Here is a list of WHM real-time block lists. This list was obtain when ConfigServer Firewall started producing lots of errors.
Please note the list might not be exhaustive but should give you a good idea when battling to get yourself delisted:
- all.s5h.net
- b.barracudacentral.org
- cbl.abuseat.org
- csi.cloudmark.com
- db.wpbl.info
- dnsbl-1.uceprotect.net
- dnsbl-2.uceprotect.net
- dnsbl-3.uceprotect.net
- dnsbl.dronebl.org
- dnsbl.inps.de
- dnsbl.sorbs.net
- drone.abuse.ch
- dul.dnsbl.sorbs.net
- dyna.spamrats.com
- http.dnsbl.sorbs.net
- httpbl.abuse.ch
- ips.backscatterer.org
- ix.dnsbl.manitu.net
- misc.dnsbl.sorbs.net
- multi.surbl.org
- noptr.spamrats.com
- opm.tornevall.org
- pbl.spamhaus.org
- psbl.surriel.com
- query.senderbase.org
- rbl.efnetrbl.org
- rbl.interserver.net
- sbl.spamhaus.org
- smtp.dnsbl.sorbs.net
- socks.dnsbl.sorbs.net
- spam.dnsbl.sorbs.net
- spam.spamrats.com
- spamrbl.imp.ch
- tor.dan.me.uk
- ubl.unsubscore.com
- virbl.bit.nl
- web.dnsbl.sorbs.net
- wormrbl.imp.ch
- xbl.spamhaus.org
- zen.spamhaus.org
- zombie.dnsbl.sorbs.net