Spamhaus Exploits Blocklist (XBL)

The Spamhaus Exploits Blocklist (XBL) tracks IP addresses compromised by malware or third-party exploits for malicious email activity (blacklist).
Summarize with
Check if you are listed on Spamhaus Exploits Blocklist (XBL)
And 143 other blocklists.















What is Spamhaus Exploits Blocklist (XBL)?
The Spamhaus Exploits Blocklist (XBL) is a real-time database of IP addresses that show signs of being compromised by third-party exploits. This blacklist includes machines infected with malware, open proxies, and other trojan-horse exploits. Spamhaus automatically adds an IP to this particular blacklist or blocklist when there is strong evidence suggesting a device using the IP is insecure, compromised, or infected. This is not a list of IPs that intentionally send spam, but rather legitimate IPs that have been hijacked for malicious activities without the owner's knowledge.
To protect its detection methods, Spamhaus does not reveal the exact criteria for a listing. However, some common behaviors that can result in an IP address being added to this blocklist include:
- The presence of malware on a device, often downloaded inadvertently.
- Security vulnerabilities on devices that permit unauthorized access and malicious activity.
- The use of 'Free VPN' applications that use the device as a proxy for unknown third parties.
- Participation in brute force attacks on various services.
- Rapid changes in identity during attempts to deliver mail.
- Frequent connections to sinkholes in a pattern consistent with malware activity.
- Attempts to relay email using stolen or illegitimately obtained credentials.
What's the impact of being listed on Spamhaus Exploits Blocklist (XBL)?
The impact of being on the Spamhaus Exploits Blocklist (XBL) is high. A listing on this blacklist will cause significant email delivery problems. Many major email providers, corporations, and internet service providers worldwide use this blocklist to filter incoming email. If your sending IP address is listed, your emails are very likely to be rejected or sent directly to the spam folder, severely damaging your sender reputation and email marketing effectiveness.
Who runs Spamhaus Exploits Blocklist (XBL)?
The Spamhaus Exploits Blocklist (XBL) is operated by the Spamhaus Project, a non-profit organization founded by Steve Linford in 1998. Based in Andorra, Spamhaus is a leading authority on IP and domain reputation. For over two decades, its global team of researchers has worked to track internet identifiers associated with spam, phishing, malware, and other threats.
The organization's mission is to enhance trust and safety across the internet. It provides free blocklist (blacklist) datasets to the public, protecting over 4.5 billion users. Spamhaus collaborates with the broader internet community, including law enforcement agencies, to combat cybercrime and assist organizations in securing their networks.
How do I get removed and delisted from Spamhaus Exploits Blocklist (XBL)?
Before requesting removal, it's important to know that XBL listings are often temporary and can be removed automatically. Once the malicious activity from the compromised device or IP address ceases, the listing will typically expire on its own after a period of time. Your first step should always be to identify and resolve the underlying security issue causing the listing. This could involve running antivirus scans, securing your network, or removing malicious software.
After you have fixed the problem, you can check your IP's status and request delisting. The only place to handle a removal from this blacklist is through the official Spamhaus checker. You can visit the IP and Domain Reputation Checker to look up your IP address and follow the instructions for removal. No removal requests are processed through email or any other channel.
Other Spamhaus blocklists
Spamhaus Blocklist (SBL)
Organization
Spamhaus
Zone
sbl.dq.spamhaus.net
Type
IP
Impact
High
Delisting
Manual
Spamhaus Domain Blocklist (DBL)
Organization
Spamhaus
Zone
dbl.dq.spamhaus.net
Type
Domain
Impact
High
Delisting
Manual
Spamhaus Policy Blocklist (PBL)
Organization
Spamhaus
Zone
pbl.dq.spamhaus.net
Type
IP
Impact
High
Delisting
Manual
Spamhaus ZEN Blocklist
Organization
Spamhaus
Zone
zen.dq.spamhaus.net
Type
IP
Impact
High
Delisting
Manual
Spamhaus Zero Reputation Domain (ZRD)
Organization
Spamhaus
Zone
zrd.dq.spamhaus.net
Type
Domain
Impact
Medium
Delisting
Automatic
