This URL is a subdomain of the European Commission's official domain (ec.europa.eu), which normally inspires trust. But the specific endpoint you're looking at — comm-ewcms-commission.cdn.dhs.tech.ec.europa.eu — is not functioning as a legitimate government service. The site fails to establish a secure connection, returning a 403 error and a TLS handshake failure. For any government-facing site, a working HTTPS connection is a basic requirement; its absence here is a major warning sign.
If you landed on this page, it's likely a broken redirect or a misconfigured CDN cache. The lack of a web archive history and the absence of any contact or about information on this subdomain mean there's no way to verify who is responsible for this exact address. While the parent domain is legitimate, this specific subdomain should not be trusted for any form of data entry or interaction. The safest course is to treat it as suspicious and navigate away.