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.
data points analyzed 24/7
years of experience
users protected every day
The established authority on reputation data, Spamhaus is uniquely placed in the industry with our strong ethics, impartiality, and quality of actionable data.
Our focus is to help organizations protect themselves from phishing, botnets, malware, and spam by creating best-in-class datasets that list potential threats.
With over two decades of experience, we have a deep understanding of the rapidly changing threat landscape. This experience helps us to protect some of the biggest brands on the planet.
The data is easy to access and a great benefit for us. We can push as much traffic as we need towards Spamhaus, and we know it’s going to work. We don’t have to worry about scale either.
Deepak Prabhakara, Founding Engineer and CTO, RedSift
We gather big data
Our global data partners share vast amounts of data, providing visibility into potentially malicious activity across the internet. These trusted partnerships are varied, from government organizations, leading internet providers to specialized researchers, honeypots and beyond.
Identify malicious behaviour
We then assess the data for malicious IPs, domains and files. This is done by our hand-picked team of researchers, who apply machine learning, heuristics and manual investigations. The data is assess against pre-defined policies created with the wider internet community.
And create reliable threat intel
Where abuse is detected, the data is added to the relevant dataset(s) as a listing. Datasets vary - some are binary and others include rich metadata. With simple integration into your current infrastructure, you gain protection and insight without additional hardware or license costs.
We remain an independent business, allowing us to focus on doing good for the internet community without external pressures.
The most experienced researchers, handpicked from across the world, are investigating on your behalf 24/7 to identify threats.
Our datasets can be delivered in real time. As soon as our researchers have observed and listed a threat, you are protected.
Our mission is to make the world, and more specifically the internet, a safer place.
Simon Forster, CEO, Spamhaus
Our partners provide trusted, local support to help you get the most from Spamhaus’ data. Find a partner that will best support your business' needs.
Spamhaus is recognised as the industry leader for IP and domain reputation data - partner with the best by joining the Spamhaus Partner ecosystem.
If you’d like to understand more about Spamhaus’ data and products, contact us for more information.