Blacklists Compared

28 January 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
72118(total number of IP addresses tested, including 545 at SDSC)
64253(union of most IP zones)
45346block.blars.org
40415dnsbl.sorbs.net (union of all results)
38277t1.dnsbl.net.au
35344blackholes.five-ten-sg.com (union of all results)
34363blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
32561dnsbl.sorbs.net (result 127.0.0.10 = dialup)
32402sbl-xbl.spamhaus.org (union of all results)
30549xbl.spamhaus.org (union of all results)
28951sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
28892xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
28868cbl.abuseat.org
22931psbl.surriel.com
22879dynablock.njabl.org
19494no-more-funn.moensted.dk (union of all results)
13869cn-kr.blackholes.us (result 127.0.0.2 = China)
13869cn-kr.blackholes.us (union of all results)
12769unconfirmed.dsbl.org
12707sbl.csma.biz
12684list.dsbl.org
12677dsbl.dnsbl.net.au
10696no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
10646blacklist.spambag.org
9988bl.spamcop.net
9153china.blackholes.us
6595dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
6359combined-hib.dnsiplists.completewhois.com (union of all results)
6319combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
6175bl.csma.biz
5647l2.spews.dnsbl.sorbs.net
5393dnsbl.sorbs.net (result 127.0.0.6 = spam source)
5075l1.spews.dnsbl.sorbs.net
5072spews.dnsbl.net.au
4977unsure.nether.net
4747dnsbl.rangers.eu.org (union of all results)
4716korea.blackholes.us
4682korea.services.net
4525wpbl.dnsbl.net.au
4411dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
4379no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
4136dnsbl.njabl.org (union of all results)
3740no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
3719rmst.dnsbl.net.au
3395dnsbl.ahbl.org (union of all results)
2956dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2492ricn.dnsbl.net.au
2352spamsources.fabel.dk
2314dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2269opm.blitzed.org
2262xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
2261sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
2174brazil.blackholes.us
2094sbl.spamhaus.org
2090sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1784xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1783sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1748japan.blackholes.us
1564russia.blackholes.us
1531spam.wytnij.to
1359dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1357dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1150dnsbl.antispam.or.id
1117taiwan.blackholes.us
1067dnsbl.ahbl.org (result 127.0.0.4 = spam source)
1049turkey.blackholes.us
990mexico.blackholes.us
987probes.dnsbl.net.au
981bl.spamcannibal.org
940dnsbl.njabl.org (result 127.0.0.3 = dialup)
877mail-abuse.blacklist.jippg.org
502argentina.blackholes.us
415malaysia.blackholes.us
405blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
397hongkong.blackholes.us
377no-more-funn.moensted.dk (result 127.0.0.9 = misc)
372blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
367thailand.blackholes.us
312no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
254dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
200query.bondedsender.org (not a blacklist!)
186singapore.blackholes.us
168blackholes.intersil.net
153dnsbl.njabl.org (result 127.0.0.2 = open relay)
151blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
134relays.ordb.org
128dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
116ohps.dnsbl.net.au
108dnsbl.njabl.org (result 127.0.0.4 = spam source)
91flowgoaway.com
65dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
62multihop.dsbl.org
40combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
38osps.dnsbl.net.au
36rdts.dnsbl.net.au
35dnsbl.regedit64.net
34blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
30blackholes.uceb.org (union of all results)
29dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
24relays.nether.net
23dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
22tr.countries.nerd.dk
20osrs.dnsbl.net.au
18exemptions.ahbl.org (not a blacklist!)
16nigeria.blackholes.us
15dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
11blackholes.uceb.org (result 127.0.0.6 = spam haven)
9blackholes.uceb.org (result 127.0.0.3 = spam source)
9spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
9spamguard.leadmon.net (union of all results)
8blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
7tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
7blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
7tor.dnsbl.sectoor.de (union of all results)
6dnsbl.ahbl.org (result 127.0.0.15 = open relay)
5blackholes.uceb.org (result 127.0.0.2 = open relay)
5blackholes.uceb.org (result 127.0.0.5 = dialup)
5blackholes.brainerd.net
4dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
4owps.dnsbl.net.au
4hil.habeas.com
4blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
3dnsbl.sorbs.net (result 127.0.0.5 = open relay)
3dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
2bl.deadbeef.com
1blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
1omrs.dnsbl.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)

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
72118(total number of IP addresses whose names were tested, including 545 at SDSC)
40642(union of all domain zones)
27170rddn.dnsbl.net.au
26938abuse.rfc-ignorant.org
19521whois.rfc-ignorant.org (union of all results)
15710whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
11483dynamic.rhs.mailpolice.com
3811whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2520webmail.rhs.mailpolice.com
1315rhsbl.ahbl.org
817bl.deadbeef.com
499adv.rhs.mailpolice.com
281postmaster.rfc-ignorant.org
260bulk.rhs.mailpolice.com
118bogusmx.rfc-ignorant.org
109dsn.rfc-ignorant.org (zone not intended for this use)
7blackhole.securitysage.com

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

HitsDNS Zone
35979(total number of domains tested, including 436 at SDSC)
7822(union of all domain zones)
2633whois.rfc-ignorant.org (union of all results)
2516abuse.rfc-ignorant.org
2104whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1294postmaster.rfc-ignorant.org
1270rhsbl.ahbl.org
1061webmail.rhs.mailpolice.com
890bogusmx.rfc-ignorant.org
827dsn.rfc-ignorant.org
529whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
257bulk.rhs.mailpolice.com
206adv.rhs.mailpolice.com
170bl.deadbeef.com
137porn.rhs.mailpolice.com
131blackhole.securitysage.com
41rddn.dnsbl.net.au (zone not intended for this use)
39rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
39rhsbl.sorbs.net (union of all results)
13ex.dnsbl.org
8dynamic.rhs.mailpolice.com
2fraud.rhs.mailpolice.com
2cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 13 February 2006.