Robtex

Up: 186.193.192.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 186.193.208.0/21
Down right: 186.193.216.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
186.193.208.0	PTR	186-193-208-0.pppoe.micropic.com.br
186.193.210.72	A+PTR	186-193-210-72.pppoe.micropic.com.br
186.193.213.12	A+PTR	186-193-213-12.pppoe.micropic.com.br
186.193.213.57	A+PTR	186-193-213-57.pppoe.micropic.com.br
186.193.215.75	PTR	gateway2.hutchinsonextrema.com.br
186.193.215.75	A	mail.hutchinsonextrema.com.br
186.193.215.75	A	mx.hutchinsonextrema.com.br
186.193.215.117	PTR	186-193-215-117.static.micropic.com.br
186.193.215.117	A	fagorederlan.com.br
186.193.217.35	A+PTR	186-193-217-35.pppoe.micropic.com.br
186.193.219.34	PTR	186-193-219-34.pppoe.micropic.com.br
186.193.219.34	A	instagram.fbjp3-1.fna.fbcdn.net
186.193.221.3	A+PTR	186-193-221-3.static.micropic.com.br
186.193.221.12	PTR	cache.google.com
186.193.221.12	A	r1.sn-hpjgv2pj-22te.googlevideo.com
186.193.221.13	PTR	cache.google.com
186.193.221.13	A	r2.sn-hpjgv2pj-22te.googlevideo.com
186.193.221.75	A+PTR	186-193-221-75.static.micropic.com.br
186.193.221.107	A+PTR	186-193-221-107.static.micropic.com.br
186.193.221.114	A+PTR	186-193-221-114.static.micropic.com.br
186.193.221.178	PTR	186-193-221-178.pppoe.micropic.com.br
186.193.221.178	A	rebellionl2.com
186.193.221.178	A	openwifi.net.br
186.193.221.243	PTR	ns1.fagorederlan.com.br
186.193.221.243	A	ns2.openwifi.com.br
186.193.221.243	A	ns2.rebellionl2.com
186.193.221.244	PTR	ns3.fagorederlan.com.br
186.193.221.245	PTR	mx.fagorederlan.com.br
186.193.221.246	A+PTR	minie.fagorederlan.com.br
186.193.222.0	PTR	186-193-222-0.pppoe.micropic.com.br
186.193.223.67	A+PTR	186-193-223-67.pppoe.micropic.com.br
186.193.223.255	PTR	186-193-223-255.pppoe.micropic.com.br