Confirmation emails for some delisting requests are currently experiencing delays. We are working to resolve this as quickly as possible - we apologize for this inconvenience. Please review this page for an update on status.

The Spamhaus Project
IP and Domain Reputation Checker
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Do you have problems sending email? Do you need to check if an

IP address
or
domain name
is on one of our
blocklists
?

Relax, you’re in the right place. We’re here to help.

ARE YOU A MICROSOFT CUSTOMER?

If you are experiencing email issues, but you’re not listed, and use Microsoft please read this help guide.

The Spamhaus Project is a non-profit organization dedicated to making the internet a better place for everyone.

Lookup

Do you have problems sending email? Do you need to check if an

IP address
or
domain name
is on one of our
blocklists
?

Relax, you’re in the right place. We’re here to help.

ARE YOU A MICROSOFT CUSTOMER?

If you are experiencing email issues, but you’re not listed, and use Microsoft please read this help guide.

Robot
Lookup

The Spamhaus Project is a non-profit organization dedicated to making the internet a better place for everyone.