DNS Blacklist Statistics

The statistics below have been generated from ORF Enterprise Edition statistics reports sent by ORF users.

DNS Blacklist Statistics

The table below shows the popularity of DNS blacklists in the default ORF DNS blacklist definition set. The table is generated from reports received in the last 90 days.

Blacklist ID Full Name Popularity % Spam/Legitimate %
SPAMCOP SpamCop 100% 31%
CBL CBL Composite Blocking List 91% 43%
SPAMHAUS-ZEN Spamhaus ZEN (Combined) 48% 60%
AHBL Abusive Host Blocking List (AHBL) 46% 1%
SPAMHAUS-SBLXBL Spamhaus SBL+XBL (Combined) 45% 24%
SORBS-ALL SORBS Combined List 45% 25%
BLCKUS-CNKR blackholes.us China and Korea combined networks 39% 3%
DSBL-TRUST-S Distributed Sender Blackhole List (Single) 38% 5%
SPAMHAUS Spamhaus SBL (Spam Block List) 29% 1%
NJABL Not Just Another Bogus List (NJABL) 28% 1%
BLCKUS-CN blackholes.us China network 16% 4%
SPAMBAG spambag.org 15% < 1%
BLCKUS-KR blackholes.us Korea network 14% 1%
SPAMHAUS-XBL Spamhaus XBL (Exploits Block List) 14% 38%
FIVETEN FiveTen Blackhole List 14% 26%
PSBL Passive Spam Block List 12% 21%
NOMOREFUNN No-more-funn 11% 33%

Popularity: Relative popularity based on number of emails checked. 100% means that this blacklist was used the most time to check an email source.

Spam/Legitimate: Spam/legitimate email ratio, specifies how many percent of the checked emails has been listed in the given blacklist. 25% means that every 4th email source was listed in the blacklist.