Robtex

Up: 64.5.146.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 64.5.147.0/25
Down right: 64.5.147.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.5.147.2	A+PTR	mail3.cpschools.com
64.5.147.3	A+PTR	mail.cpschools.com
64.5.147.3	A+PTR	webmail.cps.k12.va.us
64.5.147.3	A+PTR	mail.webmail.cps.k12.va.us
64.5.147.5	A+PTR	mail1.cpschools.com
64.5.147.5	A	webmail1.cps.k12.va.us
64.5.147.6	A+PTR	mail2.cpschools.com
64.5.147.6	A	webmail2.cps.k12.va.us
64.5.147.7	A+PTR	mediacast.cps.k12.va.us
64.5.147.8	A+PTR	eclipse.cps.k12.va.us
64.5.147.12	A	trane.cps.k12.va.us
64.5.147.17	A	us.cpschools.com
64.5.147.17	A	us.cps.k12.va.us
64.5.147.84	A+PTR	cpschools.com
64.5.147.84	A+PTR	www.cpschools.com
64.5.147.84	A+PTR	cps.k12.va.us
64.5.147.100	A+PTR	vpn01.cpschools.com
64.5.147.110	A	synergyportal.cpschools.com