Robtex

Up: 217.65.40.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 217.65.40.0/25
Down right: 217.65.40.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
217.65.40.30	PTR	vpn1-clt1.purepeak.com.40.65.217.in-addr.arpa
217.65.40.33	PTR	ip-217-65-40-33.purepeak.com
217.65.40.33	A	nservice.one-tap.co
217.65.40.34	PTR	ip-217-65-40-34.purepeak.com
217.65.40.34	A	oadj.taptica.com
217.65.40.35	PTR	ip-217-65-40-35.purepeak.com
217.65.40.35	A	impression.taptica.com
217.65.40.36	PTR	ip-217-65-40-36.purepeak.com
217.65.40.36	A	srv.mobileappslive.com
217.65.40.36	A	clk.impressions.mobi
217.65.40.37	A	network.taptica.com
217.65.40.142	PTR	vm03.purepeak.com
217.65.40.198	PTR	ip-217-65-40-198.purepeak.com
217.65.40.198	A	ns03.purepeak.com
217.65.40.199	PTR	nms03.purepeak.com
217.65.40.200	PTR	web03.purepeak.com
217.65.40.252	PTR	taptica-f5-1-nj2.purepeak.com
217.65.40.252	A	balanced-clk.taptica.com
217.65.40.253	PTR	taptica-f5-2-nj2.purepeak.com
217.65.40.253	A	balanced-clk.taptica.com