Robtex

Up: 198.203.220.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 198.203.221.0/25
Down right: 198.203.221.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
198.203.221.12	A+PTR	www.nebraskablue.com
198.203.221.13	A+PTR	www.nebraskablues.com
198.203.221.13	A	nebraskablues.com
198.203.221.14	A+PTR	nebraskablue.com
198.203.221.40	A+PTR	mail2.bcbsne.com
198.203.221.41	A+PTR	bcbsne.com
198.203.221.41	A	accessbluemembers.com
198.203.221.42	PTR	rasdev.nebraskablue.com
198.203.221.42	A	bcbsneprovider.com
198.203.221.42	A	accessblueproviders.com
198.203.221.43	A	bcbsnemember.com
198.203.221.45	PTR	lyncwebsvcext.nebraskablue.com
198.203.221.45	A	bcbsnemedicare.com
198.203.221.46	A	neblue-connect.com
198.203.221.46	A	neblueconnect.com
198.203.221.48	A+PTR	ras2.bcbsne.com
198.203.221.48	PTR	accessedgelync.nebraskablue.com
198.203.221.49	A+PTR	comm.bcbsne.com
198.203.221.49	A	seccomm.bcbsne.com
198.203.221.50	A+PTR	accessedgelync.nebraskablue.com
198.203.221.51	A+PTR	accessedgelync.nebraskablue.com
198.203.221.57	PTR	zixvpm.nebraskablue.com
198.203.221.58	PTR	zixvpm.nebraskablue.com
198.203.221.60	A	lyncwebsvcext.nebraskablue.com
198.203.221.60	A	dialin.nebraskablue.com
198.203.221.61	A+PTR	members.bcbsne.com
198.203.221.64	A	login.nebraskablue.com
198.203.221.65	A	apply.bcbsne.com
198.203.221.71	A+PTR	members.nebraskablue.com
198.203.221.73	PTR	www.networkblue.bcbsne.com
198.203.221.73	A+PTR	bod.nebraskablue.com
198.203.221.80	A+PTR	ns1.bcbsne.com
198.203.221.91	A+PTR	sts.nebraskablue.com
198.203.221.92	PTR	myaccount.nebraskablue.com
198.203.221.95	A	goodlifepartnersrx.com
198.203.221.100	PTR	azulparati.com
198.203.221.100	A+PTR	blue4ne.com
198.203.221.100	PTR	blue4nu.com
198.203.221.104	PTR	remmail.bcbsne.com
198.203.221.104	A+PTR	rmail.nebraskablue.com
198.203.221.119	A	livefearlessne.com