Robtex

Up: 177.84.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 177.84.40.0/23
Down right: 177.84.42.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
177.84.40.147	PTR	pe-bernardo-go-177.84.40.147.linenet.com.br
177.84.40.158	PTR	pe-bernardo-go-177.84.40.158.linenet.com.br
177.84.40.158	A	pe-bernardo-go-177-84-40-158.linenet.com.br
177.84.40.252	PTR	dynamic-177-84-40-252.linenet.net.br
177.84.41.30	PTR	pe-bernardo-go-177.84.41.30.linenet.com.br
177.84.41.30	A	dynamic-177-84-41-30.linenet.net.br
177.84.41.110	PTR	dynamic-177-84-41-110.linenet.net.br
177.84.41.235	PTR	pe-bernardo-go-177-84-41-235.linenet.com.br
177.84.42.1	PTR	dynamic-177-84-42-1.linenet.net.br
177.84.42.1	A	svderp.com
177.84.42.132	A	dynamic-177-84-42-132.linenet.net.br
177.84.42.176	A	dynamic-177-84-42-176.linenet.net.br
177.84.42.248	A	dynamic-177-84-42-248.linenet.net.br
177.84.43.1	PTR	static-177-84-43-1.linenet.net.br
177.84.43.1	A	www.svderp.com
177.84.43.1	A	dynamic-177-84-43-1.linenet.net.br
177.84.43.2	PTR	static-177-84-43-2.linenet.net.br
177.84.43.2	A	svderp.com
177.84.43.2	A	mail.douglasroyer.net
177.84.43.52	PTR	static-177-84-43-52.linenet.net.br
177.84.43.242	PTR	pe-bernardo-go-177.84.43.242.linenet.com.br
177.84.43.242	A	concentrador-pppoe-pebernardo.linenet.net.br
177.84.43.244	PTR	pe-bernardo-go-177.84.43.244.linenet.com.br
177.84.43.244	A	speedtest.linenet.com.br
177.84.43.244	A	linenet.net.br
177.84.43.245	PTR	ns2.linenet.net.br
177.84.43.253	A	mail.linenet.net.br
177.84.43.253	A	mail.linenet.com.br
177.84.43.253	A	linenettelecom.net.br