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:May 2, 2026 15:30:17
Target URL:https://certainly.com
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Page Information
Target URL
https://certainly.com
Page Title
Fastly’s certification authority - Certainly
Status
Active
Host Information
Domain
www.certainly.com
Server
N/A
Country
United States
IP Address
151.101.131.4
ASN Information
54113
FASTLY
Technologies
Varnish
Caching
HSTS
Security
HTTP/3
Miscellaneous
SSL Certificate
HTTPS Enabled
Secure
Certificate Issuer
N/A
Valid From
2026-05-01 15:30:21
Valid Until
2027-05-02 15:30:21
Subject Name
www.certainly.com
Performance Statistics
12
Total Requests
2
Domains
1
IP Addresses
93.92 KB
Transfer Size
Content Size101.67 KB
HTTP Headers
Accept-Ranges
bytes
Age
1747
Cache-Control
public, max-age=3600
Connection
keep-alive
Content-Encoding
gzip
Content-Length
1833
Content-Type
text/html
Date
Sat, 02 May 2026 15:30:21 GMT
ETag
"af9523ac133f68d6a8fa6c445b4a3aba"
Expires
Sat, 02 May 2026 16:01:14 GMT
Last-Modified
Tue, 12 Sep 2023 15:43:51 GMT
Strict-Transport-Security
max-age=31557600
Vary
Accept-Encoding
Via
1.1 varnish
X-Cache
MISS
X-Cache-Hits
0
X-Served-By
cache-bfi-krnt7300076-BFI
X-Timer
S1777735822.506302,VS0,VE81
alt-svc
h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
19 headers detected
Technology Stack Analysis
Varnish
Caching
Varnish is a reverse caching proxy.
HSTS
Security
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
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 7
Untitled Link
www.fastly.com
Target URL
https://www.fastly.com
Explore Fastly TLS
www.fastly.com
Target URL
https://www.fastly.com/products/tls-encryption
Untitled Link
www.facebook.com
Target URL
https://www.facebook.com/FastlyEdgeCloud
Untitled Link
www.linkedin.com
Target URL
https://www.linkedin.com/company/fastly
Untitled Link
twitter.com
Target URL
https://twitter.com/fastly
Privacy policy
www.fastly.com
Target URL
https://www.fastly.com/privacy
Important considerations
docs.fastly.com
Target URL
https://docs.fastly.com/products/tls-service-options#important-considerations
Requested Domains 2
certainly.com
Unknown Type
No category information available
www.certainly.com
Subdomain
Categories
TechnologyTechnology