coinbase-en-extnsion[.]pages[.]dev

Analysis of the domain coinbase-en-extnsion.pages.dev indicates a confirmed phishing infrastructure targeting Coinbase users, classified as a crypto scam. The domain was registered on February 21, 2026, through Cloudflare, Inc., and is hosted on Cloudflare’s network (AS13335) with an IP resolution of 172.66.44.244, located in the United States. The site is currently offline, returning an HTTP 403 status, and is flagged by Cloudflare’s internal systems with the page title 'Suspected phishing site | Cloudflare.' This aligns with Google Safe Browsing’s classification of the domain as engaging in social engineering, and it appears on at least one security blocklist (PhishDestroy).

Infrastructure analysis reveals the use of Cloudflare nameservers (zainab.ns.cloudflare.com and carl.ns.cloudflare.com), HTTP/3, and HSTS, alongside an SSL certificate issued by Google Trust Services (WE1). Detection engines on VirusTotal flagged the domain as malicious, with 14 of 93 security vendors identifying it as phishing-related. Gridinsoft assigns a trust score of 0/100, further corroborating its high-risk status.

While the exact content and functionality of the site remain unconfirmed due to its offline status, the available evidence—including the domain name structure, brand impersonation of Coinbase, and detection by multiple security vendors—supports its classification as a crypto-focused phishing operation. Defenders should treat this domain as compromised and ensure it is blocked at the network and endpoint levels. Given its registration date and hosting on Cloudflare Pages, similar domains may emerge; monitoring for variations in the 'coinbase-en' prefix or '.pages.dev' subdomains is recommended.