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 Blocklist Removal Center. From here you will be able to enter your IP or Domain and begin your request for removal.
Please note that the Project’s Blocklist Removal Center 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.
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 blocklists updated in real-time. 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.
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 out who we work with and how you can become a Spamhaus Partner.
Discover a wide range of blog posts, case studies and reports.
Commonly asked questions about Spamhaus products and processes.
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 May 2020
IP & Domain Blocklists (DNSBLs) are very effective at filtering malicious emails. However, they do have one big limitation: How do you block an email sent from a compromised account at Gmail, Hotmail or any other large email service provider (ESP)? Hash blocklists are the answer.
It's a well-known fact that filtering emails using IP blocklists (DNSBLs) blocks the vast majority of malicious emails. It's effective and economical, using minimal computational power. So why should you also use domain and hash blocklists for filtering?
5 May 2020
Instances of domain hijacking are on the increase, and the fall out for victims can be significant. Join ISC and Matt Sith, from Spamhaus to discover how big a problem domain hijacking is and learn how to protect against it.
15 April 2020
The number of botnet Command & Controllers (C&Cs) associated with fraudulent sign-ups, reduced by 57% in Q1 2020, however it isn't all good news. Find out the full details on botnet C&C activity here.
3 April 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.
24 January 2020
Spamhaus Malware Labs identified a 71.5% increase in the number of botnet command & controllers in 2019. Find out who and what was driving that increase.
29 October 2019
As IT budgets and resources are squeezed it’s understandable to shop around, be it for hardware, software, or threat intelligence data, for that matter. But beware…not all email blocklists (DNSBLs) are equal.
In this Osterman Report, over 200 companies were interviewed to find out how they were utilizing threat intelligence data. Compare yourself to the market place, and find out how others are protecting themselves.
In this Osterman Report, over 200 companies were interviewed to find out how they were utilizing threat intelligence data. Here are the results.