Robtex

Up: 209.160.80.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 209.160.80.0/22
Down right: 209.160.84.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
209.160.81.53	A	ns2.virtu.com
209.160.81.100	PTR	mx2.virtu.com
209.160.81.100	A	mx2.virtufinancial.com
209.160.81.101	A	mx2.virtu.com
209.160.84.84	A	bull.bhtrader.com
209.160.84.84	A	ns4.bhtrader.com
209.160.84.84	A	ns2.bhtrader.com
209.160.84.100	A+PTR	mx.virtu.com
209.160.84.100	A	mx.virtufinancial.com
209.160.86.94	A	ns6.ewtllc.com