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.
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.
Access via a simple API or real time feed to enrich data sources and provide rapid insight into DNS infrastructure.
Spamhaus’ Passive DNS data checks DNS infrastructure connections and identifies which have historic links to one another. This allows investigators to locate new threats from a single point and block related menaces.
This is anonymized DNS query data, collected from recursive DNS servers around the world. A number of different record types are collected including: IPs, domains, hosts, name servers, and canonical names. Our Passive DNS database shows the connections between these different internet records.
The Spamhaus team of researchers uses this passive DNS data on a daily basis to assist with their investigations and research.
A multitude of roles can benefit from using Passive DNS including:
Find out how fTLD, the registry behind .bank and .insurance utilize Passive DNS data to ensure they have some of the most secure top-level domains in the industry.
API – for security vendors and expert users who wish to integrate our raw datasets with their own software and security platforms.
Continuous data feed – for inclusion into third-party security products and organizations, including those of law enforcement agencies, who wish to continuously monitor live recursive DNS traffic to aid the identification of new malicious domains, emerging threats, or cybercriminal trends.
Searching real time and historic Passive DNS data enables you to undertake various research tasks:
Datasets to reduce investigation times and provide additional insights for security professionals. These include enhanced eXploits blocklist and Passive DNS data.
Trial the "PRO" subscription to find out the value of passive DNS data.
25 May 2022
To make way for a new free Passive DNS search tool, Spamhaus will be deprecating its free passive DNS service, which will no longer be available as of June 24th, 2022.
30 March 2022
fTLD, the registry behind .bank, turns to Passive DNS to ease the burden of compliance.
23 March 2022
Here, fTLD, the registry for .bank and .insurance top-level domains (TLDs), provides their view of how a TLD can make it simple for users to trust their interactions with websites.