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.
abuse.ch Real Time Feeds - coming soon
Actionable data signals on cyber threats, with a focus on malware and botnets, to strengthen threat investigations, detections, and help prevent data breaches.
Integration | MDaemon
Block over 99% of email-borne threats with Spamhaus’ real time DNS blocklists and MDaemon® Email Server.
Integration | Halon
Safeguard your email stream using Spamhaus’ real time DNS blocklists and Halon’s secure email infrastructure.
Integration | Messageware
Enhance Microsoft Exchange protection by blocking malicious IP addresses from connecting to your on-premise server in real time.
A wide range of datasets, providing multiple layers of protection. They can be plugged directly into your existing hardware, making them an affordable choice.
Exploits Dataset Statistics
View the geolocation, hosting network, malware names associated with each detection, and other critical data points.
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.
abuse.ch Threat Intelligence Feeds – coming soon
URLhaus, MalwareBazaar, ThreatFox, YARAify, Feodo Tracker and Sandnet enrich CTI feeds and support vulnerability mangement.
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Spamhaus’ insight into malware, botnet C&Cs, and the domain reputation landscape.
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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 28 Apr 2023
We’re excited to announce that we have partnered with Messageware - a market leader in securing, enhancing, and customizing Microsoft Exchange Servers. This partnership, together with our commercial partner, SecurityZones, integrates Spamhaus’ real time threat intelligence via Data Query Service (DQS) into Messageware’s Exchange Protocol Guard (EPG) product, to better protect users and networks alike.
Ordinarily, DQS is integrated with open-source tools or existing anti-spam platforms to block up to 99% of malicious emails, as part of a cost-effective solution for spam prevention. Yet, Messageware has stepped outside the box, broadening the horizons for how this data can protect users.
By querying IP addresses in the Spamhaus DQS datasets, users can verify the legitimacy of connection requests to Microsoft Exchange Servers.
Messageware’s EPG service is an integrated solution that provides advanced login intelligence and control for Microsoft Exchange Servers. It monitors potential risks from attacks, giving email administrators and engineers more control to:
By integrating Spamhaus’ Data Query Service, Messageware has developed one of its biggest security updates to enhance EPG further, blocking devices and IP addresses in real time that are:
Messageware recently shared a story from one of their users, when trialling the solution in Beta phase:
A C-Level executive called their IT Support team as they were not able to connect to email. After reviewing the EPG data, it was determined that the executive’s internet IP had been placed on a Spamhaus blocklist, meaning the connection was being rejected.
The reason for the IP being listed? During a holiday period, malware on a personal device had been accidentally downloaded and went undetected within the home network. After a few malware scans and Internet Service Provider updates later, both were safe & fully operational again.
The executive was extremely grateful that his malware-infected network had been blocked from connecting to the corporate network, preventing further damage.
We asked Mark Rotman, Messageware’s CEO, about the impact of the collaboration,
“Messageware is excited to bring this newly combined technology to market. Adding the real time Spamhaus threat data feeds significantly increases our ability to detect and mitigate threats that are constantly targeting Microsoft Exchange Servers.”
Similarly, Arnie Bjorklund, CEO of SecurityZones shared:
“It’s exciting to see Spamhaus’ data used in a new, and innovative way. Users are already seeing the impact this collaboration is having, which we’re thrilled about. We look forward to further strengthening the partnership and product with Messageware.”
We’re delighted to be collaborating with the Messageware and SecurityZones teams to create more robust protection for Messageware customers – keeping both users and networks safe. We look forward to hearing more stories, like that of the C-level executive above, on how the solution is creating a safer online experience.
Learn more about the integration here. Alternatively, whether you’re already using Messageware’s products, or would simply like to find out more, click here to contact Messageware directly.
12 April 2023
Botnet C&C operators continued to escalate in Q1. Spamhaus researchers saw a 23% increase in newly observed botnet C&C servers - with Cobalt Strike and Quakbot ever-present. Get all the latest insights, including the rise in popularity of credential stealer RecordBreaker in this report.
2 February 2023
Recently, researchers have witnessed a massive spike affecting famous brands, with multiple malware being utilized. This is not “the norm”. Here’s what researchers are observing and a theory on this tsunami of abuse.
15 December 2022
Downloading a free application and installing it on an internet-connected device can lead to you not being able to send email. This is because some apps allow third parties to access your device without your knowledge. These third parties then use your network connection for malicious purposes, causing your IP address to be listed as unsafe.