Robtex

Up: 64.17.0.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 64.17.0.0/25
Down right: 64.17.0.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.17.0.0	PTR	net64-17-0-0.static-customer-corenap.com
64.17.0.52	A+PTR	aus-asa-01.corenap.com
64.17.0.52	A	aus-asa-01-v14.corenap.com
64.17.0.80	PTR	net64-17-0-80.static-customer.corenap.com
64.17.0.80	A	auburn.tk20.com
64.17.0.93	PTR	net64-17-0-93.static-customer.corenap.com
64.17.0.93	A	leeward.tk20.com
64.17.0.102	A+PTR	net64-17-0-102.static-customer.corenap.com
64.17.0.102	A	www.zmansenergybrain.com
64.17.0.102	A	zmansenergybrain.com
64.17.0.122	A	remote.opushomestx.com
64.17.0.162	A+PTR	mail03.atech.com
64.17.0.167	A+PTR	spam.atech.com
64.17.0.171	PTR	www.atech.com
64.17.0.202	PTR	net64-17-0-202.static-customer.corenap.com
64.17.0.211	A	mail.atech.com
64.17.0.221	PTR	net64-17-0-221.static-customer.corenap.com
64.17.0.221	A	noticetech.com
64.17.0.221	A	noticetechnology.com