tuncao[.]com

On July 22, 2026, analysts observed that the domain tuncao.com was registered on March 14, 2026 through Gname.com Pte. Ltd. The domain resolves to the IP address 172.67.197.57, which belongs to AS13335 Cloudflare, Inc. and is geolocated in the United States. Its authoritative nameservers are diana.ns.cloudflare.com and malcolm.ns.cloudflare.com, indicating that the infrastructure is fully provisioned behind Cloudflare’s network. The site serves an SSL certificate issued by Google Trust Services under the WE1 label, and Cloudflare technologies such as Browser Insights and HTTP/3 are detected. A simple HTTP request returns the page title "Just a moment...", and no additional content has been captured.

The domain has been listed on a single security blocklist and is actively blocked by PhishDestroy. VirusTotal analysis shows that one of ninety‑four security vendors flagged the domain, providing an early indication of malicious intent. Current operational status is reported as offline, but the historical presence on blocklists and the single vendor detection suggest that the domain was used for generic phishing activities.

Uncertainty remains regarding the exact phishing campaign content, target brand, or victim interaction flow, as no page payload or login form has been publicly disclosed. Defenders should continue to block traffic to tuncao.com and its resolving IP, update intrusion detection signatures with the observed SSL fingerprint and Cloudflare nameserver pattern, and monitor for any resurgence of the domain in future registries. Correlating internal logs for outbound connections to 172.67.197.57 may reveal compromised hosts, and threat‑intel platforms should retain this indicator for at least 90 days to capture potential reuse.