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 The Spamhaus Team on 3 Apr 2020
Healthcare providers are facing an increasing number of cyber attacks in the face of the COVID-19 crisis. To help combat malicious threats including malware, phishing and ransomware we are offering Healthcare providers free access to our DNS Firewall Threat Feeds until the end of this year.
To help Healthcare providers during these critical times, we are offering free access to our DNS Firewall services until the end of 2020.
Both of our DNS Firewall services block malicious activity by preventing DNS requests from resolving to malicious domains and IP addresses by querying selected datasets. This provides users with automatic mitigation against threats including: phishing, malware, ransomware and botnet C&Cs.
The additional layer of protection at the DNS level gives Security and IT teams the ability to save on valuable resources, and focus on other urgent matters.
Simply click here and complete the form. Please remember to include in the comments section that you are interested in our free DNS service for Healthcare providers.
17 March 2019
When choosing DNS Firewall Threat Feeds its key to ensure you pick the right ones based on the relevant level of protection your business requires, otherwise you could be making things more tricky than they need to be.
1 February 2019
Cyber attacks across the healthcare sector are rampant and show no signs of abating. Security and network teams within this industry have the odds stacked against them; proving that it's crucial to build a multi-faceted security strategy that is smart, both in regards to spend and resources.
14 September 2018
With the ever increasing demands on IT, security and networking teams, tools that reduce workloads, which don't cost the earth, are always welcome. One such tool is DNS Firewall. Find out how it works, and the benefits it provides.