Robtex

Up: 186.28.192.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 186.28.208.0/21
Down right: 186.28.216.0/21

IP	Type	Hostname
186.28.213.34	PTR	adsl186-28213034.dyn.etb.net.co
186.28.213.208	A+PTR	dynamic-186-28-213-208.dynamic.etb.net.co
186.28.218.131	PTR	adsl186-28218131.dyn.etb.net.co
186.28.222.27	A	dynamic-186-28-222-27.dynamic.etb.net.co