Robtex

Up: 198.152.64.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 198.152.64.0/25
Down right: 198.152.64.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
198.152.64.14	PTR	pwionphap06.avaya.com
198.152.64.14	PTR	serviceapps.avaya.com
198.152.64.14	A	h3-netviewer.avaya.com
198.152.64.86	A+PTR	emea-ae.avaya.com
198.152.64.88	A+PTR	emea-av.avaya.com
198.152.64.90	PTR	eumail.avaya.com