Robtex

Up: 191.253.32.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 191.253.40.0/22
Down right: 191.253.44.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
191.253.40.5	A+PTR	rose.serrageral.net.br
191.253.40.5	A	ns1.dnsr2.serrageral.net.br
191.253.40.5	A	dnsr2.serrageral.net.br
191.253.40.6	PTR	fiber01.serrageral.net.br
191.253.41.6	A	mail.serrageral.net.br
191.253.41.10	A+PTR	host10-41-rf.serrageral.net.br
191.253.41.10	A	ns2.serrageral.net.br
191.253.41.24	PTR	host24-41-rf.serrageral.net.br
191.253.41.28	PTR	host28-41-rf.serrageral.net.br
191.253.41.72	A+PTR	host72-41-rf.serrageral.net.br
191.253.41.111	A	i-gj1o3grns.godscarpenter.org
191.253.41.183	PTR	host183-41-rf.serrageral.net.br
191.253.42.121	PTR	host121-42-rf.serrageral.net.br
191.253.42.121	A	scowlero.jersicats.com
191.253.42.139	PTR	host139-42-rf.serrageral.net.br
191.253.42.220	PTR	host220-42-rf.serrageral.net.br
191.253.43.31	A+PTR	host31-43-rf.serrageral.net.br
191.253.43.67	PTR	host67-43-rf.serrageral.net.br
191.253.43.74	PTR	host74-43-rf.serrageral.net.br
191.253.43.111	PTR	host111-43-rf.serrageral.net.br
191.253.45.254	PTR	host254-45-rf.serrageral.net.br
191.253.47.90	PTR	host90-47-rf.serrageral.net.br
191.253.47.90	A	ns1.cloudsoftcam.com.br
191.253.47.90	A	cloudsoftcam.com.br
191.253.47.101	PTR	host101-47-rf.serrageral.net.br
191.253.47.120	PTR	host120-47-rf.serrageral.net.br
191.253.47.154	PTR	host154-47-rf.serrageral.net.br
191.253.47.154	A	bauhaus-pescaria-brava-sc.ddns.me
191.253.47.227	PTR	host227-47-rf.serrageral.net.br
191.253.47.227	A	suportegigabyte.com