Robtex

Up: 209.160.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 209.160.84.0/23
Down right: 209.160.86.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
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