Blacklists Compared

26 June 2010

[ Fighting Spam | Dialup Zones | Blacklists Compared | Current Blacklist Comparison | Sendmail Configuration ]

Survey results for all known public IP-based DNS blacklists. Lookups were done on connecting IP addresses. The "union of most IP zones" line excludes the hostkarma.junkemailfilter.com (all results but 127.0.0.2, 127.0.0.3, and 127.0.0.4), exemptions.ahbl.org, query.bondedsender.org, list.dnswl.org, accredit.habeas.com, iadb.isipp.com, iadb2.isipp.com, and wl.mailspike.net zones because they are not blacklists. Because it is too aggressive to be widely useful the l2.apews.org zone is also excluded from the union.

HitsDNS Zone
192923(total number of IP addresses tested, including 178 at SDSC)
189847(union of most IP zones)
178601b.barracudacentral.org
177791zen.spamhaus.org (union of all results)
162850l2.apews.org
151067cbl.abuseat.org
151017zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
140727hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
136422dnsbl-1.uceprotect.net
135416psbl.surriel.com
128335dnsbl-2.uceprotect.net
126343bl.spameatingmonkey.net
125326dnsbl-3.uceprotect.net
123591bl.mailspike.net (union of all results)
105691zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
102171dnsbl.sorbs.net (union of all results)
94564bl.mailspike.net (result 127.0.0.10 = worst possible reputation)
91900ubl.unsubscore.com
84826hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
68414bl.tiopan.com
66600dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
53477blackholes.five-ten-sg.com (union of all results)
50486spam.dnsbl.sorbs.net
48786dnsbl.sorbs.net (result 127.0.0.10 = dialup)
48008bl.mailspike.net (result 127.0.0.2 = distributed spam wave participant)
45682bl.spamcop.net
45387blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
41751bl.score.senderscore.com
41269db.wpbl.info
35038zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
26895ix.dnsbl.manitu.net
25734no-more-funn.moensted.dk (union of all results)
19775mail-abuse.blacklist.jippg.org
19159no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
17589bl.mailspike.net (result 127.0.0.12 = bad reputation)
17115dnsbl.inps.de
12234hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
7368bl.mailspike.net (result 127.0.0.11 = very bad reputation)
6785blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
6278no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
6164dnsbl.ahbl.org (union of all results)
5274bl.spamcannibal.org
4847korea.services.net
4312dnsbl.sorbs.net (result 127.0.0.6 = spam source)
4267spamsources.fabel.dk
4120list.dnswl.org (not a blacklist!)
4020dnsbl.ahbl.org (result 127.0.0.4 = spam source)
2901hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2857ips.backscatterer.org
2089dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1946hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1838dnsbl.njabl.org (union of all results)
1745tr.countries.nerd.dk
1685dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1318hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1275blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1010wl.mailspike.net (union of all results) (not a blacklist!)
866wl.mailspike.net (result 127.0.0.17 = possible legitimate sender) (not a blacklist!)
503accredit.habeas.com (not a blacklist!)
390query.bondedsender.org (not a blacklist!)
369zen.spamhaus.org (union of SBL and SBLCSS results)
365aspews.ext.sorbs.net
363zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
262no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
249l2.bbfh.ext.sorbs.net
139tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
139tor.dnsbl.sectoor.de (union of all results)
124iadb2.isipp.com (not a blacklist!)
110no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
98no-more-funn.moensted.dk (result 127.0.0.9 = misc)
95hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
94wl.mailspike.net (result 127.0.0.18 = good reputation) (not a blacklist!)
93dnsbl.njabl.org (result 127.0.0.2 = open relay)
91iadb.isipp.com (not a blacklist!)
90l1.bbfh.ext.sorbs.net
60dnsbl.njabl.org (result 127.0.0.4 = spam source)
55dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
50wl.mailspike.net (result 127.0.0.19 = very good reputation) (not a blacklist!)
47bl.deadbeef.com
29blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
18spamguard.leadmon.net (union of all results)
14zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
14spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
11dnsbl-0.uceprotect.net
7dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
6zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
5multi.uribl.com (result 127.0.0.2 = spam resource)
5hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
5multi.uribl.com (union of all results)
3multi.surbl.org
3spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
1spamguard.leadmon.net (result 127.0.0.8 = open proxy)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)

Survey results for all known public domain-name-based DNS blacklists. Lookups were done on the domain names of connecting IP addresses. The "union of most domain zones" line includes data from the hostkarma.junkemailfilter.com zone only when the results are 127.0.0.2, 127.0.0.3, or 127.0.0.4 because other results are not blacklists.

HitsDNS Zone
192923(total number of IP addresses whose names were tested, including 178 at SDSC)
124483hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
114140hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
96963(union of most domain zones)
89748l1.apews.org
80570abuse.rfc-ignorant.org
36788whois.rfc-ignorant.org (union of all results)
27154whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
11563hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
9634whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
3107hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
3082hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
540hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
438urired.spameatingmonkey.net
410hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
215dbl.spamhaus.org
101hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
88hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
62rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
62rhsbl.sorbs.net (union of all results)
56postmaster.rfc-ignorant.org
38rhsbl.ahbl.org
33dsn.rfc-ignorant.org (zone not intended for this use)
32bogusmx.rfc-ignorant.org
22multi.uribl.com (result 127.0.0.2 = spam resource)
22multi.uribl.com (union of all results)
14multi.surbl.org
14fresh.spameatingmonkey.net
13dob.sibl.support-intelligence.net
3bl.deadbeef.com

Survey results for all known public domain-name-based DNS blacklists. Lookups were done on SMTP sender domains. The "union of most domain zones" line includes data from the hostkarma.junkemailfilter.com zone only when the results are 127.0.0.2, 127.0.0.3, or 127.0.0.4 because other results are not blacklists.

HitsDNS Zone
60695(total number of domains tested, including 161 at SDSC)
58604hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
9185(union of most domain zones)
5701hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
2774hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
2659urired.spameatingmonkey.net
2646abuse.rfc-ignorant.org
2396whois.rfc-ignorant.org (union of all results)
2156whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1855hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1604postmaster.rfc-ignorant.org
1204hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1054l1.apews.org
995dbl.spamhaus.org
986multi.surbl.org
777bogusmx.rfc-ignorant.org
610multi.uribl.com (union of all results)
599multi.uribl.com (result 127.0.0.2 = spam resource)
479hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
293dsn.rfc-ignorant.org
240whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
82hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
33fresh.spameatingmonkey.net
25hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
24rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
24rhsbl.sorbs.net (union of all results)
20rhsbl.ahbl.org
13hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
11ex.dnsbl.org
10multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
8dob.sibl.support-intelligence.net
3hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
2hostkarma.junkemailfilter.com (result 127.0.1.3 = MTA somtimes sends QUIT)
2bl.deadbeef.com
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 1 July 2010.