Blacklist Check

Check to see if your IP addresses are listed with nearly 70 DNS based anti-spam databases! Will your mail server be blocked by DNSbl filters?

Probably the most common way of detecting spam is rejecting mail that comes from mail servers known (or believed) to send spam. This is done by taking the IP address of the remote mail server, converting it to a domain name using the ip4r format (a.b.c.d becomes d.c.b.a.lookupzone.com), and doing a lookup to check if that IP address is listed in one of the databases.

Just because the IP is listed with a particular blacklist does not mean that you are sending spam, just that particular blacklist suggests not to accept mail directly from that IP address. Most residential Cable/DSL IP addresses that are dynamically assigned will indicate that they are blacklisted, meaning you should be sending from your ISP's mail server, not a mail server running on your own internet connection.

If you have questions or would like to discuss DNS based blacklists please visit the DNS based Blacklists Forum.

FAQ: What is a DNSBL?

Blacklist Check List

access.redhawk.org b.barracudacentral.org bl.csma.biz
bl.emailbasura.org bl.spamcannibal.org bl.spamcop.net
bl.technovision.dk blackholes.five-ten-sg.com blackholes.wirehub.net
blacklist.sci.kun.nl block.dnsbl.sorbs.net blocked.hilli.dk
cart00ney.surriel.com cbl.abuseat.org dev.null.dk
dialup.blacklist.jippg.org dialups.mail-abuse.org dialups.visi.com
dnsbl.ahbl.org dnsbl.antispam.or.id dnsbl.cyberlogic.net
dnsbl.kempt.net dnsbl.njabl.org dnsbl.sorbs.net
dnsbl-1.uceprotect.net dnsbl-2.uceprotect.net dnsbl-3.uceprotect.net
duinv.aupads.org dul.dnsbl.sorbs.net dul.ru
escalations.dnsbl.sorbs.net fl.chickenboner.biz hil.habeas.com
http.dnsbl.sorbs.net intruders.docs.uu.se korea.services.net
mail-abuse.blacklist.jippg.org misc.dnsbl.sorbs.net msgid.bl.gweep.ca
new.dnsbl.sorbs.net no-more-funn.moensted.dk old.dnsbl.sorbs.net
pbl.spamhaus.org proxy.bl.gweep.ca psbl.surriel.com
pss.spambusters.org.ar rbl.schulte.org rbl.snark.net
recent.dnsbl.sorbs.net relays.bl.gweep.ca relays.bl.kundenserver.de
relays.mail-abuse.org relays.nether.net rsbl.aupads.org
sbl.spamhaus.org smtp.dnsbl.sorbs.net socks.dnsbl.sorbs.net
spam.dnsbl.sorbs.net spam.olsentech.net spamguard.leadmon.net
spamsources.fabel.dk tor.ahbl.org web.dnsbl.sorbs.net
whois.rfc-ignorant.org xbl.spamhaus.org zen.spamhaus.org
zombie.dnsbl.sorbs.net bl.tiopan.com

WhatIsMyIPAddress.com does not run, manage, or have any direct relationship with any blacklist. We provide a single location to check the status of an IP address on 3rd party blacklists. WhatIsMyIPAddress.com does not recommend the usage of any specific blacklist and does not condone blacklists that require payment for removal. Our inclusion of such blacklists are for the purposes of completeness and should not be consider to be in support of that blacklist's usage.

Legend

= Not Listed
= Listed
= Timeout Error
= Offline

Related Articles