trustup[.]center

The domain trustup.center was registered on February 21, 2026 through NiceNIC International Group Co., Limited and currently resolves to the IPv4 address 188.137.228.44, which is assigned to AS211381 Podaon SIA in Germany. The site is reachable over HTTPS using a Let’s Encrypt R13 certificate and returns an HTTP 200 status code. Technical fingerprinting shows the presence of jQuery and the enforcement of HTTP Strict Transport Security (HSTS). The authoritative nameservers are kim.ns.retry.name and kate.ns.retry.name.

According to VirusTotal, three of ninety‑three scanning engines flagged the domain, and it is listed on one external security blocklist. PhishDestroy has also recorded the domain as blocked. A Gridinsoft trust score of 0 out of 100 further indicates a high likelihood of malicious intent. The only visible page element is the title tag displaying the word “Trust,” and no additional branding or target information is disclosed in the available intelligence.

Because the underlying content has not been publicly analysed, the precise phishing lure or credential‑harvesting mechanism remains uncertain. Defenders should add trustup.center to domain‑based deny lists, consider blocking the associated IP range 188.137.228.44/32, and enforce TLS verification to reject self‑signed or improperly issued certificates. Continuous monitoring of DNS queries for the domain and its nameservers is advised, as well as inclusion of the host in network‑level threat‑intel feeds. Organizations using web filtering should ensure the URL is flagged for inspection, and incident‑response teams should be prepared to investigate any credential submissions that may originate from this infrastructure.