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) Firewall
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.
Spamhaus’ insight into malware, botnet C&Cs, and the domain reputation landscape.
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.
Find a wealth of threat intelligence related content here including blog posts, reports and case studies.
18 January 2023
17 January 2023
As anticipated, the number of newly observed and listed domains increased in Q4 2022. And with that, there was a steep increase in both compromise malware (+616%) and botnet C&C (+828%) listings. Find the detail and insight in this Q4 report.
6 December 2022
Malware threats such as Emotet and Qakbot are re-emerging. Here’s an effective and economical way to protect against them.
2 November 2022
As of Wednesday, November 9th, the CSS dataset will start to grow. We anticipate the addition of 1.5 million listings over the next 4-6 months; that's approximately a 100% increase! Find out why and the impact to you in this blog.
28 October 2022
Commercial or developer subscribers to any IP datasets via Spamhaus Intelligence API (SIA) will experience improved performance and search capabilities for this service.
20 October 2022
We bear good news regarding domain name abuse: almost all numbers are down compared to last quarter! See the Q3 trends and find the insight into some of the tactics used by bad actors and advice to circumvent falling victim.
13 October 2022
It was a busy quarter for Q3! No rest up over the vacation period with a 38% increase in botnet C&Cs detected by the research team - so there's a lot for you to catch up on. This quarter, we saw a vast amount of botnet C&Cs out of China - download the report to find all the updates.
12 October 2022
One of the Spamhaus Project's malware specialists has been battling GuLoader, attempting to analyze this tricky malware. Here they share their findings and explain how you can extract URLs from GuLoader.
6 October 2022
Using data from abuse.ch's platforms, the report gives an overview of malware campaigns, with insights into malware distribution sites, samples, IOCs & YARA rules.
22 September 2022
Are you currently using the Spamhaus Project’s DNS Blocklists (DNSBLs) and use Amazon Web Services' DNS? If you've answered "yes" to both of these questions, you need to make some changes to your email infrastructure.
14 September 2022
Discover the rich domain-related data points available via this easy-to-consume API and how you can become one of only 30 beta testers.