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 2025-06-09 till 2025-06-15

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

Name Type Accuracy Inaccuracy
DCC CHECK 74.71% 4.75%
DNSWL MEDIUM DNSWL 72.48% 0.11%
SURBL COMBINED URIBL 52.39% 0%
SPAMRATS ALL DNSBL 48.99% 0%
SPAMHAUS ZEN DNSBL 46.12% 0%
UCEPROTECT 3 DNSBL 45.06% 0.08%
SURBL ABUSE URIBL 44.42% 0%
UCEPROTECT 2 DNSBL 42.93% 0.38%
MAILSPIKE BL DNSBL 40.38% 0%
UCEPROTECT 1 DNSBL 39.96% 0%
PSBL SURRIEL DNSBL 36.45% 0%
GBUDB.COM TRUNCATE DNSBL 35.81% 0%
SPAMCOP DNSBL 33.16% 0%
SPAMRATS SPAM DNSBL 31.35% 0%
URIBL BLACKLIST URIBL 30.92% 0.54%
SPAMHAUS DBL URIBL 30.61% 0.05%
JMF-BLACK DNSBL 29.86% 0.03%
SPAMHAUS PBL DNSBL 29.12% 0%
COMPOSITE BLOCKING LIST DNSBL 24.23% 0%
SPAMHAUS XBL DNSBL 24.23% 0%
SURBL PHISHING URIBL 14.77% 0%
SPAM EATING MONKEY - BLACK DNSBL 12.86% 0%
SPAMRATS DYNA DNSBL 10.73% 0%
SPAMRATS NOPTR DNSBL 8.18% 0%
SPAM EATING MONKEY - URI RED URIBL 7.55% 0%
JIPPG DNSBL 5.63% 0%
SPAM EATING MONKEY - URI FRESH URIBL 4.57% 0%
SPAM EATING MONKEY - URI FRESH 10 URIBL 4.57% 0%
SPAM EATING MONKEY - URI FRESH 15 URIBL 4.57% 0%
DRONEBL DNSBL 3.93% 0.05%
SPAM EATING MONKEY - URI BLACK URIBL 3.08% 0%
MAILSPIKE WL DNSWL 1.95% 1.06%
DNSWL NONE DNSWL 0.62% 2.66%
SPAMHAUS SBL URIBL 0.53% 0.03%
DNSWL HIGH DNSWL 0.35% 0%
JMF-WHITE DNSWL 0.11% 0.32%
DNSWL LOW DNSWL 0.03% 0%
CBLCN PLUS DNSBL 0% 0%
UNSUBSCRIBE BLACKLIST DNSBL 0% 0%
SWINOG DNSRBL DNSBL 0% 0%
SURBL CRACKED SITES URIBL 0% 0%
SWINOG URIBL URIBL 0% 0%
WPBL DNSBL 0% 0%
IMP SPAMLIST DNSBL 0% 0%
SURBL MALWARE URIBL 0% 0%

View the data processing guide to learn more.