Robtex

Up: 199.93.24.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 199.93.24.0/23
Down right: 199.93.26.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.93.24.10	A+PTR	burlisap02.intergen.com
199.93.24.18	PTR	smtp1.intergen.com
199.93.24.21	PTR	smtp2.intergen.com
199.93.24.28	PTR	mail.intergen.com
199.93.24.33	PTR	burltsgw.intergen.com
199.93.24.65	PTR	host-65.intergen.com
199.93.24.65	A	mx3.termoemcali.com
199.93.24.65	A	termoemcali.com
199.93.24.117	PTR	host-117.intergen.com
199.93.24.127	PTR	mail.intergen.com
199.93.24.178	PTR	host-178.intergen.com
199.93.24.230	PTR	host-230.intergen.com
199.93.27.2	A+PTR	intergen3-cp.intergen.com
199.93.27.52	PTR	livelinkdev.intergen.com