Blacklists Compared

11 February 2006

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

HitsDNS Zone
72656(total number of IP addresses tested, including 477 at SDSC)
65060(union of most IP zones)
45410block.blars.org
41241t1.dnsbl.net.au
40330dnsbl.sorbs.net (union of all results)
36391sbl-xbl.spamhaus.org (union of all results)
35542blackholes.five-ten-sg.com (union of all results)
34564blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
34350xbl.spamhaus.org (union of all results)
33122cbl.abuseat.org
33112xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
33111sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
32219dnsbl.sorbs.net (result 127.0.0.10 = dialup)
24633psbl.surriel.com
23059dynablock.njabl.org
18073no-more-funn.moensted.dk (union of all results)
14718cn-kr.blackholes.us (result 127.0.0.2 = China)
14718cn-kr.blackholes.us (union of all results)
12322sbl.csma.biz
12039unconfirmed.dsbl.org
11934list.dsbl.org
11923dsbl.dnsbl.net.au
10579blacklist.spambag.org
10125china.blackholes.us
9355bl.spamcop.net
9044no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
6393combined-hib.dnsiplists.completewhois.com (union of all results)
6382combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
5936dnsbl.sorbs.net (result 127.0.0.6 = spam source)
5838dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
5629l2.spews.dnsbl.sorbs.net
5608bl.csma.biz
5053spews.dnsbl.net.au
5052l1.spews.dnsbl.sorbs.net
4958unsure.nether.net
4639no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
4593korea.blackholes.us
4561korea.services.net
4555wpbl.dnsbl.net.au
4102dnsbl.njabl.org (union of all results)
3805rmst.dnsbl.net.au
3674no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
3348dnsbl.rangers.eu.org (union of all results)
3318dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
3208dnsbl.ahbl.org (union of all results)
2927dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2757sbl.spamhaus.org
2741sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
2554spamsources.fabel.dk
2482brazil.blackholes.us
2452ricn.dnsbl.net.au
2399dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1903xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1903sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1667russia.blackholes.us
1659opm.blitzed.org
1656xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1656sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1645japan.blackholes.us
1539spam.wytnij.to
1259dnsbl.antispam.or.id
1150dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1095probes.dnsbl.net.au
1051dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1008turkey.blackholes.us
994bl.spamcannibal.org
984taiwan.blackholes.us
951dnsbl.njabl.org (result 127.0.0.3 = dialup)
898mail-abuse.blacklist.jippg.org
847mexico.blackholes.us
798dnsbl.ahbl.org (result 127.0.0.4 = spam source)
565argentina.blackholes.us
445no-more-funn.moensted.dk (result 127.0.0.9 = misc)
395blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
380malaysia.blackholes.us
380blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
372hongkong.blackholes.us
366thailand.blackholes.us
281no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
208singapore.blackholes.us
191query.bondedsender.org (not a blacklist!)
155blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
152blackholes.intersil.net
131relays.ordb.org
125dnsbl.njabl.org (result 127.0.0.2 = open relay)
116ohps.dnsbl.net.au
105dnsbl.njabl.org (result 127.0.0.4 = spam source)
82flowgoaway.com
80dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
74multihop.dsbl.org
62dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
41tr.countries.nerd.dk
35blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
34osps.dnsbl.net.au
28blackholes.uceb.org (union of all results)
23rdts.dnsbl.net.au
21nigeria.blackholes.us
17dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
17relays.nether.net
16hil.habeas.com
15tor.dnsbl.sectoor.de (union of all results)
14tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
14exemptions.ahbl.org (not a blacklist!)
13osrs.dnsbl.net.au
13dnsbl.ahbl.org (result 127.0.0.15 = open relay)
12dnsbl.sorbs.net (result 127.0.0.5 = open relay)
11combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
9blackholes.uceb.org (result 127.0.0.2 = open relay)
8blackholes.uceb.org (result 127.0.0.6 = spam haven)
7blackholes.uceb.org (result 127.0.0.3 = spam source)
7dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
7blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
5blackholes.uceb.org (result 127.0.0.5 = dialup)
5dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
5spamguard.leadmon.net (union of all results)
4dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
4blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
3owps.dnsbl.net.au
3spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
3blackholes.brainerd.net
2dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
2bl.deadbeef.com
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1spamsites.dnsbl.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)

The blackholes.intersil.net zone "lists entrenched spammers, mainsleaze and mainsleaze wannabes who have pestered users at Intersil." The flowgoaway.com zone lists FloNetwork systems.

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

HitsDNS Zone
72656(total number of IP addresses whose names were tested, including 477 at SDSC)
40085(union of all domain zones)
27221abuse.rfc-ignorant.org
27023rddn.dnsbl.net.au
19540whois.rfc-ignorant.org (union of all results)
15722whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
11191dynamic.rhs.mailpolice.com
3818whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2397webmail.rhs.mailpolice.com
993rhsbl.ahbl.org
681bl.deadbeef.com
518adv.rhs.mailpolice.com
282postmaster.rfc-ignorant.org
219bulk.rhs.mailpolice.com
124bogusmx.rfc-ignorant.org
120dsn.rfc-ignorant.org (zone not intended for this use)
4blackhole.securitysage.com
2porn.rhs.mailpolice.com
1cart00ney.surriel.com

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

HitsDNS Zone
34068(total number of domains tested, including 372 at SDSC)
7320(union of all domain zones)
2419abuse.rfc-ignorant.org
2312whois.rfc-ignorant.org (union of all results)
1807whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1231postmaster.rfc-ignorant.org
1217rhsbl.ahbl.org
1065webmail.rhs.mailpolice.com
874bogusmx.rfc-ignorant.org
777dsn.rfc-ignorant.org
505whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
246bulk.rhs.mailpolice.com
192adv.rhs.mailpolice.com
146bl.deadbeef.com
124porn.rhs.mailpolice.com
115blackhole.securitysage.com
34rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
34rhsbl.sorbs.net (union of all results)
31rddn.dnsbl.net.au (zone not intended for this use)
13dynamic.rhs.mailpolice.com
13ex.dnsbl.org
4cart00ney.surriel.com
2fraud.rhs.mailpolice.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 24 February 2006.