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.
Find out more about us.
Learn more about Spamhaus; who we are, and what we do.
Find a partner
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 The Spamhaus Team on 15 Feb 2022
There is no shortcut to successful email deliverability. No matter what services you see advertised in the marketplace, offering that “special deliverability elixir’… don’t be scammed. In a nutshell, you need to consistently send correctly authenticated, carefully targeted emails to an engaged audience.
Meticulously adhering to email best practices will lead to excellent IP address and domain reputation, and consequently, excellent email reputation. Consider this to be your ultimate goal. Marketers should repeat this as a mantra:
The definition of reputation is “The general opinion or judgment of the public about a person or thing.” In email, reputation is a shorthand way of saying, “how recipients reacted to mail you’ve sent in the past predicts how they will react to mail you send in the future.” Good reputation means that recipients like your mail. Many email filters use “reputation” as one piece of their decision-making process.
We’ll be taking a deep dive into each of these areas through this guide, arming you with the knowledge to pave your way to successful email delivery, starting off with a look at how email reputation works.
12 July 2022
Email authentication has always had its challenges but with the advent of BIMI, users and brands alike will be better protected when engaging with email. Fredrik Poller from Halon brings you up-to-speed on the latest authentication method.
13 May 2022
Change.org's, Alice Cornell, Director of Email Deliverability, shares some true gems of real-world experience in email deliverability and explains how change.org achieved consistent inbox placement once they got the basics nailed down.
15 February 2022
Whether it’s personal, business, or email, reputation must be earned. Here's a look at why reputation matters when it comes to email and what you need to be doing to improve it.