RBLs are lists of IP addresses of known and potential spam senders. You can check any IP - address or domain for presence in spam lists.

Server Status
combined.abuse.ch -
drone.abuse.ch -
spam.abuse.ch -
cbl.abuseat.org -
duinv.aupads.org -
orvedb.aupads.org -
ips.backscatterer.org -
b.barracudacentral.org -
proxy.bl.gweep.ca -
relays.bl.gweep.ca -
relays.bl.kundenserver.de -
proxy.block.transip.nl -
residential.block.transip.nl -
bl.deadbeef.com -
ohps.dnsbl.net.au -
omrs.dnsbl.net.au -
osps.dnsbl.net.au -
osrs.dnsbl.net.au -
owfs.dnsbl.net.au -
owps.dnsbl.net.au -
probes.dnsbl.net.au -
rdts.dnsbl.net.au -
ricn.dnsbl.net.au -
rmst.dnsbl.net.au -
t3direct.dnsbl.net.au -
tor.dnsbl.sectoor.de -
spamrbl.imp.ch -
wormrbl.imp.ch -
rbl.interserver.net -
ubl.lashback.com -
relays.nether.net -
spamlist.or.kr -
short.rbl.jp -
virus.rbl.jp -
combined.rbl.msrbl.net -
images.rbl.msrbl.net -
phishing.rbl.msrbl.net -
spam.rbl.msrbl.net -
virus.rbl.msrbl.net -
dynip.rothen.com -
korea.services.net -
bl.spamcop.net -
pbl.spamhaus.org -
sbl.spamhaus.org -
xbl.spamhaus.org -
zen.spamhaus.org -
dyna.spamrats.com -
noptr.spamrats.com -
spam.spamrats.com -
psbl.surriel.com -
torserver.tor.dnsbl.sectoor.de -
dnsbl-1.uceprotect.net -
ubl.unsubscore.com -
blacklist.woody.ch -