+ http://blakjak.net/RBL
+ external access disabled
+ 2023: seems dead, website is a weird error
+ https://www.blalert.com/dnsbl/rbl.blakjak.net
+ This is a private list that we do not monitor as the maintainer has explicity announced that the list is for his personal use
+ http://cyberlogic.net/
+ french (canada)
+ https://www.dnsbl.info/dnsbl-details.php?dnsbl=dnsbl.cyberlogic.net
+ On or about 5/21/2018 the cyberlogic DNSBL ceased functioning properly.
+ https://www.dnsbl.com/2018/05/
+ As reported on the mailop mailing list on Friday May 25, 2018, the blocking list at dnsbl.cyberlogic.net now contains a "wildcard" DNS entry, effectively listing the entire internet