Robtex

Up: 186.251.96.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 186.251.112.0/21
Down right: 186.251.120.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
186.251.112.0	PTR	dynamic-186-251-112-0.webnet.psi.br
186.251.113.187	PTR	dynamic-186-251-112-187.webnet.psi.br
186.251.113.187	A	web-186-251-113-187.webnet.psi.br
186.251.115.131	A+PTR	web-186-251-115-131.webnet.psi.br
186.251.117.136	A+PTR	web-186-251-117-136.webnet.psi.br
186.251.118.5	A+PTR	web-186-251-118-5.webnet.psi.br
186.251.120.4	A	fran.gabrimar.com.br
186.251.120.7	PTR	gabrimar.com.br
186.251.120.7	A+PTR	gabrimar.net.br
186.251.120.7	A+PTR	server1.gabrimar.com.br
186.251.120.8	PTR	admin.gabrimar.com.br
186.251.120.8	PTR	admin.gabrimar.net.br
186.251.120.9	PTR	sub1.gabrimar.com.br
186.251.120.21	PTR	router-021.gabrimar.net.br
186.251.120.21	A	zanuto2.gabrimar.com.br
186.251.120.21	A	zanuto2.gabrimar.net.br
186.251.120.25	A+PTR	rb1100.gabrimar.com.br
186.251.120.25	A+PTR	rb1100.gabrimar.net.br
186.251.120.50	PTR	router-050.gabrimar.net.br
186.251.121.229	PTR	router-1229.gabrimar.net.br
186.251.122.17	PTR	router-217.gabrimar.net.br
186.251.123.18	PTR	router-318.gabrimar.net.br
186.251.123.36	PTR	router-336.gabrimar.net.br
186.251.123.37	PTR	router-337.gabrimar.net.br
186.251.123.146	PTR	router-3146.gabrimar.net.br
186.251.123.170	PTR	router-3170.gabrimar.net.br
186.251.123.225	PTR	router-3225.gabrimar.net.br
186.251.123.225	A	ns1.moinhoglobo.com.br
186.251.123.225	A	ns1.moinhoglobo.com
186.251.123.229	A	ns2.moinhoglobo.com
186.251.123.229	A	ns2.moinhoglobo.com.br
186.251.123.239	PTR	mail.moinhoglobo.com.br
186.251.123.245	PTR	router-3245.gabrimar.net.br
186.251.124.48	A+PTR	flix-186-251-124-48.flixtelecom.net.br
186.251.127.255	PTR	255.127.251.186.pointsnet.com.br