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 Blocklist Removal Center. From here you will be able to enter your IP or Domain and begin your request for removal.
Please note that the Project’s Blocklist Removal Center 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.
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 blocklists updated in real-time. 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.
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.
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Posted by The Spamhaus Team on 29 Nov 2017
Netherlands-based ISP XS4ALL is using Spamhaus' DNS Firewall Threat Feeds to provide an improved security service to its customers.
Cyber criminals are keen to abuse someone else’s well-equipped network, so ISP and hosting environments are targeted by malicious actors keen to insert malware and botnets that can infect across a network.
Email filtering and anti-spam measures can block most phishing attempts but there is always the risk that a customer will unwittingly respond and allow access to malware. So there is always a risk of getting infected, or have infections that might spread to others.
The challenge for XS4ALL is to provide protection without impacting the demand for high-volume, high-speed connectivity and give customers a choice of the security profile thatâ€™s right for them.
XS4ALL runs PowerDNS Recursor for its DNS resolution because it has a native implementation to receive an AXFR/IXFR data feed for industry standard Response Policy Zone handling. With the release of version 4.0 of PowerDNS Recursor, XS4ALL was able to configure Response Policy Zones into the resolution process for the first time.
The new 4.0 version has an extra feature which enables active lookup of a configuration for the client that queries the resolvers. This enabled XS4ALL to make DNS Firewall malware filtering optional, with each customer able to chose it as an added security service.
Implementation of DNS Firewall was straightforward given the version of PowerDNS Recursor, the main volume of work required was to configure XS4ALL’s systems to provide this as a customer option.
After a careful checking of a PowerDNS setup with mirrored traffic and reviewing the volumes of suspicious queries, DNS Firewall was made operational as an option to customers. When enabled, customers drastically cut down on malware traffic from links in already downloaded email messages that they clicked on accidentally.
Command & Control beaconing traffic from botnets is also greatly reduced. Even though each beaconing message is very small, a compromised enduser can consume massive amounts of bandwidth when it is used to mount DDoS attacks.
Applied at the DNS level of your infrastructure, these threat feeds automatically stop users from accessing malicious sites including phishing and malware dropper websites.
These threat feeds can be integrated with existing recursive DNS servers, or for those who don’t manage their own DNS, we have a managed service available.
17 March 2019
When choosing DNS Firewall Threat Feeds its key to ensure you pick the right ones based on the relevant level of protection your business requires, otherwise you could be making things more tricky than they need to be.
22 February 2019
When Spamhaus Malware Labs observe a 40% increase in the number of domains that are being registered by cybercriminals to host a botnet command & control (C&C) it’s time to understand where the threats are coming from in the top-level domains (TLDs) space and learn how you can protect against them.
14 September 2018
With the ever increasing demands on IT, security and networking teams, tools that reduce workloads, which don’t cost the earth, are always welcome. One such tool is DNS Firewall. Find out how it works, and the benefits it provides.