Submitted URL: http://www.crocsinmalaysia.com/
Effective URL: https://www.crocs.com.sg/
Submission: On May 22 via api from US — Scanned from DE

Summary

This website contacted 4 IPs in 1 countries across 3 domains to perform 8 HTTP transactions. The main IP is 2606:4700:4400::ac40:912f, located in United States and belongs to CLOUDFLARENET, US. The main domain is www.crocs.com.sg.
TLS certificate: Issued by DigiCert EV RSA CA G2 on April 24th 2024. Valid for: a year.
This is the only time www.crocs.com.sg was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
1 1 3.33.139.32 16509 (AMAZON-02)
1 2606:4700:440... 13335 (CLOUDFLAR...)
1 6 172.64.145.47 13335 (CLOUDFLAR...)
2 13.32.99.25 16509 (AMAZON-02)
8 4
Apex Domain
Subdomains
Transfer
7 crocs.com.sg
www.crocs.com.sg
142 KB
2 cdndex.io
reporting.cdndex.io — Cisco Umbrella Rank: 27045
397 B
1 crocsinmalaysia.com
www.crocsinmalaysia.com
423 B
8 3
Domain Requested by
7 www.crocs.com.sg 1 redirects www.crocs.com.sg
2 reporting.cdndex.io www.crocs.com.sg
1 www.crocsinmalaysia.com 1 redirects
8 3

This site contains no links.

Subject Issuer Validity Valid
www.crocs.com
DigiCert EV RSA CA G2
2024-04-24 -
2025-04-18
a year crt.sh
reporting.cdndex.io
Amazon RSA 2048 M02
2024-03-12 -
2025-04-09
a year crt.sh

This page contains 2 frames:

Primary Page: https://www.crocs.com.sg/
Frame ID: D6DB2495F22085C68D0C4882E376C396
Requests: 6 HTTP requests in this frame

Frame: https://www.crocs.com.sg/cdn-cgi/challenge-platform/h/b/scripts/jsd/695da7821231/main.js
Frame ID: 7CEFEBDF18BA49FF36827C5209FBDC41
Requests: 2 HTTP requests in this frame

Screenshot


Page URL History Show full URLs

  1. http://www.crocsinmalaysia.com/ HTTP 307
    https://www.crocsinmalaysia.com/ HTTP 307
    http://www.crocsinmalaysia.com/ HTTP 301
    https://www.crocs.com.sg/ Page URL

Page Statistics

8
Requests

88 %
HTTPS

25 %
IPv6

3
Domains

3
Subdomains

4
IPs

1
Countries

143 kB
Transfer

352 kB
Size

3
Cookies

Page URL History

This captures the URL locations of the websites, including HTTP redirects and client-side redirects via JavaScript or Meta fields.

  1. http://www.crocsinmalaysia.com/ HTTP 307
    https://www.crocsinmalaysia.com/ HTTP 307
    http://www.crocsinmalaysia.com/ HTTP 301
    https://www.crocs.com.sg/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

Request Chain 5
  • https://www.crocs.com.sg/cdn-cgi/challenge-platform/scripts/jsd/main.js HTTP 302
  • https://www.crocs.com.sg/cdn-cgi/challenge-platform/h/b/scripts/jsd/695da7821231/main.js

8 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
Primary Request /
www.crocs.com.sg/
Redirect Chain
  • http://www.crocsinmalaysia.com/
  • https://www.crocsinmalaysia.com/
  • http://www.crocsinmalaysia.com/
  • https://www.crocs.com.sg/
2 KB
3 KB
Document
General
Full URL
https://www.crocs.com.sg/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:4400::ac40:912f , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
2aaab33da4f180fd43264ffdd7d151bb74a030f766048cb6fb798199ebf03223
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains

Request headers

Accept-Language
de-DE,de;q=0.9;q=0.9
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Response headers

access-control-expose-headers
x-kpsdk-ct,x-kpsdk-r,x-kpsdk-c
alt-svc
h3=":443"; ma=86400
cache-control
no-cache, no-store, must-revalidate
cf-cache-status
MISS
cf-ray
88801126dd619be9-FRA
content-type
text/html; charset=utf-8
date
Wed, 22 May 2024 21:58:20 GMT
expires
0
p3p
CP="This site does not specify a policy in the P3P header"
pragma
no-cache
server
cloudflare
strict-transport-security
max-age=15552000; includeSubDomains
vary
Accept-Encoding
x-kpsdk-ct
0WYs9M4Kr2B9weSCrMLnqk0vlBtw0SyvI0TXW0SWCTv3OsZj5p2DwisEp33QmqmXVCWezJ2z71uUshVVbVmnY1Hu0AzKtuP7F0aS46MrmTrPrRNqh4QfqTBPluU2itf72wHTbm6A079J3zAXzt3A3sFz9gb1imxktc4lrC4ND9nmAM5z

