Here’s a complete list of blacklists (RBL) which we monitor on our platform.

IPv4 RBLs:

0spam.fusionzero.com
access.redhawk.org
all.rbl.jp
all.s5h.net
all.spamrats.com
aspews.ext.sorbs.net
b.barracudacentral.org
babl.rbl.webiron.net
backscatter.spameatingmonkey.net
bb.barracudacentral.org
bl.blocklist.de
bl.drmx.org
bl.konstant.no
bl.mailspike.net
bl.nosolicitado.org
bl.nszones.com
bl.rbl.scrolloutf1.com
bl.scientificspam.net
bl.score.senderscore.com
bl.spamcannibal.org
bl.spamcop.net
bl.spameatingmonkey.net
bl.suomispam.net
black.junkemailfilter.com
block.dnsbl.sorbs.net
bsb.empty.us
cart00ney.surriel.com
cbl.abuseat.org
cbl.anti-spam.org.cn
cblless.anti-spam.org.cn
cblplus.anti-spam.org.cn
cdl.anti-spam.org.cn
combined.rbl.msrbl.net
db.wpbl.info
dnsbl-1.uceprotect.net
dnsbl-2.uceprotect.net
dnsbl-3.uceprotect.net
dnsbl.cobion.com
dnsbl.dronebl.org
dnsbl.inps.de
dnsbl.justspam.org
dnsbl.kempt.net
dnsbl.net.ua
dnsbl.rv-soft.info
dnsbl.rymsho.ru
dnsbl.sorbs.net
dnsbl.tornevall.org
dnsbl.zapbl.net
dnsrbl.org
dnsrbl.swinog.ch
dul.dnsbl.sorbs.net
dyn.nszones.com
dyna.spamrats.com
escalations.dnsbl.sorbs.net
exitnodes.tor.dnsbl.sectoor.de
fnrbl.fast.net
hostkarma.junkemailfilter.com
http.dnsbl.sorbs.net
images.rbl.msrbl.net
invaluement sip
invaluement sip/24
ips.backscatterer.org
ix.dnsbl.manitu.net
korea.services.net
l1.bbfh.ext.sorbs.net
l2.bbfh.ext.sorbs.net
l4.bbfh.ext.sorbs.net
list.bbfh.org
mail-abuse.blacklist.jippg.org
misc.dnsbl.sorbs.net
multi.surbl.org
netscan.rbl.blockedservers.com
new.spam.dnsbl.sorbs.net
noptr.spamrats.com
old.spam.dnsbl.sorbs.net
pbl.spamhaus.org
phishing.rbl.msrbl.net
pofon.foobar.hu
problems.dnsbl.sorbs.net
proxies.dnsbl.sorbs.net
psbl.surriel.com
rbl.abuse.ro
rbl.blockedservers.com
rbl.dns-servicios.com
rbl.efnet.org
rbl.efnetrbl.org
rbl.iprange.net
rbl.megarbl.net
rbl2.triumf.ca
recent.spam.dnsbl.sorbs.net
relays.dnsbl.sorbs.net
rep.mailspike.net
safe.dnsbl.sorbs.net
sbl.spamhaus.org
short.rbl.jp
smtp.dnsbl.sorbs.net
socks.dnsbl.sorbs.net
spam.dnsbl.anonmails.de
spam.dnsbl.sorbs.net
spam.pedantic.org
spam.rbl.blockedservers.com
spam.rbl.msrbl.net
spam.spamrats.com
spamlist.or.kr
spamrbl.imp.ch
spamsources.fabel.dk
srn.surgate.net
st.technovision.dk
stabl.rbl.webiron.net
talosintelligence.com
tor.dnsbl.sectoor.de
torexit.dan.me.uk
truncate.gbudb.net
ubl.unsubscore.com
virus.rbl.msrbl.net
web.dnsbl.sorbs.net
web.rbl.msrbl.net
xbl.spamhaus.org
z.mailspike.net
zen.spamhaus.org
zombie.dnsbl.sorbs.net

Domain/Hostname RBLs:

0spamurl.fusionzero.com
abuse.rfc-clueless.org
badconf.rhsbl.sorbs.net
bl.fmb.la
bl.rbl.scrolloutf1.com
black.uribl.com
blacklist.netcore.co.in
bogusmx.rfc-clueless.org
bsb.empty.us
bsb.spamlookup.net
communicado.fmb.la
dbl.spamhaus.org
dbl.tiopan.com
dnsbl.othello.ch
dob.sibl.support-intelligence.net
dsn.rfc-clueless.org
dyndns.rbl.jp
elitist.rfc-clueless.org
fresh.spameatingmonkey.net
fresh10.spameatingmonkey.net
fresh15.spameatingmonkey.net
fulldom.rfc-clueless.org
grey.uribl.com
hostkarma.junkemailfilter.com
invaluement uri
multi.surbl.org
multi.uribl.com
nomail.rhsbl.sorbs.net
nsbl.fmb.la
postmaster.rfc-clueless.org
public.sarbl.org
red.uribl.com
rhsbl.rymsho.ru
rhsbl.scientificspam.net
rhsbl.sorbs.net
rhsbl.zapbl.net
short.fmb.la
ubl.nszones.com
uribl.abuse.ro
uribl.pofon.foobar.hu
uribl.spameatingmonkey.net
uribl.swinog.ch
uribl.zeustracker.abuse.ch
urired.spameatingmonkey.net
url.rbl.jp
whois.rfc-clueless.org

This list is subject to change. We do not keep this post constantly up to date.
If you need an absolutely up to date list, be sure to run a Blacklist Check on our website. The results will show all of the currently monitored blacklists.