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IP Blocklist
Check if an IP address appears on known spam, abuse, or threat blocklists.
How to Use
1
Enter IP
Type or paste an IP address, CIDR range, or IP:port into the search field. Multiple IPs can be separated by commas.
2
Check
Click the check button to query multiple threat databases for blocklist entries.
3
Review Results
View blocklist status, threat categories, detection sources, and detailed sensor data.
Key Features
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Multi-Database Check
Check IP addresses against multiple known spam, abuse, and threat blocklists simultaneously.
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VPN & Proxy Detection
Identify VPN, proxy, and Tor exit node usage with optional VPN provider detection.
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Bot & Malware Detection
Detect bots, spiders, spam bots, exploit bots, and malware sources with detailed sensor data.
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Flexible Input
Supports IPv4, IPv6, CIDR notation, IP:port, and comma-separated multiple IP checks.
Frequently Asked Questions
An IP blocklist is a database of IP addresses known to be associated with spam, abuse, malware, or other malicious activity. This tool checks if an IP appears on any of these lists.
IPs are automatically removed from the blocklist after 7 days if no other malicious activity is detected. However, persistent offenders may remain listed indefinitely.
When enabled, the VPN lookup option also checks if the IP belongs to a known public VPN provider. This is useful for identifying users who may be hiding behind VPN services.
Sensors are the individual detection sources that identified the IP as malicious. Each sensor provides the blocklist name and a description of the detection criteria.
Yes, you can enter multiple IP addresses separated by commas. The system will check the first non-bogon address on the list.