Robtex

Up: 168.75.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 168.75.16.0/21
Down right: 168.75.24.0/21

IP	Type	Hostname
168.75.16.74	A	mailwest.appliedtheory.com
168.75.16.230	A	proximate2.appliedtheory.com
168.75.17.10	PTR	res2.appliedtheory.com
168.75.17.11	PTR	ns2.appliedtheory.com
168.75.17.21	A	portal.appliedtheory.com
168.75.17.22	A	ns2.appliedtheory.org
168.75.17.23	A+PTR	ns2.appliedtheory.net
168.75.17.24	PTR	ns2.ajb.dni.us
168.75.19.43	A	mail.mylifester.com
168.75.27.22	A	www.3sheep.edu