coin-basemainnet[.]pages[.]dev

The domain coin-basemainnet.pages.dev was observed as part of a high‑risk brand‑impersonation campaign targeting Coinbase. The site was created on 21 February 2026 and is registered through Cloudflare, Inc., using the nameservers elenaor.ns.cloudflare.com and art.ns.cloudflare.com. DNS resolution points to IP 188.114.97.3, an address owned by AS13335 Cloudflare, Inc. in the United States. The TLS certificate presented is issued by Google Trust Services under the WE1 root, indicating a valid HTTPS endpoint despite the malicious intent. An HTTP request returns a 403 status code and the page title is “Suspected phishing site | Cloudflare,” which suggests that Cloudflare’s automated abuse mitigation has already flagged the content.

Multiple external reputation sources corroborate the malicious nature of the domain. Google Safe Browsing classifies it as a social‑engineering threat, and VirusTotal records 14 detections out of 93 scanned security vendors. The domain is listed on at least one public blocklist and has been actively blocked by the PhishDestroy service. Gridinsoft assigns a trust score of 0 / 100, reinforcing the low credibility assessment. Detected technologies include HSTS, HTTP/3, and the Cloudflare edge platform, all of which are typical for fast‑flux or CDN‑hosted phishing infrastructure.

The available evidence does not disclose the exact content of the landing page beyond the generic “Suspected phishing site” title, and no screenshots or HTML snapshots have been released. Consequently, the specific tactics used to lure Coinbase users—such as credential‑stealing forms or malicious redirects—remain unknown. Defenders should therefore treat any traffic to coin-basemainnet.pages.dev as hostile. Recommended mitigations include adding the domain to internal blocklists, configuring web‑proxy filters to drop HTTP/HTTPS requests to the host, and monitoring for any outbound connections to the associated IP address.