website can not be found
http://spamcannibal.org/
dead, as of at least 2018
+ http://st.technovision.dk/
+ https://docs.hetrixtools.com/st-technovision-dk-inactive-removed/
+ [December 8, 2021] This RBL has stopped responding to DNS queries.
+ http://spamstinks.com/
+ cert is for generic hostname
+ website shows some login form
00_NEEDS_RECHECK
https://antispam.imp.ch/
no usage policy
listing policy also not explicit but can be inferred from return code explanation
return codes are explained
http://spamrats.com/
- http://spamstinks.com/
- http://st.technovision.dk/
+ clear usage policy (ToS)
+ listing policies documented
+ return codes of aggregated list documented
+ lists IPs
http://tor.efnet.org/
http://rbl.efnetrbl.org/ MIRROR
http://v4bl.org/