SpamHaus is a global keeper of domain and IP violations that maintains a list of abusive behavior originating from a large variety of gTLDs, ccTLDs, and TLDs.
Exactly how does SpamHaus measure this type of negative performance among domain extensions?
The abusive behavior “score” of domain TLDs is calculated as the ratio of abusive domains that exist in a given TLD, to its total number of active domains.
As of April 2, 2024, the top 3 ccTLDs with the worst reputations for spam operations are:
21,334
Here is the full Top 10 list as a chart, courtesy of SpamHaus:
