u21601574.ct.sendgrid.net
Category: Technology
Description of u21601574.ct.sendgrid.net
The domain u21601574.ct.sendgrid.net appears to be a subdomain within SendGrid's infrastructure, which is commonly used for transactional and marketing email delivery. Based on the naming pattern and the parent domain, this host is likely associated with email campaign tracking, click tracking, or related messaging services rather than a standalone consumer-facing website.
SendGrid is a well-known cloud email delivery platform, and subdomains like this are often provisioned for individual customers or campaigns. In practice, such hosts may be used to support links embedded in emails, routing, analytics, or message delivery functions. The domain structure and long registration history suggest it is part of an established service environment rather than a newly created independent web property.
Safety Assessment for u21601574.ct.sendgrid.net
Based on available scan data, no threats were detected at the time of this scan. The domain was not flagged by any of 91 security engines, and the malware scan reported no flagged files, no suspicious external links, and no iframe-related concerns. In addition, the domain was listed as clean across the checked blacklist and threat-database sources.
Other contextual indicators are also consistent with a lower-risk assessment at this time. The domain has been registered for many years, uses a valid SSL certificate, and appears to belong to established email-service infrastructure rather than an ad hoc or recently created site. While any domain can potentially be abused in specific campaigns, there were no clear signs of malware, phishing, or blacklist activity in the provided results.
Based on available scan data, no significant threats were detected at the time of this scan.
Technical Description
The host resolves to an AWS EC2 address in Dublin, Ireland and is served through nginx. It presents a valid SSL/TLS certificate issued by GoDaddy.com, Inc., with expiry in June 2026. The domain uses DNS Made Easy nameservers and has a long registration history through MarkMonitor Inc., a registrar commonly used for enterprise-managed domains.
One minor technical note is that DNSSEC appears to be unsigned, which means DNS responses may not benefit from DNSSEC validation. That does not by itself indicate malicious activity, but it is a modest hardening gap compared with domains that have DNSSEC enabled. No additional technical security concerns were evident from the provided scan data.
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