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:August 12, 2025 05:16:03
Target URL:https://hfbackend.site/
Scan Complete
Refresh page after 10 minutes
for updated results
Page Information
Target URL
https://hfbackend.site/
Page Title
hfbackend.site | 521: Web server is down
Status
Active
Host Information
Domain
hfbackend.site
Server
cloudflare
Country
United States
IP Address
104.21.85.192
ASN Information
13335
CLOUDFLARENET
Technologies
Cloudflare
CDN
HTTP/3
Miscellaneous
SSL Certificate
HTTPS Enabled
Secure
Certificate Issuer
49m404 Gateway Proxy BISO MITM CA
Valid From
2025-08-09 04:35:48
Valid Until
2025-09-08 04:36:18
Subject Name
hfbackend.site
Performance Statistics
8
Total Requests
1
Domains
1
IP Addresses
22.75 KB
Transfer Size
Content Size26.29 KB
HTTP Headers
alt-svc
h3=":443"; ma=86400
cache-control
private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
cf-ray
96dd7fc9eb58f5a9-MRS
cf-team
293e4e2ff00001006d1414b400000001
content-length
6879
content-type
text/html; charset=UTF-8
date
Tue, 12 Aug 2025 05:16:11 GMT
expires
Thu, 01 Jan 1970 00:00:01 GMT
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
referrer-policy
same-origin
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=3ZZzWNd12ic17iCEo6OOHwMsI285KVhl2I3bWC4Sxsh5yE63Nt8OQWRMVSDBsKQnV%2BVQH2zHE%2F%2FQviEJsO%2BTSrEacc9%2BtIWbiNqiMGhAj0wfIrG1dbOnzUuTzZKVzFbdcoCqK8Zy7cFbdAPRsQ%3D%3D"}],"group":"cf-nel","max_age":604800}
server
cloudflare
server-timing
cfL4;desc="?proto=TCP&rtt=0&min_rtt=0&rtt_var=0&sent=0&recv=0&lost=0&retrans=0&sent_bytes=0&recv_bytes=0&delivery_rate=0&cwnd=0&unsent_bytes=0&cid=d31ba57c8aaf90cc&ts=651&x=0"
cfReqDur;dur=780.666
x-frame-options
SAMEORIGIN
14 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
hfbackend.site
Apex domain
No category information available