Robtex

Up: 199.89.80.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 199.89.88.0/22
Down right: 199.89.92.0/22

IP	Type	Hostname
199.89.94.11	A+PTR	hzmtaext01-t1.ms.com
199.89.94.11	A	mx1.morganstanley.com
199.89.94.11	A	mx.morganstanley.com
199.89.94.12	A+PTR	hzmtaext02-t1.ms.com
199.89.94.12	A	mx1.morganstanley.com
199.89.94.12	A	mx.morganstanley.com
199.89.94.13	PTR	hzmtaext03-t1.ms.com
199.89.94.13	A	mx1.morganstanley.com
199.89.94.13	A	mx.morganstanley.com
199.89.94.21	A+PTR	hzmtaext01-t2.ms.com
199.89.94.23	A+PTR	hzmtaext02-t2.ms.com
199.89.94.41	A+PTR	hzmtaint01.ms.com
199.89.94.42	A+PTR	hzmtaint02.ms.com
199.89.94.62	A+PTR	hzmtabm02.ms.com