Dear User,

If you are receiving a message that your IP address is blacklisted, our blacklist is not the culprit. Our blacklist is used only to track IP’s that are not yet registered for use on the Internet. If you have found yourself listed, most likely you have an IP address in the range 10.x.x.x or 192.168.x.x. These IP addresses are not the actual address you have on the Internet. They are used specifically for local networks only. They are known as private or reserved addresses, and the technical explanation can be found here:

Please see the following URL to determine what your actual IP address:

You can find more about the 192.168.x.x and 10.x.x.x IP prefix here:

IP addresses reserved for the local network are not intended to appear on the Internet. This is why you are listed as a Bogon in our various tools. Often we find that well-intentioned network administrators might have added our Bogon block list data to (as an example) email servers, thinking it was a list of “bad” IPs, but this is not the way the list is intended to be used. Unfortunately, as we do not control your network at all, we are unable to “unblock you”. Please contact your network administrator and ask them to consider removing the Team Cymru Bogon list as it may be being used incorrectly.

Check to see if your IP address is blocked at:

Maintaining a list of Bogons is one of the various things we do to try and make the Internet run more efficiently.

Team Cymru