Robtex

Up: 187.63.72.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 187.63.74.0/24
Down right: 187.63.75.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
187.63.74.15	PTR	reverso1.gigaline.com.br
187.63.74.15	A	ns1.trabalhodecasa.com.br
187.63.74.15	A	mailserver.alldrivers.com.br
187.63.74.16	PTR	reverso2.gigaline.com.br
187.63.74.16	A	trabalhodecasa.com.br
187.63.74.16	A	ns2.gigaline.com.br
187.63.74.20	PTR	187-63-74-20.static.gigaline.com.br
187.63.74.20	A	ns2.trabalhodecasa.com.br
187.63.74.20	A	ns2.itaservice.com.br
187.63.74.45	A	sauderiodasostras.net
187.63.74.94	A	mail.brastec-group.com
187.63.74.242	PTR	187-63-74-242.static.gigaline.com.br
187.63.75.130	PTR	ip130.gigaline.com.br.75.63.187.in-addr.arpa
187.63.75.200	PTR	187-63-75-200.static.gigaline.com.br