SpamCop.net - SpamCop FAQ: How can I check if an IP is on the list?

How can I check if an IP is on the list?

If you want to use the list manually, or from custom software, you should instruct your system to do a dns query for the information. For example, if you want to check if 1.2.3.4 is on the blocklist, you might type this at the command-line:

nslookup 4.3.2.1.bl.spamcop.net

If you get back an IP address (typically 127.0.0.2), then the IP you asked about is listed. If you get back a non-existant message, then the IP you asked about is not listed.

"nslookup" is just the most common method for looking up a hostname. Your system may have another name for it. Other common names are "host" and "dig".

Alternatively, you can look up an IP address on the web lookup form .
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