ICANN has raised concerns over the significant discrepancies in abuse rankings for domain name systems (DNS), highlighting the reliance on different blocklist sources. In a recent analysis, they pointed out that various organizations compile lists ranking top-level domains and registrars according to their abuse rates, but the effectiveness of these lists depends heavily on their data sources.
The findings indicate that commercial reputation blocklists tend to document higher instances of abuse compared to open-source lists, which are typically managed by volunteers. While the top two domains rank consistently across both types of lists, the rest show a stark contrast.
ICANN’s research indicates that these discrepancies are not merely statistical; they carry real implications for the reputations of domain registrars and registries. This can also affect the perceived effectiveness of certain DNS abuse policies.
To address these gaps, ICANN emphasizes the necessity of utilizing a diverse range of blocklists. They suggest that a multi-source approach, including both open-source and commercial blocklists, is crucial. By acknowledging the limitations of the current rankings, stakeholders—including researchers and policymakers—can work towards a more comprehensive and insightful understanding of DNS abuse.
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