IP Blacklist Check
Check a public IPv4 address against SpamCop’s email blocklist.
This tool checks one source: SpamCop SCBL. A result applies only to that list at the time of the check. It is not a complete security assessment, and an unlisted address is not necessarily safe.
SpamCop lists addresses associated with reported email activity. Listings can be mistaken or change quickly. Read the source’s guidance before making a decision. IPv6 checks are currently unsupported by this tool.
A listing names an address, not always one household. Find the ISP for that IP address to see the registered network, or find out your own ISP if you are checking the connection you are on. A blocklist hit is not a record of ordinary browsing — what your ISP can see is a different question.
Many customers can share one public IPv4. Read what CGNAT and a shared public IP mean, and how to tell if you are behind CGNAT, before you treat a listed address as a single home connection.