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

2025-10-21

Removed the no longer operational WPBL and CBLCN lists
» More news

Blacklists performance from 2026-04-27 till 2026-05-03

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

Name Type Accuracy Inaccuracy
DCC CHECK 82.69% 11.12%
SPAMHAUS ZEN DNSBL 64.89% 0%
GBUDB.COM TRUNCATE DNSBL 47.87% 0%
SPAMRATS ALL DNSBL 42.65% 0%
MAILSPIKE BL DNSBL 39.85% 0%
UCEPROTECT 3 DNSBL 39.65% 4.65%
COMPOSITE BLOCKING LIST DNSBL 39.36% 0%
SPAMHAUS XBL DNSBL 39.36% 0%
SPAMCOP DNSBL 39.07% 0%
UCEPROTECT 2 DNSBL 35.69% 3.06%
SURBL COMBINED URIBL 35.69% 0.04%
JMF-BLACK DNSBL 34.82% 0.04%
SURBL ABUSE URIBL 33.95% 0.04%
URIBL BLACKLIST URIBL 32.98% 0.16%
SPAMHAUS DBL URIBL 28.24% 0.07%
UCEPROTECT 1 DNSBL 26.5% 0%
SPAMHAUS PBL DNSBL 22.05% 0%
SPAMRATS NOPTR DNSBL 21.76% 0%
PSBL SURRIEL DNSBL 16.83% 0%
SPAM EATING MONKEY - URI RED URIBL 16.15% 0.69%
SPAM EATING MONKEY - URI BLACK URIBL 15.67% 0.64%
SPAM EATING MONKEY - BLACK DNSBL 13.44% 0%
SPAMRATS SPAM DNSBL 12.86% 0%
SURBL PHISHING URIBL 12.09% 0%
DRONEBL DNSBL 11.9% 0.33%
JIPPG DNSBL 10.44% 0%
SPAMRATS DYNA DNSBL 8.41% 0%
MAILSPIKE WL DNSWL 4.89% 1.74%
DNSWL MEDIUM DNSWL 3.65% 0.1%
SPAM EATING MONKEY - URI FRESH 15 URIBL 3.58% 0.07%
SPAM EATING MONKEY - URI FRESH 10 URIBL 3.48% 0.07%
SPAM EATING MONKEY - URI FRESH URIBL 3.48% 0.04%
JMF-WHITE DNSWL 2.06% 0.39%
DNSWL NONE DNSWL 0.95% 2.61%
SPAMHAUS SBL URIBL 0.87% 0.04%
DNSWL LOW DNSWL 0.35% 0%
DNSWL HIGH DNSWL 0.24% 0%
IMP SPAMLIST DNSBL 0% 0%
SURBL CRACKED SITES URIBL 0% 0%
SWINOG URIBL URIBL 0% 0%
SWINOG DNSRBL DNSBL 0% 0%
SURBL MALWARE URIBL 0% 0%
UNSUBSCRIBE BLACKLIST DNSBL 0% 0%

View the data processing guide to learn more.