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.
Posted by The Spamhaus Team on 12 Feb 2019
The team at Spamhaus Malware Labs were pretty busy last year. Actually, that's an understatement: they detected and blocked a record number of botnet command & control (C&C). Over 10,000 in fact!
Here’s an overview of the malware that botnet C&Cs were associated with, but if you want the full botnet C&C picture download the detailed report here.
As always, the threat landscape was highly dynamic in 2018. While some trends such as remote access tools (RATs) continued to gather momentum, additional ones started to rear their heads, such as CoinMiners.
Credential Stealers: As in 2017, credential stealers were still accounting for the most significant amount of botnet C&C traffic; however there were changes as to which were top of the leader board.
Pony’ held the #1 spot for two years, however in 2018 ‘Loki’ took pole position, having more than doubled the number of unique botnet C&Cs associated with it.
Remote Access Tools (RATs): This type of malware saw a significant increase in 2018, in particular, a Java-based RAT, called JBifrost (aka Adwind).
Back in 2017, we reported that JBifrost was starting to flood the botnet landscape, however, in 2018 we witnessed an explosion in the number of unique botnet C&C listings associated with it. The sheer volume of these listings has placed JBifrost at #2 on our leader board.
Ransomware & e-banking Trojans: Botnet C&Cs associated with both types of malware dropped significantly in 2018.
CoinMiners: Making their first appearance in the Top 20 list last year were CoinMiners. These are malicious pieces of software that silently mine cryptocurrencies, such as Bitcoin and Monero, without the consent or approval of the user. In 2018, we identified 83 botnet C&Cs associated with CoinMiners.
Mining pools: In addition to CoinMiner botnet C&C listings, in 2018 we also issued 156 Spamhaus Block List (SBL) listings for 111 cryptocurrency mining pools that were used by the CoinMiners. Some of these cryptocurrency mining pools appeared to be rogue; however, the majority were legitimate pools that were being abused by CoinMiners.
The Spamhaus Project has tried to approach the responsible hosting providers, asking them to have the offending user(s) of the mining pool suspended, to stop the fraudulent activity. Unfortunately, this was not always possible because some cryptocurrencies, such as Monero, are entirely anonymous, unlike Bitcoin.
The increased threat from CoinMiners is apparent when you view the statistics from users of our DNS Firewall Threat Feeds. These threat feeds are consumed at the DNS level, allowing security teams to automatically block users (blocks/redirects), and IoT devices’ from accessing bad sites.
In April 2018 only 21% of blocks/redirects were for CoinMiner/Cryptoblocker traffic, whereas at the end of last year, in December 2018, CoinMiner redirects accounted for 66% of all blocked/redirected traffic.
It is evident that the botnet C&C landscape underwent some significant changes in 2018. With ‘lean teams’ and ‘lean budgets’ security professionals are caught between a rock and a hard place in attempting to keep on top of the ever-changing threats. Therefore, it’s crucial to identify solutions that are quick to install, ‘set & forget,’ and leverage the best threat intelligence in the industry. In doing so, security & IT teams are enabled to focus on other urgent matters, confident in the knowledge that teams of professional security researchers and investigators are identifying the threats on their behalf.
15 April 2020
The number of botnet Command & Controllers (C&Cs) associated with fraudulent sign-ups, reduced by 57% in Q1 2020, however it isn't all good news. Find out the full details on botnet C&C activity here.
29 January 2018
In 2018, the researchers at Spamhaus Malware Labs detected the highest number of botnet command & controllers (C&C) on record, observing more than 10,000 botnet C&Cs. Find out what was driving that rise.