Robtex

Up: 199.36.100.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 199.36.100.0/25
Down right: 199.36.100.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.36.100.1	PTR	199.36.100.1.df.iacapn.com
199.36.100.10	PTR	199.36.100.10.df.iacapn.com
199.36.100.36	PTR	199.36.100.36.df.iacapn.com
199.36.100.101	PTR	199.36.100.101.df.iacapn.com
199.36.100.101	A	www.apnstatic.com
199.36.100.101	A	apnstatic.com
199.36.100.102	A	partners.search.ask.com
199.36.100.103	PTR	199.36.100.103.df.iacapn.com
199.36.100.103	A	apnpartners.com
199.36.100.103	A	www103.apnpartners.com
199.36.100.104	PTR	199.36.100.104.df.iacapn.com
199.36.100.104	A	www.nrelate.com
199.36.100.104	A	www.apn.ask.com
199.36.100.106	PTR	199.36.100.106.df.iacapn.com
199.36.100.106	A	tbapi.ask.com
199.36.100.106	A	asksearch.ask.com
199.36.100.107	PTR	199.36.100.107.df.iacapn.com
199.36.100.107	A	toolbar.ask.com
199.36.100.107	A	dl.ask.com
199.36.100.108	PTR	199.36.100.108.df.iacapn.com
199.36.100.108	A	search.ask.com
199.36.100.108	A	safesearch.ask.com
199.36.100.112	PTR	199.36.100.112.df.iacapn.com
199.36.100.112	A	mysearch.com
199.36.100.112	A	searchthis.com
199.36.100.113	PTR	199.36.100.113.df.iacapn.com
199.36.100.113	A	mobile-api.apn.ask.com
199.36.100.113	A	apps.offercastmobile.com
199.36.100.115	PTR	199.36.100.115.df.iacapn.com
199.36.100.115	A	media.mysearchsolution.com
199.36.100.116	PTR	199.36.100.116.df.iacapn.com
199.36.100.116	A	wgt.mysearchsolution.com
199.36.100.124	PTR	199.36.100.124.df.iacapn.com
199.36.100.124	A	lss.sse-iacapps.com
199.36.100.127	A	saimg-origin.sse-iacapps.com
199.36.100.128	A	qint.sse-iacapps.com
199.36.100.187	PTR	199.36.100.187.df.iacapn.com
199.36.100.187	A	www187a.apnanalytics.com