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)
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 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.
The Blocklist Tester
A tool to help you check if your servers are correctly configured to use Spamhaus DNSBLs.
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.
Find a wealth of threat intelligence related content here including blog posts, reports and case studies.
17 May 2022
28 April 2022
Here’s a cautionary tale to anyone and everyone who uses email. The learning is simple: Always be vigilant, especially if its content asks you to provide personal information or click on links and download files.
18 May 2022
Desideriamo informare tutti i clienti di LibraEsva che utilizzano le liste di blocco legacy gratuite di Spamhaus, disponibili su spamhaus.org (ad es. con query in “zen.spamhaus.org”), che questo servizio non sarà più disponibile a partire dal 1° giugno 2022.
Expand your expertise with our Know How series, aimed at filling in knowledge-gaps & helping you achieve consistent email deliverability.
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.
12 May 2022
Email software provider, Constant Contact, has a duty of care to their customers and email recipients alike to prevent malicious behavior via outbound email. See how they’re using our domain data to tackle this.
26 April 2022
Spamhaus' commercial customers now have easy access to our IP and domain Reputation Checker via the Customer Portal.
20 April 2022
It might've been a modest increase in new botnet C&Cs this quarter, but the offering of freebie services are attracting a load of badness and the LatAm region continues to struggle with abuse. Get all the latest insights in this quarter's report.
1 April 2022
If you've been using Spamhaus Project's free DNSBLs you need to be aware this is a legacy service. With an easy config change you could be getting more value from the Spamhaus data.
30 March 2022
fTLD, the registry behind .bank, turns to Passive DNS to ease the burden of compliance.