LOS ANGELES - The Internet Corporation for Assigned Names and Numbers (ICANN) has published the Analysis of Internationalized Domain Names in Reputation Block List Data for the period of October 2022–September 2024. Reputation Block Lists (RBLs) are lists of reported malicious domain usage data from third-party reputation providers. Security systems throughout the Internet use RBLs to block those domain names and prevent malicious activity, a press release stated by ICANN. 

Based on the data in RBLs, this report analyzes the relationship between IDNs under generic top-level domains (gTLDs) and security threats as defined in ICANN's Domain Abuse Activity Reporting (DAAR) project.

Key findings include:

• Ratio of percentage of reported American Standard Code for Information Interchange (ASCII) domain names to percentage of reported IDNs is 4.3 to 1.
• Both reported ASCII domain names and reported IDNs have similar distribution of the security threats across threat types. Spam is the most reported security threat type, followed by phishing.
• The majority of the reported IDNs consist of Latin script (0.33 percent of total Latin IDNs) and Chinese (Han) script (0.29 percent of total Chinese (Han) IDNs).