The blacklist wiki34 lists · 3 tiers · delisting included
34 blacklists,documented.
Every DNSBL MailVitals watches — what it lists, what a listing actually costs you, and the exact steps to get removed. The monitor checks all 34 on every pass.
Tier 1 — Major blacklists
The highest impact on deliverability. A listing here can block your mail across most major providers.
01Spamhaus ZENzen.spamhaus.orgKnown spam sources, compromised/exploited hosts, and IP ranges that should not be sending unauth…→02SpamCopbl.spamcop.netIP addresses that have been reported as sources of spam by SpamCop users.→03Barracuda (BRBL)b.barracudacentral.orgIP addresses identified as sending spam or having poor email sending practices.→04Composite Blocking List (CBL)cbl.abuseat.orgIP addresses showing signs of bot/virus infections, open proxies, or other compromised behavior.→05UCEPROTECT Level 1dnsbl-1.uceprotect.netIndividual IP addresses detected sending spam or abusive email.→06UCEPROTECT Level 2dnsbl-2.uceprotect.netEntire IP allocations where multiple IPs have Level 1 listings.→07UCEPROTECT Level 3dnsbl-3.uceprotect.netEntire ISP/ASN ranges due to widespread abuse originating from that network.→
Tier 2 — Widely used
Commonly referenced by filters and ISPs. Listings here affect deliverability with many recipients.
08Passive Spam Block List (PSBL)psbl.surriel.comIP addresses that have sent email to PSBL spam traps.→09S5Hall.s5h.netIP addresses detected sending spam to S5H monitoring networks.→10SORBSdnsbl.sorbs.netSpam sources, open relays, open proxies, dynamic/residential IPs, and web exploit sources.→11SORBS Spamspam.dnsbl.sorbs.netIP addresses identified as sending spam.→12SORBS Dynamic IP Listdul.dnsbl.sorbs.netDynamic, residential, or improperly configured IP addresses sending email directly.→13SORBS New Spamnew.spam.dnsbl.sorbs.netIP addresses that have recently been detected sending spam.→14SORBS Web Exploitsweb.dnsbl.sorbs.netIP addresses running exploited web applications used for spam or phishing.→15SURBLmulti.surbl.orgDomains (not IPs) that appear in the body/URLs of spam messages.→16URIBL Multimulti.uribl.comDomains found in spam email bodies and URLs.→17URIBL Blackblack.uribl.comDomains with strong, confirmed associations with spam email content.→18Invaluementdnsbl.invaluement.comIP addresses associated with snowshoe spam operations and other sophisticated spam techniques.→19Mailspikebl.mailspike.netIP addresses with poor email sending reputation based on Mailspike's analysis.→20Mailspike Zero-Hourz.mailspike.netIP addresses involved in newly detected spam campaigns.→21DroneBLdnsbl.dronebl.orgCompromised hosts, open proxies, botnet nodes, and other abused infrastructure.→22WPBLdb.wpbl.infoIP addresses detected sending spam to WPBL monitoring traps.→23GBUdb Truncatetruncate.gbudb.netIP addresses with consistently poor sending reputation in the GBUdb system.→
Tier 3 — Additional coverage
Supplementary lists. Lower individual impact, but they matter for comprehensive monitoring.
240spam (FusionZero)0spam.fusionzero.comIP addresses identified as spam sources through trap hits and collaborative filtering.→250spambl.0spam.orgIP addresses detected sending unsolicited email.→26SpamRats SPAMspam.spamrats.comIP addresses detected sending spam to SpamRats monitoring systems.→27SpamRats NoPTRnoptr.spamrats.comIP addresses sending email without valid reverse DNS (PTR) records.→28SpamRats Authauth.spamrats.comIP addresses involved in brute-force authentication attacks against mail servers.→29Backscatterer (SpamEatingMonkey)backscatter.spameatingmonkey.netMail servers that generate backscatter (bounces for forged-sender spam).→30SpamEatingMonkeybl.spameatingmonkey.netIP addresses identified as spam sources.→31SpamEatingMonkey Netblocknetbl.spameatingmonkey.netEntire IP netblocks where multiple IPs have been identified as spam sources.→32Unsubscore (LashBack UBL)ubl.unsubscore.comIP addresses that send email to recipients who have previously unsubscribed.→33JustSpamdnsbl.justspam.orgIP addresses confirmed as spam sources.→34HostKarmahostkarma.junkemailfilter.comIP addresses with negative karma (poor sending reputation) in their scoring system.→35InterServer RBLrbl.interserver.netIP addresses detected sending spam to InterServer's network.→36DNSRBLdnsrbl.orgIP addresses identified as spam sources through aggregated data.→37Redhawkaccess.redhawk.orgIP addresses associated with spam and email abuse.→38MegaRBLrbl.megarbl.netVerified spam sources detected through traps and analysis.→39Woody's SMTP Blacklistblacklist.woody.chIP addresses sending unsolicited email detected by their monitoring systems.→40Virus RBL JPvirus.rbl.jpIP addresses detected sending virus-laden or malware-carrying email.→41imp.ch Worm RBLwormrbl.imp.chIP addresses spreading email worms and self-propagating malware.→42imp.ch Spam RBLspamrbl.imp.chIP addresses detected as spam sources.→43Kempt DNSBLdnsbl.kempt.netIP addresses involved in spam and email abuse.→44AUPADSorvedb.aupads.orgIP addresses sending spam to Australian university spam traps.→45Nether Open Relaysrelays.nether.netMail servers configured as open relays.→46Team Cymru Bogonsbogons.cymru.comIP addresses from unallocated or reserved address space (bogon addresses).→47Blocklist.debl.blocklist.deIP addresses reported for SSH brute-force, mail abuse, web attacks, and other automated attacks.→48Linköping University Spamblockall.spamblock.unit.liu.seIP addresses sending spam to their university network.→49Schulte RBLrbl.schulte.orgIP addresses detected sending spam.→50Pedantic Spamspam.pedantic.orgIP addresses identified as spam sources through strict analysis.→51Fabelbl.fabel.dkIP addresses sending spam to Danish/Nordic networks.→52SPFBLdnsbl.spfbl.netIP addresses with SPF failures or identified as spam sources.→53abuse.ch Combinedcombined.abuse.chIP addresses associated with malware distribution, botnet command & control, and other cyber thr…→54abuse.ch Dronedrone.abuse.chIP addresses identified as botnet drones (compromised systems under remote control).→55abuse.ch Spamspam.abuse.chIP addresses sending spam through botnet or automated abuse channels.→
Are you on any of them?
Check all 34 lists against your domain and sending IPs in one pass — free, no signup. If something is listed, you get the delisting path with it.