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
+ http://www.rbl.jp/allrbl-e.html
+ website asks for login or just errors
00_NEEDS_RECHECK
https://antispam.imp.ch/
no usage policy
usage policy is relatively clear that it’s free, except maybe for big for-profit oranizations
listing policy is documented
return codes are documented
- http://www.rbl.jp/allrbl-e.html
http://www.sorbs.net/
good reputation
seems sensible