Blacklist Monitor

Welcome to our Blacklist Performance Monitoring, tracking more than 40 blacklists.

Blacklists, also known as RBL, DNSBL or URIBL, help administrators to block messages from specific IP's which have a history of sending spam. They can be used by software like SpamAssassin to reject or flag unwanted messages. Most public blacklists have their own standards and criteria for listing spammers. Hence, results can vary greatly from one to the other.

Latest News

2025-02-27

We thank the Nixspam team for their service and have removed the defunct lists.
» More news

Blacklists performance from 2025-09-22 till 2025-09-28

Below are weekly statistics of accuracy and failure rates for specific blacklists:

Name Type Accuracy Inaccuracy
DCC CHECK 68.13% 4.38%
UCEPROTECT 2 DNSBL 64.81% 0%
SURBL COMBINED URIBL 61.58% 0%
SURBL ABUSE URIBL 53.76% 0%
DNSWL MEDIUM DNSWL 51.94% 0%
MAILSPIKE BL DNSBL 51.03% 0%
GBUDB.COM TRUNCATE DNSBL 49.76% 0%
SPAMHAUS ZEN DNSBL 48.58% 0%
SPAMCOP DNSBL 46.53% 0.03%
UCEPROTECT 3 DNSBL 43.11% 0%
SPAMHAUS DBL URIBL 42.72% 0%
SPAMRATS ALL DNSBL 41.74% 0%
JMF-BLACK DNSBL 36.07% 0.03%
UCEPROTECT 1 DNSBL 33.72% 0%
SURBL PHISHING URIBL 32.06% 0%
SPAMHAUS PBL DNSBL 30.6% 0%
PSBL SURRIEL DNSBL 30.01% 0%
COMPOSITE BLOCKING LIST DNSBL 22.68% 0%
SPAMHAUS XBL DNSBL 22.68% 0%
SPAMRATS SPAM DNSBL 20.33% 0%
URIBL BLACKLIST URIBL 20.33% 0%
SPAM EATING MONKEY - BLACK DNSBL 18.48% 0%
SPAMRATS NOPTR DNSBL 12.41% 0%
SPAMRATS DYNA DNSBL 10.36% 0%
SPAM EATING MONKEY - URI FRESH 15 URIBL 7.04% 0%
SPAM EATING MONKEY - URI RED URIBL 4.69% 0.37%
SPAM EATING MONKEY - URI FRESH 10 URIBL 3.91% 0%
DRONEBL DNSBL 3.32% 0.03%
JIPPG DNSBL 3.13% 0%
SPAM EATING MONKEY - URI BLACK URIBL 2.93% 0.37%
MAILSPIKE WL DNSWL 2.92% 2.05%
SPAM EATING MONKEY - URI FRESH URIBL 2.64% 0%
DNSWL NONE DNSWL 2.47% 3.32%
JMF-WHITE DNSWL 0.84% 0.39%
SPAMHAUS SBL URIBL 0.59% 0%
DNSWL LOW DNSWL 0.08% 0%
CBLCN PLUS DNSBL 0% 0%
SURBL CRACKED SITES URIBL 0% 0%
SURBL MALWARE URIBL 0% 0%
SWINOG URIBL URIBL 0% 0%
IMP SPAMLIST DNSBL 0% 0%
UNSUBSCRIBE BLACKLIST DNSBL 0% 0%
DNSWL HIGH DNSWL 0% 0%
WPBL DNSBL 0% 0%
SWINOG DNSRBL DNSBL 0% 0%

View the data processing guide to learn more.