domain is for sale
http://rbl.dns-servicios.com/rbl.php
website can not be found
+ http://spamcannibal.org/
+ dead, as of at least 2018
00_NEEDS_RECHECK
https://antispam.imp.ch/
no usage policy
usage policy not explicit but seems to be free
listing policy also not explicit but can be inferred from return code explanation
return codes are explained
- http://spamcannibal.org/dnsbl_check.shtml
http://spamrats.com/
http://spamstinks.com/
http://st.technovision.dk/