Robtex

Up: 177.84.72.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 177.84.72.0/23
Down right: 177.84.74.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
177.84.72.10	A	ns.espectro.com.br
177.84.72.10	A	asrv1-pr.espectro.net.br
177.84.72.10	A	mail.espectro.net.br
177.84.72.11	A	ns2.espectro.com.br
177.84.72.12	A	mail.espectro.net.br
177.84.72.19	A	ns2.espectro.com.br