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 2025-04-21 till 2025-04-27

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

Name Type Accuracy Inaccuracy
DCC CHECK 65.49% 6.87%
DNSWL MEDIUM DNSWL 64.06% 0%
SPAMRATS ALL DNSBL 51.76% 0%
SURBL COMBINED URIBL 47.65% 0%
SPAMHAUS ZEN DNSBL 44.25% 0%
UCEPROTECT 2 DNSBL 42.72% 0.03%
GBUDB.COM TRUNCATE DNSBL 40.49% 0%
SURBL ABUSE URIBL 37.68% 0%
SPAMHAUS DBL URIBL 36.15% 0%
URIBL BLACKLIST URIBL 35.09% 0.11%
UCEPROTECT 3 DNSBL 34.98% 0%
UCEPROTECT 1 DNSBL 29.81% 0%
SPAMHAUS PBL DNSBL 29.81% 0%
MAILSPIKE BL DNSBL 27.11% 0%
SPAMRATS SPAM DNSBL 26.53% 0%
SPAMCOP DNSBL 25.82% 0%
SURBL PHISHING URIBL 24.53% 0%
JMF-BLACK DNSBL 23.71% 0%
COMPOSITE BLOCKING LIST DNSBL 22.42% 0%
SPAMHAUS XBL DNSBL 22.42% 0%
PSBL SURRIEL DNSBL 21.95% 0%
SPAMRATS NOPTR DNSBL 13.73% 0%
SPAMRATS DYNA DNSBL 13.15% 0%
SPAM EATING MONKEY - BLACK DNSBL 9.39% 0%
SPAM EATING MONKEY - URI RED URIBL 6.92% 0%
JIPPG DNSBL 5.16% 0%
SPAM EATING MONKEY - URI FRESH 15 URIBL 4.58% 0%
SPAM EATING MONKEY - URI FRESH 10 URIBL 4.46% 0%
SPAM EATING MONKEY - URI FRESH URIBL 4.23% 0%
SPAM EATING MONKEY - URI BLACK URIBL 3.64% 0%
DRONEBL DNSBL 1.64% 0%
DNSWL NONE DNSWL 0.63% 2.93%
MAILSPIKE WL DNSWL 0.45% 2%
DNSWL HIGH DNSWL 0.16% 0%
DNSWL LOW DNSWL 0.11% 0%
JMF-WHITE DNSWL 0.05% 0.35%
CBLCN PLUS DNSBL 0% 0%
UNSUBSCRIBE BLACKLIST DNSBL 0% 0%
SURBL CRACKED SITES URIBL 0% 0%
SPAMHAUS SBL URIBL 0% 0%
WPBL DNSBL 0% 0%
SWINOG DNSRBL DNSBL 0% 0%
SWINOG URIBL URIBL 0% 0%
SURBL MALWARE URIBL 0% 0%
IMP SPAMLIST DNSBL 0% 0%

View the data processing guide to learn more.