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.
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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.
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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.
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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.
abuse.ch Real Time Feeds - coming soon
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View the geolocation, hosting network, malware names associated with each detection, and other critical data points.
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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.
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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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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 23 Aug 2022
Kentik are a heavy hitter in the network intelligence space, supporting companies like Sky, Tesla, Spotify. To keep a network safe though, it's not enough to only have visibility into internal systems. You need reliable, external threat intelligence. Enter Spamhaus' IP data.
Kentik provides network intelligence at scale. That means helping some of the biggest global enterprises and service providers keep their networks operational and safe. With easy-to-use, real time intelligence, Kentik provides monitoring and visibility, analytics, planning and peering, anomaly detection, and DDoS defense.
Companies like Sky, Dropbox, Spotify, and Tesla trust Kentik’s platform to reliably answer any question about their network, in one place, at any time. A one-stop shop to keep networks operational and business moving.
Customers securely send over continuous streams of traffic data. This includes data from their routers and switches, telemetry logs, and Border Gateway Protocol data. Kentik then enriches the data with information about infrastructure, apps, routing, and more. From this, Kentik generate their AI-driven insights, available to their customers via their Network Observability Cloud platform.
The Network Observability Cloud product was initially built to observe networks and reactively answer questions. A valuable offering with most appliances being restricted in the data they can keep and monitor.
The trouble is, when you’re only looking at your network, you don’t see the external threats that could impact you in the future, or gain the full picture of threats that have affected you already.
Kentik could observe an attack was taking place and mitigate, but the platform could not expose the bigger picture. It could not identify where the attack was coming from, if it was originating from a botnet command and controller (C&C), or what specific devices were communicating with a botnet C&C.
To be better protected, network engineers needed intelligence on what was happening beyond their internal systems; Kentik needed to deliver external threat intelligence.
For Kentik, finding an external data provider was reasonably straightforward. The Co-Founders, Avi Freedman and Ian Pye, have exemplary industry experience and a strong understanding of the intelligence landscape – Avi has been in the industry for over 30 years after setting up the first ISP in Philadelphia, and Ian was the first employee at Cloudflare.
With their knowledge, “Spamhaus was the obvious choice. You have a great reputation for reliable and consistent data. We know a number of your expert researchers and, from our customers, of your super low false-positive rate,” shared Avi.
Kentik trialed the Botnet Controller List (BCL) and extended eXploits Blocklist (eXBL). After a successful trial, the data was put into production as part of their Network Observability Cloud product in 2016.
The Botnet Controller List (BCL) allows customers to assess if they have any hosts on their network that have been compromised and are communicating with a C&C server. Equally, the extended eXploits Blocklist (eXBL) allows customers to see the IPs of compromised devices on their network. The eXBL lists compromises resulting from malware, Trojan or worm infections, devices controlled by botnets command and controllers (C&Cs), and third-party exploits, such as open proxies.
Kentik’s alerting functionality. Users can wait for a scheduled report… but for those where speed is of the essence, the tool can be configured to send an email or even Slack notification whenever a new host starts talking to a C&C server. Customers can then immediately delve deeper to see the specific IPs that have contacted the botnet C&C. This knowledge gives the customer the specific insight to take instant action and minimize the impact of compromise.
A seriously simple, user-friendly method for proactive network protection that last month stopped thousands of attacks from happening.
Happy customers. It’s as simple as that. The team is passionate about network maintenance and security. Knowing their customers have a product that truly delivers and makes the internet a safer place is a job well done. That’s why they include this functionality as part of their standard package. Brilliant job, team Kentik – we can’t wait to see what’s next!
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.
26 July 2022
This quarter botnet C&C activity reduced slightly, and operators within the LatAm region appeared to be getting control of newly observed botnet C&C abuse, but two well-known global network operators struggled to get to grips with continuing abuse.
7 July 2022
If you own at least one ASN and want visibility of your IPs' reputation across your network, we recommend you find out more about the Spamhaus Reputation Portal.