mailservers31-coinbase[.]online

The domain mailservers31-coinbase.online is actively engaged in brand impersonation targeting Coinbase, a cryptocurrency exchange platform. Analysis indicates the site is designed to deceive users into believing they are interacting with legitimate Coinbase services, likely to harvest credentials or facilitate unauthorized transactions. The domain remains operational as of the latest verification. Infrastructure analysis reveals the domain was registered on December 14, 2025, through Dynadot LLC. It resolves to the IP address 199.59.243.228, hosted on infrastructure belonging to Amazon.com, Inc. (AS16509). The domain is flagged by 18 of 95 security vendors on VirusTotal, and it appears on at least one security blocklist. Notably, the domain lacks an SSL certificate, a common red flag for fraudulent sites. The page title matches the domain name, further indicating a lack of legitimate branding or content. Current status confirms the domain remains active and poses an elevated risk to users. Organizations and individuals are advised to block the domain at the network level and update endpoint protection rules to prevent access. Users who may have interacted with the site should immediately reset credentials for Coinbase and any associated accounts, enable multi-factor authentication, and monitor for unauthorized transactions. Security teams should treat this domain as malicious and prioritize its inclusion in threat intelligence feeds.