IP Blacklist Lookup

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About IP Blacklist Lookup

It is possible to check if your IP address is listed in an anti-spam database. Will your emails or forum discussions be blocked? 

The main databases that list IP addresses on blacklists are listed below. Check the list and you will see that the database names are not checked.

Look up your IP address. Enter your domain name in the field below. Click "Submit" and let the tool do the rest.


How does Domain IP Blacklist Lookup work?

The list below is for 26 DNS-based anti-spam databases (DNS stands for Domain Name System, not for Do Not Solicit.) 


The SPAM Database Server List


  1. dnsbl-1.uceprotect.net.

  2. dnsbl-2.uceprotect.net.

  3. dnsbl-3.uceprotect.net.

  4. dnsbl.dronebl.org.

  5. dnsbl.sorbs.net.

  6. spam.dnsbl.sorbs.net.

  7. bl.spamcop.net.

  8. recent.dnsbl.sorbs.net.

  9. all.spamrats.com.

  10. b.barracudacentral.org.

  11. bl.blocklist.de.

  12. bl.mailspike.org.

  13. bl.spamcop.net.

  14. cblplus.anti-spam.org.cn.

  15. dnsbl.anticaptcha.net.

  16. ip.v4bl.org.

  17. fnrbl.fast.net.

  18. dnsrbl.swinog.ch.

  19. mail-abuse.blacklist.jippg.org.

  20. singlebl.spamgrouper.com.

  21. spam.abuse.ch.

  22. spamsources.fabel.dk.

  23. virbl.dnsbl.bit.nl.

  24. cbl.abuseat.org.

  25. dnsbl.justspam.org.

  26. zen.spamhaus.org.


In these lists, for example, Internet Service Providers (ISPs) and web servers look for IP addresses linked to computers that send spam or unwanted activity.

For your IP address, you may see the blacklisted symbol (IP Listed: Bad) next to some databases.

It is possible that at some point your IP address has been flagged and blocked by some servers for some reason. (It is possible that someone who was assigned this IP address at some point in time has been blacklisted).

Of course, if it appears that you are involved in spamming or other undesirable online behavior, your IP address may be blacklisted and blocked.

It will be flagged and landed in one or more of these databases. This can be checked here at any time by performing a new blacklist check.