Robtex

Up: 208.81.216.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 208.81.216.0/23
Down right: 208.81.218.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
208.81.216.8	A+PTR	mail.healthall.com
208.81.216.9	A+PTR	mail1.healthall.com
208.81.216.9	A	mail1.uchealth.com
208.81.216.10	PTR	mail2.healthall.com
208.81.216.10	A	mail2.uchealth.com
208.81.216.11	PTR	mail01.uchealth.com
208.81.216.12	A+PTR	mail02.uchealth.com
208.81.216.12	A	mail2.lindnercenter.org
208.81.216.12	A	zixvpm02.healthall.com
208.81.216.252	A	mail.uchealth.com
208.81.217.29	A	www.health-alliance.com
208.81.217.29	A	health-alliance.com
208.81.217.44	A	www.universityhospitalcincinnati.com
208.81.217.55	A	allianceprimarycare.com
208.81.217.59	A	drakecenter.com
208.81.217.59	A	www.drakecenter.com
208.81.217.69	A	drakecenter.net
208.81.217.69	A	drakecenter.org
208.81.217.73	A	cincylipsyncbattle.com
208.81.217.74	A	westchestermedcenter.com
208.81.217.74	A	westchestermedcenter.org
208.81.217.80	A	aircareandmobilecare.org
208.81.217.80	A	aircareandmobilecare.net
208.81.217.80	A	aircareandmobilecare.com
208.81.217.86	A	webmail.uchealth.com
208.81.217.86	A	webmail.lindnercenter.org
208.81.217.118	A	universitypointesurgicalhospital.com
208.81.217.118	A	upsurgicalhospital.com
208.81.217.149	A	epic-soap.uchealth.com
208.81.217.150	A	epic-soap.uchealth.com
208.81.217.160	A	my.uchealth.com
208.81.217.189	A	epic-ce.uchealth.com
208.81.218.8	PTR	mail.healthall.com
208.81.218.8	PTR	mail.uchealth.com