Blacklists Compared

6 January 2007

[ 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 exemptions.ahbl.org, query.bondedsender.org, and list.dnswl.org zones because they are not blacklists. Because it is too aggressive to be widely useful the block.blars.org zone is also excluded.

HitsDNS Zone
149176(total number of IP addresses tested, including 496 at SDSC)
142700(union of most IP zones)
124833t1.dnsbl.net.au
114093zen.spamhaus.org (union of all results)
94543dnsbl.sorbs.net (union of all results)
92907sbl-xbl.spamhaus.org (union of all results)
92432xbl.spamhaus.org (union of all results)
91923zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
91908sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
91904cbl.abuseat.org
91902xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
85387block.blars.org
79264dnsbl.sorbs.net (result 127.0.0.10 = dialup)
77983no-more-funn.moensted.dk (union of all results)
71441blackholes.five-ten-sg.com (union of all results)
71042psbl.surriel.com
67441blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
61521dnsbl.tqmcube.com (union of all results)
57817no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
56669dnsbl-1.uceprotect.net
56222dynablock.njabl.org
54763zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL)
42162dnsbl-2.uceprotect.net
41902dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
25281dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
22557dnsbl-3.uceprotect.net
20699bl.spamcop.net
18653bl.csma.biz
18195wpbl.dnsbl.net.au
14247dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
12629unconfirmed.dsbl.org
12522list.dsbl.org
12514dsbl.dnsbl.net.au
11154cn-kr.blackholes.us (result 127.0.0.2 = China)
11154cn-kr.blackholes.us (union of all results)
11058no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
9775blacklist.spambag.org
9520ubl.unsubscore.com
8627no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
8459dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
8423korea.services.net
7782dnsbl.njabl.org (union of all results)
7410korea.blackholes.us
7052unsure.nether.net
6229mail-abuse.blacklist.jippg.org
5795tr.countries.nerd.dk
5788turkey.blackholes.us
5047rmst.dnsbl.net.au
4136dnsbl.njabl.org (result 127.0.0.9 = open proxy)
4104dnsbl.tqmcube.com (result 127.0.0.5 = China)
3744china.blackholes.us
3458dnsbl.njabl.org (result 127.0.0.3 = dialup)
3264brazil.blackholes.us
2992blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2729dnsbl.ahbl.org (union of all results)
2624dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2427zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
2427sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
2426xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
2311dnsbl.sorbs.net (result 127.0.0.6 = spam source)
2293bl.spamcannibal.org
2172spamsources.fabel.dk
1997probes.dnsbl.net.au
1846taiwan.blackholes.us
1660japan.blackholes.us
1563russia.blackholes.us
1271list.dnswl.org (not a blacklist!)
1011dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
987argentina.blackholes.us
788dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
756blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
668zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
668sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
668sbl.spamhaus.org
600mexico.blackholes.us
536thailand.blackholes.us
440malaysia.blackholes.us
387blackholes.uceb.org (union of all results)
348blackholes.uceb.org (result 127.0.0.6 = spam haven)
314l1.spews.dnsbl.sorbs.net
309no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
298hongkong.blackholes.us
284singapore.blackholes.us
284no-more-funn.moensted.dk (result 127.0.0.9 = misc)
250l2.spews.dnsbl.sorbs.net
219work.drbl.croco.net
207blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
175blackholes.uceb.org (result 127.0.0.3 = spam source)
167sbl.csma.biz
141query.bondedsender.org (not a blacklist!)
111dnsbl.njabl.org (result 127.0.0.2 = open relay)
96dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
79dnsbl.njabl.org (result 127.0.0.4 = spam source)
75multihop.dsbl.org
74spam.wytnij.to
71flowgoaway.com
43blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
35dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
31ricn.dnsbl.net.au
25tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
25tor.dnsbl.sectoor.de (union of all results)
24ohps.dnsbl.net.au
23relays.nether.net
19dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
17blackholes.uceb.org (result 127.0.0.5 = dialup)
17multi.surbl.org
16nigeria.blackholes.us
16rdts.dnsbl.net.au
14exemptions.ahbl.org (not a blacklist!)
13spamguard.leadmon.net (union of all results)
12spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
11dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
10dnsbl.ahbl.org (result 127.0.0.15 = open relay)
9osps.dnsbl.net.au
9bl.deadbeef.com
8blackholes.uceb.org (result 127.0.0.2 = open relay)
6blackholes.brainerd.net
5owps.dnsbl.net.au
5osrs.dnsbl.net.au
5dnsbl.ahbl.org (result 127.0.0.4 = spam source)
3no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
2dnsbl.sorbs.net (result 127.0.0.5 = open relay)
2omrs.dnsbl.net.au
1multi.uribl.com (result 127.0.0.2 = spam resource)
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
1multi.uribl.com (union of all results)

Survey results for all known public domain-name-based DNS blacklists. Lookups were done on the domain names of connecting IP addresses.

HitsDNS Zone
149176(total number of IP addresses whose names were tested, including 496 at SDSC)
99095(union of all domain zones)
77229rddn.dnsbl.net.au
59830abuse.rfc-ignorant.org
50838dynamic.rhs.mailpolice.com
42492whois.rfc-ignorant.org (union of all results)
28336whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
14161whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4685webmail.rhs.mailpolice.com
446adv.rhs.mailpolice.com
361postmaster.rfc-ignorant.org
283multi.surbl.org
242rhsbl.ahbl.org
199multi.uribl.com (union of all results)
197multi.uribl.com (result 127.0.0.2 = spam resource)
114bl.deadbeef.com
82dsn.rfc-ignorant.org (zone not intended for this use)
77bogusmx.rfc-ignorant.org
68bulk.rhs.mailpolice.com
2porn.rhs.mailpolice.com
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1multi.uribl.com (result 127.0.0.4 = opt-out spam resource)

Survey results for all known public domain-name-based DNS blacklists. Lookups were done on SMTP sender domains.

HitsDNS Zone
90138(total number of domains tested, including 458 at SDSC)
16465(union of all domain zones)
7614whois.rfc-ignorant.org (union of all results)
6851whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4269abuse.rfc-ignorant.org
2121webmail.rhs.mailpolice.com
2053multi.surbl.org
1710multi.uribl.com (union of all results)
1659multi.uribl.com (result 127.0.0.2 = spam resource)
1612postmaster.rfc-ignorant.org
995bogusmx.rfc-ignorant.org
843dsn.rfc-ignorant.org
763whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
518rhsbl.ahbl.org
411porn.rhs.mailpolice.com
211adv.rhs.mailpolice.com
181bulk.rhs.mailpolice.com
155blackhole.securitysage.com
61rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
61rhsbl.sorbs.net (union of all results)
47multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
21rddn.dnsbl.net.au (zone not intended for this use)
14ex.dnsbl.org
4multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
4dynamic.rhs.mailpolice.com
1bl.deadbeef.com
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 11 January 2007.