Robtex

Up: 199.174.64.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 199.174.64.0/20
Down right: 199.174.80.0/20

IP	Type	Hostname
199.174.65.109	A	wan-v3qsgbd.lax.biz.mindspring.com
199.174.65.209	A	wan-v3qsgeh.lax.biz.mindspring.com
199.174.80.90	A	mail2.sugical.com
199.174.80.95	A	user-v3qsk2v.biz.mindspring.com
199.174.80.202	A	user-v3qsk6a.biz.mindspring.com
199.174.85.98	A	user-v3qslb2.biz.mindspring.com
199.174.92.32	PTR	user-v3qsn10.biz.mindspring.com