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
+ http://www.spamhauswhitelist.com/en/
+ looks like a parked domain with ads
00_NEEDS_RECHECK
https://antispam.imp.ch/
no usage policy
return codes are explained
http://rfc-clueless.org/
usage policy is not so clear but the FAQ implies that it’s just free to use for everyone
+ many timeouts
+ first noticed in 2014 and deactivated
+ retried in 2023 and still the case
http://spameatingmonkey.com/
lists IPs
that sent backscatter
return codes are documented
seems well done
https://rbl.foobar.hu/
+ lists domains/URIs
+ lists IPs
+ listing policy seems clear
+ usage policy seems clearly free for everyone
+ return codes are documented
+ possibly unmaintained or dead
+ footer says: ©2013-14
http://apews.org/?page=filter
questionable
- http://www.spamhauswhitelist.com/en/
+ https://www.dnsbl.com/search/label/apews
+ https://whatismyipaddress.com/apews
+ dead?
+ no news on http://apews-user.blogspot.com/ since 2014
+ not further looked into because of the above
https://www.dnswl.org/
+ seems to be run with best intentions but has had issues from what I have heard from some users
+ IRC channel has some activity
+ usage policy relatively clear
+ free within certain limits
+ listing policy
+ self-service
+ return codes are documented
00_E_FOCUS
http://stopspam.org/rblcheck/index.php
different kinds of lists