Robtex

Up: 199.242.0.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 199.242.0.0/24
Down right: 199.242.1.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.242.0.13	PTR	myapps.blackrock.com
199.242.0.65	PTR	mailgw.blackrock.com
199.242.0.65	A	mailgw.blackrockadvisors.net
199.242.0.65	A	mailgw.blackrockadvisors.com
199.242.0.66	PTR	ns2.blackrock.com
199.242.0.66	A	ns2.blackrockfinancial.com
199.242.0.66	A	ns2.blackrockadvisers.net
199.242.0.69	PTR	nyczwww001-vi2.blackrock.com
199.242.0.72	A	blackrockfondsen.nl
199.242.0.125	A+PTR	nyczmls001.blackrock.com
199.242.0.125	A	nyczmls001.bfm.com