Robtex

Up: 18.231.128.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 18.231.192.0/19
Down right: 18.231.224.0/19
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
18.231.192.4	A+PTR	ec2-18-231-192-4.sa-east-1.compute.amazonaws.com
18.231.192.4	A	www.devbay.com.br
18.231.192.4	A	devbay.com.br
18.231.192.35	A+PTR	ec2-18-231-192-35.sa-east-1.compute.amazonaws.com
18.231.192.48	PTR	ec2-18-231-192-48.sa-east-1.compute.amazonaws.com
18.231.192.58	PTR	ec2-18-231-192-58.sa-east-1.compute.amazonaws.com
18.231.192.81	A+PTR	ec2-18-231-192-81.sa-east-1.compute.amazonaws.com
18.231.192.107	A+PTR	ec2-18-231-192-107.sa-east-1.compute.amazonaws.com
18.231.192.107	A	brasilagostoinstituto.com
18.231.192.173	A+PTR	ec2-18-231-192-173.sa-east-1.compute.amazonaws.com
18.231.192.173	A	www.jmterra.com.br
18.231.192.178	A+PTR	ec2-18-231-192-178.sa-east-1.compute.amazonaws.com
18.231.192.178	A	eco-fintech.com
18.231.192.189	PTR	ec2-18-231-192-189.sa-east-1.compute.amazonaws.com
18.231.193.4	A+PTR	ec2-18-231-193-4.sa-east-1.compute.amazonaws.com
18.231.193.4	A	atualizarid.com
18.231.193.33	A+PTR	ec2-18-231-193-33.sa-east-1.compute.amazonaws.com
18.231.193.33	A	connecthub.com.br
18.231.193.38	PTR	ec2-18-231-193-38.sa-east-1.compute.amazonaws.com
18.231.193.93	A+PTR	ec2-18-231-193-93.sa-east-1.compute.amazonaws.com
18.231.193.93	A	sbnboletin.com
18.231.193.143	A+PTR	ec2-18-231-193-143.sa-east-1.compute.amazonaws.com
18.231.193.143	A	extremelyatrocities.com
18.231.193.165	A+PTR	ec2-18-231-193-165.sa-east-1.compute.amazonaws.com
18.231.193.165	A	the300.com.br
18.231.193.241	A+PTR	ec2-18-231-193-241.sa-east-1.compute.amazonaws.com
18.231.194.74	A	parceiros.gsurfnet.com
18.231.194.81	A	m3.gsurfnet.com
18.231.194.81	A	msp2.gsurfnet.com
18.231.194.93	A+PTR	93-194-231-18.gsurfnet.com.br
18.231.194.113	A	m3.gsurfnet.com
18.231.194.113	A	msp2.gsurfnet.com
18.231.195.22	A+PTR	ec2-18-231-195-22.sa-east-1.compute.amazonaws.com
18.231.195.22	A	makingsmartphones.com
18.231.195.134	A+PTR	ec2-18-231-195-134.sa-east-1.compute.amazonaws.com
18.231.195.186	A+PTR	ec2-18-231-195-186.sa-east-1.compute.amazonaws.com
18.231.197.11	A+PTR	ec2-18-231-197-11.sa-east-1.compute.amazonaws.com
18.231.197.47	A+PTR	ec2-18-231-197-47.sa-east-1.compute.amazonaws.com
18.231.197.47	A	www.dediez.com
18.231.197.60	PTR	ec2-18-231-197-60.sa-east-1.compute.amazonaws.com
18.231.197.60	A	whatsapp-editor.com
18.231.197.82	A+PTR	ec2-18-231-197-82.sa-east-1.compute.amazonaws.com
18.231.197.96	A+PTR	ec2-18-231-197-96.sa-east-1.compute.amazonaws.com
18.231.197.96	A	lubrific.com.br
18.231.197.109	A+PTR	ec2-18-231-197-109.sa-east-1.compute.amazonaws.com
18.231.197.121	PTR	ec2-18-231-197-121.sa-east-1.compute.amazonaws.com
18.231.197.180	A+PTR	ec2-18-231-197-180.sa-east-1.compute.amazonaws.com
18.231.197.180	A	zarabarbosa.com
18.231.197.180	A	marinomena.com
18.231.197.194	A+PTR	ec2-18-231-197-194.sa-east-1.compute.amazonaws.com
18.231.197.215	A+PTR	ec2-18-231-197-215.sa-east-1.compute.amazonaws.com
18.231.197.235	A+PTR	ec2-18-231-197-235.sa-east-1.compute.amazonaws.com
18.231.197.235	A	www.ingressosmarchand.com.br
18.231.198.1	A+PTR	ec2-18-231-198-1.sa-east-1.compute.amazonaws.com
18.231.198.1	A	www.convocatorias.com.ar
18.231.198.26	A	melissa-br.com
18.231.198.31	A+PTR	ec2-18-231-198-31.sa-east-1.compute.amazonaws.com
18.231.198.52	PTR	ec2-18-231-198-52.sa-east-1.compute.amazonaws.com
18.231.198.75	A+PTR	ec2-18-231-198-75.sa-east-1.compute.amazonaws.com
18.231.198.75	A	saraeventos.com.br
18.231.198.152	A	lapasoft.com
18.231.198.173	A+PTR	ec2-18-231-198-173.sa-east-1.compute.amazonaws.com
18.231.198.173	A	analisetelefonica.com.br
18.231.198.173	A	www.analisetelefonica.com.br
18.231.198.175	PTR	ec2-18-231-198-175.sa-east-1.compute.amazonaws.com
18.231.198.250	A+PTR	ec2-18-231-198-250.sa-east-1.compute.amazonaws.com
18.231.198.250	A	mx.tti.inf.br
18.231.198.250	A	mx.mktech-digital.com
18.231.224.70	A+PTR	ec2-18-231-224-70.sa-east-1.compute.amazonaws.com
18.231.224.94	A	br-pricewat.csqua9fmcp.gw.gpcloudservice.com
18.231.224.153	A+PTR	ec2-18-231-224-153.sa-east-1.compute.amazonaws.com
18.231.224.209	A+PTR	ec2-18-231-224-209.sa-east-1.compute.amazonaws.com