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.
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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.
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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.
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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.
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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.
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Spam (SBL), Policy (PBL), Exploits (XBL) and Auth (AuthBL) blocklists allow you to filter email from IPs associated with spam, botnets, and other threats.
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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 Sarah Miller on 25 Jan 2022
As we are constantly looking to expand the breadth of reputational data available via the Spamhaus intelligence API (SIA), we are delighted to announce that you can now access the extended Botnet Controller List (eBCL).
Until recently, our limited access methods restricted how organizations could use our IP and domain reputation data. Our engineers have developed an API that makes it easy to integrate Spamhaus’ intelligence into your existing systems to address this situation.
SIA doesn’t just return a basic binary response as to whether a resource is listed or not; it is enriched with additional metadata providing deeper insights to help speed up investigations and accelerate reporting.
This dataset contains single IPv4 addresses used by miscreants to control infected devices, otherwise known as Botnet Command and Controllers, C&Cs, or C2s.
At its heart, the eBCL is a “drop all traffic” list detailing the worst of the worse. By this, we mean that a network should not try to connect to these IP addresses under any circumstances, nor should it accept inbound traffic from them.
It will come as no surprise that given its specific focus, the eBCL is much smaller in size than that of the extended eXploits Blocklists:
The eBCL contains the following metadata for each listing, where available: ipaddress, botname, seen, firstseen, listed, valid-until, dstport, asn, lat, lon, cc, protocol, urls, domains, samples. See our technical documentation for a detailed explanation of these.
Different organizations will have different use cases for this data. However, here are some ideas our team has come up with on how this data may assist.
Vetting and monitoring IP space
There are numerous situations where it is necessary to monitor or vet IP space:
Where it’s not possible to install the BCL on a router table, you can use the eBCL via SIA to query against incoming and outgoing traffic to block connections to listed Botnet C&Cs.
You can sign up here if you’d like to trial this data via SIA. Alternatively, for those who would like an opportunity to experiment with our data over an extended period, sign up for our free Developer License, which gives six months of access to these datasets without any charge.
This API provides access to multiple datasets containing metadata relating to compromised IP addresses. These IP addresses may be exhibiting compromised behavior, including malware, worm, and trojan infections, and SMTP-specific traffic emitting spam, or cybercriminals are using them to control infected computers – botnet command & controllers.
The breadth of data available via an easily consumable API provides security developers with scores of opportunities.
28 October 2022
Commercial or developer subscribers to any IP datasets via Spamhaus Intelligence API (SIA) will experience improved performance and search capabilities for this service.
14 September 2022
Discover the rich domain-related data points available via this easy-to-consume API and how you can become one of only 30 beta testers.
7 September 2022
Spamhaus & abuse.ch have joined forces to create this Monthly Malware Digest. Using data from abuse.ch's platforms, the report gives an overview of malware campaigns, with insights into malware distribution sites, samples, IOCs & YARA rules.