eur04.safelinks.protection.outlook.com
Category: Misc
Description of eur04.safelinks.protection.outlook.com
This subdomain appears to be part of Microsoft's Outlook and Office email security infrastructure. The "safelinks.protection.outlook.com" hostname is commonly associated with link-rewriting and click-protection features used in business email environments, where URLs in messages may be checked or redirected through a protective service before the user reaches the final destination.
Based on the domain structure, category labels, and hosting details, this address appears to support enterprise collaboration and email protection rather than operate as a standalone public-facing content website. It is likely operated within Microsoft's cloud environment and used as part of Outlook-related security and productivity services for organizations.
Safety Assessment for eur04.safelinks.protection.outlook.com
The available scan data shows no detections from 0 out of 91 security engines, and the malware scan reported no flagged files, no flagged links, and no flagged iframes at the time of this scan. In addition, the domain was not listed by the checked threat databases, and the blacklist results were clean based on the provided data.
Several contextual signals also support a low-risk assessment: the domain is very old, uses a signed DNSSEC configuration, has a valid certificate issued to Microsoft, and is hosted on Microsoft's own infrastructure. The categorization data aligns with business, collaboration, and office-related use rather than suspicious or deceptive activity. Based on available data, no threats were detected at the time of this scan.
Technical Description
The domain uses a valid SSL/TLS certificate associated with Microsoft Corporation, with expiry in late 2026. It resolves to an IP address hosted by Microsoft and serves responses through Microsoft-HTTPAPI/2.0, which is consistent with a large cloud-operated service. The nameservers are delegated to Azure DNS, further suggesting integration with Microsoft's managed infrastructure.
DNSSEC is enabled and signed, which may help reduce certain DNS tampering risks. No technical security concerns were indicated in the provided scan results, and the infrastructure details appear consistent with a legitimate enterprise service endpoint at the time of this scan.
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