Robtex

Up: 72.0.8.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 72.0.8.0/23
Down right: 72.0.10.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.0.8.6	A	keys1.ingplans.net
72.0.8.7	A	smtp1.ingplans.net
72.0.8.7	A	smtp.ingplans.net
72.0.8.9	A+PTR	jaxmail1.voya.com
72.0.8.9	A	jaxmail1.us.ing.com
72.0.8.10	A+PTR	jaxmail.voya.com
72.0.8.10	A	mail.us.ing.com
72.0.8.68	A	jaxqa.voyamailtest.com
72.0.9.1	A	fvpns500.voya.net
72.0.9.1	A	hlpns501.citistreet.net
72.0.9.2	A	ingplans.net
72.0.9.2	A	www.voyaplans.com
72.0.9.29	A	supervalustar401k.com
72.0.9.29	A	www.supervalustar401k.com
72.0.9.80	A+PTR	ns0.voya.net
72.0.9.84	A	calcs.plan.csplans.com
72.0.9.100	A	csc.voya.com
72.0.9.240	A	copera401k.csplans.com
72.0.9.240	A	starwood401k.csplans.com
72.0.9.240	A	lucentpension.csplans.com
72.0.9.244	A	calpers.ingplans.com
72.0.9.244	A	wackenhutretirementplans.ingplans.com
72.0.9.244	A	msrs.ingplans.com
72.0.11.247	A	intg.planwithease.com