Robtex

Up: 8.19.64.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 8.19.64.0/22
Down right: 8.19.68.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
8.19.64.2	A+PTR	vpnpl.corio.com
8.19.65.2	A+PTR	pl1pa172.corio.com
8.19.65.3	A+PTR	pl1pa173.corio.com
8.19.65.73	A+PTR	pl1pa499.corio.com
8.19.65.130	A+PTR	pl1ua266.corio.com
8.19.65.131	A+PTR	pl1ua267.corio.com
8.19.65.132	A+PTR	pl1ua268.corio.com
8.19.65.133	A+PTR	pl1ua269.corio.com
8.19.65.136	A+PTR	pl1ua272.corio.com
8.19.65.137	A+PTR	pl1ua273.corio.com
8.19.65.214	A+PTR	pl1ua276.corio.com
8.19.66.58	A+PTR	pl1pa194.corio.com
8.19.66.130	A+PTR	pl1pa184.corio.com
8.19.66.131	A+PTR	pl1pa185.corio.com
8.19.67.2	A+PTR	pl1ua277.corio.com
8.19.67.3	A+PTR	pl1ua278.corio.com
8.19.67.4	A+PTR	pl1wk261.corio.com
8.19.67.5	A+PTR	pl1wk262.corio.com
8.19.67.8	A+PTR	pl1wk283.corio.com
8.19.67.9	A+PTR	pl1vw429.corio.com
8.19.67.90	A+PTR	pl1pa275.corio.com
8.19.67.98	A+PTR	pl1pa195.corio.com
8.19.68.6	A+PTR	bigbrother.corio.com
8.19.68.11	A+PTR	anraap3.corio.com
8.19.68.24	A+PTR	dtlp1aa.corio.com
8.19.68.35	A+PTR	dev.convatecte.corio.com
8.19.68.36	A+PTR	tst.convatecte.corio.com
8.19.68.48	A+PTR	anrdod1.corio.com
8.19.68.48	PTR	anrdod2.corio.com
8.19.68.48	A+PTR	anrdod3.corio.com
8.19.68.104	A+PTR	schagd1.corio.com
8.19.68.105	A+PTR	schagg1.corio.com
8.19.68.106	A+PTR	schagt1.corio.com
8.19.68.107	A+PTR	schagtrn.corio.com
8.19.68.115	A+PTR	schagdr.corio.com
8.19.68.116	A+PTR	oemdev1.corio.com
8.19.68.146	A+PTR	pl1pa207.corio.com
8.19.69.194	A+PTR	pl1pa276.corio.com
8.19.69.240	A	pl1xr192-vip.corio.com
8.19.69.242	A	pl1xr193-vip.corio.com
8.19.70.66	A+PTR	pl1pa244.corio.com
8.19.70.67	A+PTR	pl1pa245.corio.com
8.19.70.74	A+PTR	pl1pa246.corio.com
8.19.70.75	A+PTR	pl1pa247.corio.com
8.19.70.122	A+PTR	pl1vw127.corio.com
8.19.70.123	A+PTR	pl1vw132.hosting.corio.com
8.19.70.124	PTR	pl1vw170.hosting.corio.com
8.19.70.139	A	pl1xr190-vip.corio.com
8.19.70.141	A+PTR	pl1xr191-vip.corio.com
8.19.71.34	A+PTR	pl1vw145.corio.com
8.19.71.35	A+PTR	pl1vw133.corio.com
8.19.71.36	A+PTR	pl1vw134.corio.com
8.19.71.37	A+PTR	pl1vw135.corio.com
8.19.71.66	A+PTR	pl1vw146.corio.com
8.19.71.67	A+PTR	pl1vw147.corio.com
8.19.71.68	A+PTR	pl1vw148.corio.com
8.19.71.69	A+PTR	pl1lr118.corio.com
8.19.71.141	A+PTR	pl1lr104.corio.com
8.19.71.142	A+PTR	pl1lr105.corio.com
8.19.71.143	A+PTR	pl1lr106.corio.com
8.19.71.146	A+PTR	pl1lr113.corio.com
8.19.71.151	A+PTR	pl1lr107.corio.com
8.19.71.152	A+PTR	pl1lr108.corio.com
8.19.71.153	A+PTR	pl1lr109.corio.com
8.19.71.154	A+PTR	pl1lr110.corio.com
8.19.71.155	A+PTR	pl1lr111.corio.com
8.19.71.160	A+PTR	pl1lr114.corio.com