Robtex

Up: 57.80.0.0/13
Can't show all results, try to descend to a more specific CIDR
Down left: 57.84.0.0/15
Down right: 57.86.0.0/15

IP	Type	Hostname
57.84.0.2	A+PTR	loop-0-s01.mow1.equant.net
57.84.80.30	PTR	matrix.alloyant.com
57.86.97.162	A	norway.acnielsen.co.uk
57.86.97.200	A	ns1.mfa.no
57.86.97.200	A	srv1-norvege.ma
57.87.2.26	PTR	troas.ru
57.87.2.51	A	mx.sibir.pack.ru