Blacklist in detail:

China Anti-Spam Alliance - China CBL+CDL IPv4

China Anti-Spam Alliance begin publish blacklist service from 2003 year. Include CBL CDL CBL+ and CBL-.

CBL is china black ip list

CDL is china dynamic ip list

CBL+ is include CBL and CDL

Example Response Message
Mail from XXX.XXX.XXX.XXX refused, see
Last Accessed
2018-09-19 02:05 (UTC) 
Last Checked
When we last checked 2 hours, 44 minutes ago it was working.
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History for (Last 10 Days)

We keep some statistics on blacklists. Below is the graph for We test blacklists by asking them to respond to known IP's that are blacklisted and known IP's that can't be blacklisted. Not every blacklist has such IP's, we test them with what is possible. We keep if we get any response or error messages and the response duration. Lower response times are better. These statistics may be useful for email server administrators to pick which blacklist to use.

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