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.
Posted by on 23 May 2022
We’re thrilled to announce that Spamhaus is now an official member of the Forum of Incident Responders and Security Teams (FIRST). As part of this knowledgable and highly regarded network, we look forward to helping influence positive change, sharing our insight more widely, and supporting the FIRST community in making the internet a safer place. Thank you, FIRST for this opportunity.
FIRST is one of the silent heroes of the internet. Fundamentally, it’s a peer-to-peer governed network who work collaboratively to make the internet safer.
FIRST focuses on responding to incidents that have an impact at a country, or region, level and influence change through “cooperation and coordination in incident prevention, to stimulate rapid reaction to incidents, and to promote information sharing”.
By fostering an industry-leading global community, FIRST plays a significant role in keeping the internet safe.
As the saying goes, knowledge is power. Never more accurate than in incident response and security! With that, FIRST concentrate on sharing trusted intelligence in a variety ways, not limited to:
While we have provided intelligence to FIRST for a long time, this new level of partnership is significant. In the words of our Industry Liaison, Matt Stith, “The FIRST organization provides Spamhaus with opportunities to collaborate with an international group of teams that are dedicated to the same mission of making the internet a safer place.”
Being a FIRST member will allow us to share our analysis and expertise more widely. We can provide support in a far more accessible way. And we can strengthen relationships to enhance our research and threat hunting capabilities.
We will be joining the FIRST Dublin event taking place from June 26th to understand first-hand the community’s challenges and how we can support. Matt shared, “I am excited to have conversations in person to really refine how we can combat abuse, in its many forms, and contribute to the FIRST organization to further that undertaking.”
Later this year, we will also be launching a new tool, the Reputation Portal, which we know will be a game-changer for the community in monitoring and tackling abuse. For more information, you can find it here.
26 July 2022
This quarter botnet C&C activity reduced slightly, and operators within the LatAm region appeared to be getting control of newly observed botnet C&C abuse, but two well-known global network operators struggled to get to grips with continuing abuse.
7 July 2022
If you own at least one ASN and want visibility of your IPs' reputation across your network, we recommend you find out more about the Spamhaus Reputation Portal.
25 May 2022
In our experience, residential proxies are an often overlooked security threat; one that can be very difficult to remediate for the end user who -in our experience- is entirely unaware of its existence.