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 2025-04-14 till 2025-04-20

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

Name Type Accuracy Inaccuracy
DNSWL MEDIUM DNSWL 75.96% 0.6%
DCC CHECK 67.02% 4.38%
SURBL COMBINED URIBL 52.86% 0.03%
SPAMRATS ALL DNSBL 48.34% 0%
SURBL ABUSE URIBL 44.58% 0.03%
UCEPROTECT 2 DNSBL 42.17% 0.14%
SPAMHAUS DBL URIBL 41.87% 0.17%
SPAMHAUS ZEN DNSBL 40.21% 0%
GBUDB.COM TRUNCATE DNSBL 38.25% 0%
UCEPROTECT 3 DNSBL 34.64% 0.06%
JMF-BLACK DNSBL 32.68% 0.03%
MAILSPIKE BL DNSBL 30.27% 0%
URIBL BLACKLIST URIBL 28.61% 0.06%
SPAMHAUS PBL DNSBL 28.01% 0%
SPAMCOP DNSBL 27.86% 0%
UCEPROTECT 1 DNSBL 27.71% 0%
PSBL SURRIEL DNSBL 27.11% 0.03%
COMPOSITE BLOCKING LIST DNSBL 25.15% 0%
SPAMHAUS XBL DNSBL 25.15% 0%
SPAMRATS SPAM DNSBL 25% 0%
SURBL PHISHING URIBL 17.32% 0%
SPAM EATING MONKEY - BLACK DNSBL 12.95% 0%
SPAMRATS NOPTR DNSBL 12.5% 0%
SPAMRATS DYNA DNSBL 11.9% 0%
SPAM EATING MONKEY - URI FRESH 15 URIBL 6.17% 0.08%
SPAM EATING MONKEY - URI RED URIBL 6.02% 0.03%
SPAM EATING MONKEY - URI FRESH 10 URIBL 5.12% 0.08%
SPAM EATING MONKEY - URI FRESH URIBL 4.52% 0.08%
JIPPG DNSBL 3.16% 0%
SPAM EATING MONKEY - URI BLACK URIBL 2.41% 0.03%
MAILSPIKE WL DNSWL 1.44% 1.66%
DRONEBL DNSBL 1.2% 0%
DNSWL NONE DNSWL 0.99% 4.82%
DNSWL HIGH DNSWL 0.45% 0%
JMF-WHITE DNSWL 0.4% 0.3%
DNSWL LOW DNSWL 0.11% 0%
CBLCN PLUS DNSBL 0% 0%
SURBL MALWARE URIBL 0% 0%
SWINOG DNSRBL DNSBL 0% 0%
UNSUBSCRIBE BLACKLIST DNSBL 0% 0%
IMP SPAMLIST DNSBL 0% 0%
SURBL CRACKED SITES URIBL 0% 0%
SPAMHAUS SBL URIBL 0% 0%
SWINOG URIBL URIBL 0% 0%
WPBL DNSBL 0% 0%

View the data processing guide to learn more.