us-en-coin-base-sign-inn[.]pages[.]dev

Analysis as of July 25, 2026 indicates that the domain us-en-coin-base-sign-inn.pages.dev was registered on February 21, 2026 through Cloudflare, Inc. The domain resolves to the Cloudflare edge address 172.66.47.159, which is associated with AS13335 (Cloudflare, Inc.) and located in the United States. The authoritative nameservers are surina.ns.cloudflare.com and dan.ns.cloudflare.com, confirming that the infrastructure is fully hosted on Cloudflare's network. The site presented a page title of “Suspected phishing site | Cloudflare” and returned an HTTP 403 status code, indicating that access is currently denied. The TLS certificate is issued by Google Trust Services under the WE1 intermediate, and the connection supports HSTS and HTTP/3. The domain is explicitly linked to a Coinbase impersonation campaign and is categorized as a crypto‑scam.

Google Safe Browsing classifies the URL as a social‑engineering threat, and VirusTotal recorded 13 detections out of 93 scanned security vendors, reinforcing the malicious rating. Independent reputation services reflect the same assessment: Gridinsoft assigns a trust score of 0 / 100, Scamadviser a score of 1 / 100, and the domain appears on at least one security blocklist. PhishDestroy has also listed the site as blocked. No additional intelligence such as OTX identifiers was available.

Given the high‑risk classification, defenders should immediately add us‑en‑coin‑base‑sign‑inn.pages.dev to network and DNS block lists, enforce outbound filtering for the resolved IP address 172.66.47.159, and monitor for any new subdomains that resolve to the same Cloudflare edge network. Continuous re‑checking of VirusTotal, Google Safe Browsing, and relevant blocklists is advised, as the threat actor may reactivate the domain or launch similar clones.