Robtex

Up: 177.86.136.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 177.86.138.0/24
Down right: 177.86.139.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
177.86.138.0	A	0-138-86-177.g5telecom.com.br
177.86.139.0	A	0-139-86-177.g5telecom.com.br
177.86.139.2	A+PTR	ns1.g5telecom.com.br
177.86.139.2	A	net.g5telecom.com.br
177.86.139.2	A	g5telecom.com.br
177.86.139.3	PTR	ns2.g5telecom.com.br