Blacklists Compared

17 December 2005

[ 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
55044(total number of IP addresses tested, including 489 at SDSC)
47693(union of most IP zones)
34186block.blars.org
27916dnsbl.sorbs.net (union of all results)
26807t1.dnsbl.net.au
26454blackholes.five-ten-sg.com (union of all results)
25130blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
22405sbl-xbl.spamhaus.org (union of all results)
21322dnsbl.sorbs.net (result 127.0.0.10 = dialup)
20500xbl.spamhaus.org (union of all results)
19775cbl.abuseat.org
19639sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
19625xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
16323psbl.surriel.com
14800dynablock.njabl.org
12565no-more-funn.moensted.dk (union of all results)
11576cn-kr.blackholes.us (result 127.0.0.2 = China)
11576cn-kr.blackholes.us (union of all results)
8442unconfirmed.dsbl.org
8363china.blackholes.us
8357list.dsbl.org
8353dsbl.dnsbl.net.au
7282sbl.csma.biz
6783blacklist.spambag.org
6148no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
5959bl.spamcop.net
5283combined-hib.dnsiplists.completewhois.com (union of all results)
5277combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
4445dnsbl.sorbs.net (result 127.0.0.6 = spam source)
4136l2.spews.dnsbl.sorbs.net
3634no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
3533l1.spews.dnsbl.sorbs.net
3531spews.dnsbl.net.au
3472unsure.nether.net
3347bl.csma.biz
3250wpbl.dnsbl.net.au
3213korea.blackholes.us
3192korea.services.net
3183dnsbl.njabl.org (union of all results)
2974dnsbl.rangers.eu.org (union of all results)
2925dnsbl.ahbl.org (union of all results)
2877dnsbl.regedit64.net
2765sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
2765sbl.spamhaus.org
2752rmst.dnsbl.net.au
2715dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
2657ricn.dnsbl.net.au
2640spamsources.fabel.dk
2345no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
2267dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2222dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2006brazil.blackholes.us
1958dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1639russia.blackholes.us
1481opm.blitzed.org
1418xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1413sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1265japan.blackholes.us
1209spam.wytnij.to
1196dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1055sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1050xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1023dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
957dnsbl.ahbl.org (result 127.0.0.4 = spam source)
941dnsbl.antispam.or.id
913probes.dnsbl.net.au
897bl.spamcannibal.org
697blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
682tr.countries.nerd.dk
678turkey.blackholes.us
667mexico.blackholes.us
651taiwan.blackholes.us
636dnsbl.njabl.org (result 127.0.0.3 = dialup)
495argentina.blackholes.us
432mail-abuse.blacklist.jippg.org
419blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
316malaysia.blackholes.us
302hongkong.blackholes.us
263no-more-funn.moensted.dk (result 127.0.0.9 = misc)
203thailand.blackholes.us
201query.bondedsender.org (not a blacklist!)
200no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
180singapore.blackholes.us
175dnsbl.njabl.org (result 127.0.0.4 = spam source)
169blackholes.intersil.net
163dnsbl.njabl.org (result 127.0.0.2 = open relay)
150dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
140relays.ordb.org
123blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
95dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
95flowgoaway.com
90dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
77ohps.dnsbl.net.au
75dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
73multihop.dsbl.org
67blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
31relays.nether.net
23rdts.dnsbl.net.au
21blackholes.uceb.org (union of all results)
18dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
17spamguard.leadmon.net (union of all results)
16osps.dnsbl.net.au
15osrs.dnsbl.net.au
15spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
14nigeria.blackholes.us
12exemptions.ahbl.org (not a blacklist!)
10dnsbl.sorbs.net (result 127.0.0.5 = open relay)
8blackholes.uceb.org (result 127.0.0.6 = spam haven)
8tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
8blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
8dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
8tor.dnsbl.sectoor.de (union of all results)
7blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
7blackholes.brainerd.net
6blackholes.uceb.org (result 127.0.0.3 = spam source)
6blackholes.uceb.org (result 127.0.0.2 = open relay)
6hil.habeas.com
6combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
6dnsbl.ahbl.org (result 127.0.0.15 = open relay)
3owps.dnsbl.net.au
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2omrs.dnsbl.net.au
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1spamsites.dnsbl.net.au
1blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)

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
55044(total number of IP addresses whose names were tested, including 489 at SDSC)
28020(union of all domain zones)
19366abuse.rfc-ignorant.org
16824rddn.dnsbl.net.au
12862whois.rfc-ignorant.org (union of all results)
9806whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
7803dynamic.rhs.mailpolice.com
3056whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2166webmail.rhs.mailpolice.com
1284rhsbl.ahbl.org
568bulk.rhs.mailpolice.com
568adv.rhs.mailpolice.com
478bl.deadbeef.com
270postmaster.rfc-ignorant.org
121bogusmx.rfc-ignorant.org
118dsn.rfc-ignorant.org (zone not intended for this use)
2blackhole.securitysage.com
2porn.rhs.mailpolice.com

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

HitsDNS Zone
31304(total number of domains tested, including 423 at SDSC)
7419(union of all domain zones)
2797whois.rfc-ignorant.org (union of all results)
2692abuse.rfc-ignorant.org
2079whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1136postmaster.rfc-ignorant.org
1114webmail.rhs.mailpolice.com
874rhsbl.ahbl.org
747dsn.rfc-ignorant.org
718whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
474bogusmx.rfc-ignorant.org
466bulk.rhs.mailpolice.com
378rddn.dnsbl.net.au (zone not intended for this use)
253adv.rhs.mailpolice.com
186dynamic.rhs.mailpolice.com
143bl.deadbeef.com
127porn.rhs.mailpolice.com
126blackhole.securitysage.com
38rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
38rhsbl.sorbs.net (union of all results)
19ex.dnsbl.org
1fraud.rhs.mailpolice.com
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 31 December 2005.