Check an IP address against the Gnoppix RBL — real-time blocking list available on port 53 at rbl.gnoppix.org
GRBL (Gnoppix Real-time Blocking List) is a DNS-based RBL service running on rbl.gnoppix.org port 53. It allows you to check whether an IP address is listed in the Gnoppix blocking database — helping identify potentially malicious or compromised hosts.
Enter an IP address in the search field above to check whether it is listed in the Gnoppix RBL. The lookup queries rbl.gnoppix.org on port 53 and returns the current blocking status.
dig @rbl.gnoppix.org -p 53 4.3.2.1.rbl.gnoppix.org +short