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Have you been blocked?

All blocklists are researched and managed by The Spamhaus Project.

Simply click on the link below, which will take you to the Project’s IP and Domain Reputation Checker. From here you will be able to enter your IP or Domain and begin your request for removal.

Please note that the Project’s IP and Domain Reputation Checker is the only place where removals are handled.

Visit Spamhaus Project

To make way for a new free Passive DNS search tool, Spamhaus will be deprecating its free passive DNS service, which will no longer be available as of June 24th, 2022.

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Passive DNS

Our Passive DNS allows you to quickly and easily navigate through billions of DNS records to shine a spotlight on potentially malicious internet resources associated with your network or domain.

  • Reduce investigation times
  • Enrich data sources
  • Protect customers and end-users
Sign up for a free trial Learn more

Spamhaus Intelligence API (SIA)

This API provides access to multiple datasets containing metadata relating to compromised IP addresses. These IP addresses may be exhibiting compromised behavior, including malware, worm, and trojan infections, and SMTP-specific traffic emitting spam, or cybercriminals are using them to control infected computers – botnet command & controllers.

The breadth of data available via an easily consumable API provides security developers with scores of opportunities.

  • Save valuable time investigating and reporting
  • Simple and quick to access
  • Data you can trust in
Sign up for a free trial Learn more