No Security Risks Detected
This domain appears to be safe and secure
100%
Score
Disclaimer: This assessment is based on automated analysis of publicly available information. Results are for informational purposes only. For critical applications, consult security professionals.
Scan Information
Last checked:January 6, 2026 21:09:27
Target URL:https://sefn.asia/
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Page Information
Target URL
https://sefn.asia/
Page Title
sefn.asia | 521: Web server is down
Status
Active
Host Information
Domain
sefn.asia
Server
cloudflare
Country
United States
IP Address
172.67.166.20
ASN Information
13335
CLOUDFLARENET
Technologies
Cloudflare
CDN
HTTP/3
Miscellaneous
SSL Certificate
HTTPS Enabled
Secure
Certificate Issuer
N/A
Valid From
2026-01-05 21:09:30
Valid Until
2027-01-06 21:09:30
Subject Name
sefn.asia
Performance Statistics
8
Total Requests
1
Domains
1
IP Addresses
24.72 KB
Transfer Size
Content Size26.45 KB
HTTP Headers
CF-RAY
9b9e3264df1a70f0-SJC
Cache-Control
private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Connection
keep-alive
Content-Length
6958
Content-Type
text/html; charset=UTF-8
Date
Tue, 06 Jan 2026 21:09:31 GMT
Expires
Thu, 01 Jan 1970 00:00:01 GMT
Referrer-Policy
same-origin
Server
cloudflare
Server-Timing
cfEdge;dur=22,cfOrigin;dur=0
X-Frame-Options
SAMEORIGIN
alt-svc
h3=":443"; ma=86400
12 headers detected
Technology Stack Analysis
Cloudflare
CDN
Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
HTTP/3
Miscellaneous
HTTP/3 is the third major version of the Hypertext Transfer Protocol used to exchange information on the World Wide Web.
External Links 1
Additional troubleshooting information
developers.cloudflare.com
Target URL
https://developers.cloudflare.com/support/troubleshooting/http-status-codes/cloudflare-5xx-errors/error-521/
Requested Domains 1
sefn.asia
Apex domain
No category information available