.58	PTR	host-212-252-11-58.reverse.superonline.net
212.252.11.80	PTR	host-212-252-11-80.reverse.superonline.net
212.252.11.87	PTR	host-212-252-11-87.reverse.superonline.net
212.252.11.218	PTR	host-212-252-11-218.reverse.superonline.net
212.252.11.219	PTR	host-212-252-11-219.reverse.superonline.net
212.252.12.1	PTR	e3-1.ar01.esk.superonline.net
212.252.12.26	PTR	asy22.as01.esk1.superonline.com
212.252.12.82	PTR	mxnet01.superonline.com
212.252.13.180	PTR	host-212-252-13-180.reverse.superonline.net
212.252.13.221	PTR	host-212-252-13-221.reverse.superonline.net
212.252.15.63	PTR	host-212-252-15-63.reverse.superonline.net
212.252.15.195	PTR	host-212-252-15-195.reverse.superonline.net