Abusive Hosts Blocking List

If you use any of our services, please consider donating using the link to the right (or if you feel uncomfortable using PayPal, e-mail us at admins@2mbit.com and we can help find a way that works for you).  Please note that donations are not a requirement for using our service, so don't feel pressured.  Take some time to see how well the services work for you, then decide.

You are welcome to use our services, provided the use does not become abusive. Large providers do not need to ask for special permission to use our services.

You can also join our announcements mailing list here so you can keep updated on our services.

DNSbl ip4r Lookup System For Mail Servers
Our most popular service, and one of the most powerful, the DNSbl system allows users with mail servers to block known abusive hosts on the Internet in order to help reduce the spread of viruses, UCE/UBE/spam, phishing scams, and more.

To learn more about how this works, click here
To learn how to use this in your system, click here

RHSbl Lookup System For Mail Servers
One of the newer and more unique services we offer, is a list of domain names owned/operated by spammers.  This list is highly useful for blocking mail based on the From: address used by many mainsleeze spammers and bulk mailing spam-hausen.

To learn how to use this in your system, click here.

IRCbl Lookup System For IRC Networks

We've put together a list for IRC admins who wish to take advantage of our list on their IRC networks to help prevent abuse and open proxies from connecting to their servers.  This list contains only the proxy and DDoS drone data from our main list, without extras such as the Spam Sources list and Shoot On
Sight.

To learn how to use this in your system, click here

TOR DNSbl
This list is for administrators who want to deny access to TOR nodes for various reasons.  The list is updated hourly, and contains all of the exit nodes which anonymous traffic may come from.  Please note that we do not object to the use of TOR, but rather provide this as a way to help curb the recent abuse from TOR nodes being used for things other then their intended purpose.

To find out more about this system, click here.

Whitelist
Do not contact us about the whitelist any further, thank you!

There is an excellent one we highly recommend, called dnswl. It is a service we use locally for our own filtering, and complements our own DNSbl very nicely.