Robtex

Up: 136.28.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 136.28.0.0/18
Down right: 136.28.64.0/18

IP	Type	Hostname
136.28.16.214	A+PTR	214.16.28.136.in-addr.arpa
136.28.16.214	A	mail.aamatreyes.com
136.28.16.214	A	aamatreyes.com
136.28.20.73	A	leads.fyi
136.28.61.62	PTR	136-28-61-62.cab.webpass.net
136.28.61.62	A	62.61.28.136.in-addr.arpa
136.28.87.23	A+PTR	23.87.28.136.in-addr.arpa