Robtex

Up: 192.149.230.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 192.149.230.0/25
Down right: 192.149.230.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.149.230.4	A	conf.calspan.com
192.149.230.5	A+PTR	barracudasf.calspan.com
192.149.230.5	A+PTR	edge01.calspan.com
192.149.230.5	A	reverseproxy01.calspan.com
192.149.230.6	A	ns2.calspan.com
192.149.230.7	PTR	windtunnel.com
192.149.230.7	A+PTR	fltraining.calspan.com
192.149.230.7	PTR	www.windtunnel.com
192.149.230.9	A	webconf.calspan.com
192.149.230.11	PTR	securetransfer.calspan.com
192.149.230.12	A+PTR	edge01.calspan.com
192.149.230.13	A+PTR	calspan.com
192.149.230.13	PTR	tireresearch.com
192.149.230.13	A+PTR	ns01.calspan.com
192.149.230.14	A+PTR	timesheet.calspan.com
192.149.230.66	A	vpn.calspan.com
192.149.230.70	A	mail01.calspan.com
192.149.230.70	A	mail.calspan.com
192.149.230.71	A	mail.calspan.com