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.
IT and security teams consistently face multiple business challenges. Discover how our solutions can help overcome some of those issues.
From processing issues, to email-borne threats our blocklists easily integrate with your current email set-up to improve anti-spam & anti-virus email filtering.
Employ our threat intelligence to increase visibility across security events, reveal potential weaknesses in your network, and threats to your brand.
Stay on top of the latest threats and proactively combat botnet infections, and other forms of abuse, with our solutions.
From clicking on phishing emails to visiting malware dropper sites, our threat intelligence provides automatic protection for your users.
Data for Integration
Enhance your service and create competitive advantage by integrating Spamhaus’ world-class IP and domain reputation data.
Our products provide additional layers of security for networks and email. They also present security teams with additional insight into malicious behavior.
Border Gateway Protocol (BGP)
Block the worst of the worst at your network edge, taking advantage of your existing BGP-capable routers. Configuration only takes minutes.
Data Query Service (DQS)
Benefit from industry-leading real time blocklists. These DNSBLs easily plug into your existing email infrastructure to block spam and other email threats.
A powerful research tool to investigate relationships between internet infrastructures. Quickly pivot to new areas of concern to rapidly investigate potential threats.
Immediately block connections to dangerous sites, including phishing and malware dropper websites. A ‘set and forget’ solution.
Spamhaus Intelligence API
Threat intelligence data in API format to enable users to easily integrate metadata relating to threats with their own applications, programs, and products.
A wide range of datasets, providing multiple layers of protection. They can be plugged directly into your existing hardware, making them an affordable choice.
Border Gateway Protocol (BGP) Feeds
Do Not Route Or Peer (DROP) and Botnet Controller List (BCL) datafeeds can peer with your existing BGP-capable router.
Domain (DBL), Zero Reputation (ZRD) and Hash blocklists (HBL) enable you to block content in emails, filtering out a higher rate of email-borne threats.
Data for Investigation
Passive DNS and extended datasets give you additional information on internet resources. They provide deeper insights into incidents and possible threats.
DNS Firewall Threat Feeds
A wide range of feeds to apply to your DNS recursive server. Choose the right level of protection for your organization.
Spam (SBL), Policy (PBL), Exploits (XBL) and Auth (AuthBL) blocklists allow you to filter email from IPs associated with spam, botnets, and other threats.
Find out more about us.
Learn more about Spamhaus; who we are, and what we do.
Find a parter
Discover our partners and how they can support you.
Become a partner
Learn about the benefits of being a Spamhaus partner and how to get started.
Discover a wide range of blog posts, case studies and reports.
Commonly asked questions about Spamhaus products and processes.
The Blocklist Tester
A tool to help you check if your servers are correctly configured to use Spamhaus DNSBLs.
The Reputation Portal
A tool for ASN owners to get visibility of their IPs’ reputation and proactively manage listings.
Help for the Project's legacy DNSBLs users
Using the Project’s legacy blocklists and suddenly experiencing email issues? This page may be able to help.
In depth information about the technical details and implementation of our products.
Posted by Sarah Miller on 14 Sep 2022
Until recently, domain data from Spamhaus has been limited to a binary "yes it's listed" or "no it's not." Helpful for a blocklist but not so helpful if you want contextual insight into the reputation of that domain. All this is changing with the beta release of Domain Reputation Data via Spamhaus Intelligence API (SIA). Read on to discover the rich data points available via this easy-to-consume API and how you can become one of only 30 beta testers.
For over a decade, the researchers have had a dedicated team observing domains 24/7. This will come as no surprise because, as the team discussed in the new domain report released in July, “No matter what you’re doing on the internet, legitimate or otherwise, you must (almost always) use a domain name.” Domains are part of the fabric of DNS.
Until now, the only data shared with users are DNS blocklists (DNSBLs) for email and Response Policy Zones (RPZ) for DNS Firewalls. However, researchers continuously monitor global signals to create these lists, compiling vast swathes of data relating to domains.
It’s time to enable our users to drink at the fountain of reputation!
This data provides detailed insight into every domain the research team observes (and that’s a lot of domains). The following metadata fields are included in the dataset:
Easy. By API – making it easy to either use as a standalone dataset or to enrich existing data sources.
There are multiple uses for this data-rich domain intelligence. Here are just a few ideas:
We are only looking for 30 beta testers, so it’s a case of first come, first served. If you’d like to register your interest, please go to https://www.spamhaus.com/campaign/domain-reputation-via-api/ and complete the form. However, please remember the following:
If you have the resources to “kick the tires” of this new dataset, we’d love to have you test it and help shape future iterations. Register here.
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.
23 August 2022
Network intelligence provider, Kentik, support companies like Sky, Tesla, Spotify. Read how they're using Spamhaus' data to provide proactive threat intelligence to their customers.
25 January 2022
The breadth of reputation data available via the Spamhaus intelligence API is increasing - the extended Botnet Controller List is now included.
23 March 2021
Global cybersecurity software company, Red Sift, use the Spamhaus Intelligence API to free up time for their customers while providing important insight on why an IP is blocked.