Robtex

Up: 170.48.28.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 170.48.30.0/24
Down right: 170.48.31.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
170.48.30.39	A	careallies.com
170.48.30.79	A+PTR	www-cignaglobalhealth-com.extwideip.cigna.com
170.48.30.79	PTR	cignaglobalhealth.com
170.48.30.79	A	cigna.ch
170.48.30.147	A	s-wservice.cigna.com
170.48.31.25	A+PTR	rel2.alegiscare.com