Redirect headers

Connection
keep-alive
Content-Length
106
Content-Security-Policy
script-src 'self'
Content-Type
text/html; charset=utf-8
Date
Wed, 22 May 2024 21:58:19 GMT
Expires
-1
Location
https://www.crocs.com.sg/
Pragma
no-cache
Vary
Accept
X-Content-Type-Options
nosniff
X-Frame-Options
DENY
X-XSS-Protection
1; mode=block
cache-control
no-cache, no-store, must-revalidate
ips.js
www.crocs.com.sg/149e9513-01fa-4fb0-aad4-566afd725d1b/2d206a39-8ed7-437e-a3be-862e0f06eea3/
308 KB
123 KB
Script
General
Full URL
https://www.crocs.com.sg/149e9513-01fa-4fb0-aad4-566afd725d1b/2d206a39-8ed7-437e-a3be-862e0f06eea3/ips.js?__cf__client__uuid=0WYs9M4Kr2B9weSCrMLnqk0vlBtw0SyvI0TXW0SWCTv3OsZj5p2DwisEp33QmqmXVCWezJ2z71uUshVVbVmnY1Hu0AzKtuP7F0aS46MrmTrPrRNqh4QfqTBPluU2itf72wHTbm6A079J3zAXzt3A3sFz9gb1imxktc4lrC4ND9nmAM5z&x-kpsdk-im=CiQ3OWY5OWU3MC0yNDdiLTQ5OTYtYWZiOS0xMzYxZGU5NWVlOWE
Requested by
Host: www.crocs.com.sg
URL: https://www.crocs.com.sg/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
172.64.145.47 San Francisco, United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
647461c42dc3895fd2c26876a6993671eb4b63fcc22764cfaf77a4946d999a50
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains

Request headers

sec-ch-ua
"Google Chrome";v="125", "Not:A-Brand";v="8", "Chromium";v="125"
Referer
https://www.crocs.com.sg/
Accept-Language
de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

pragma
no-cache
date
Wed, 22 May 2024 21:58:21 GMT
strict-transport-security
max-age=15552000; includeSubDomains
content-encoding
br
cf-cache-status
DYNAMIC
x-kpsdk-ct
010aIQZK5xocILC3ilw8iH0ODsW0CfNGZjr1WPbPjBF6yZYL1aJeLQ5BsS7qCC604XVh1eg8vhERbjQguWOax0KXSFZceqfFUv4IATJ1gNYxpzwRNsflRZ5GUleWvK6BUjcoMW7KWspdKa24CqiBwUT577nlILZNfkSZGCc0XHrJHCwVH
server
cloudflare
content-type
application/javascript; charset=utf-8
p3p
CP="This site does not specify a policy in the P3P header"
access-control-expose-headers
x-kpsdk-ct,x-kpsdk-r,x-kpsdk-c
cache-control
no-cache, no-store, must-revalidate
cf-ray
8880112b0b18373b-FRA
alt-svc
h3=":443"; ma=86400
expires
0
error
reporting.cdndex.io/ Frame
0
0
Preflight
General
Full URL
https://reporting.cdndex.io/error
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
13.32.99.25 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
server-13-32-99-25.fra60.r.cloudfront.net
Software
CloudFront /
Resource Hash

Request headers

Accept
*/*
Access-Control-Request-Headers
content-type
Access-Control-Request-Method
POST
Origin
https://www.crocs.com.sg
Sec-Fetch-Mode
cors
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Response headers

access-control-allow-headers
Content-Type,X-Amz-Date,Authorization,X-Api-Key,X-Amz-Security-Token
access-control-allow-methods
GET,POST,OPTIONS
access-control-allow-origin
*
access-control-expose-headers
*
content-length
2
content-type
application/json
date
Wed, 22 May 2024 21:58:22 GMT
server
CloudFront
via
1.1 b43c04a791e8dcb8ddb6bb0847fcf95a.cloudfront.net (CloudFront)
x-amz-cf-id
SJ5h-Y_lEzOD2II0FQifZ1XJIPHYBeN0SEzqpzbFQOwJ9mHL1pGHOg==
x-amz-cf-pop
FRA60-P3
x-cache
LambdaGeneratedResponse from cloudfront
error
reporting.cdndex.io/
8 B
397 B
XHR
General
Full URL
https://reporting.cdndex.io/error
Requested by
Host: www.crocs.com.sg
URL: https://www.crocs.com.sg/149e9513-01fa-4fb0-aad4-566afd725d1b/2d206a39-8ed7-437e-a3be-862e0f06eea3/ips.js?__cf__client__uuid=0WYs9M4Kr2B9weSCrMLnqk0vlBtw0SyvI0TXW0SWCTv3OsZj5p2DwisEp33QmqmXVCWezJ2z71uUshVVbVmnY1Hu0AzKtuP7F0aS46MrmTrPrRNqh4QfqTBPluU2itf72wHTbm6A079J3zAXzt3A3sFz9gb1imxktc4lrC4ND9nmAM5z&x-kpsdk-im=CiQ3OWY5OWU3MC0yNDdiLTQ5OTYtYWZiOS0xMzYxZGU5NWVlOWE
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
13.32.99.25 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
server-13-32-99-25.fra60.r.cloudfront.net
Software
CloudFront /
Resource Hash
2cb69644d1877e6dfa38adcfddfc21208f12a43753394381a54587438db2e666

Request headers

sec-ch-ua
"Google Chrome";v="125", "Not:A-Brand";v="8", "Chromium";v="125"
sec-ch-ua-platform
"Win32"
Referer
https://www.crocs.com.sg/
Accept-Language
de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36
Content-Type
application/json;charset=UTF-8

Response headers

date
Wed, 22 May 2024 21:58:22 GMT
via
1.1 b43c04a791e8dcb8ddb6bb0847fcf95a.cloudfront.net (CloudFront)
server
CloudFront
x-amz-cf-pop
FRA60-P3
x-cache
LambdaGeneratedResponse from cloudfront
access-control-allow-methods
GET,POST,OPTIONS
access-control-allow-origin
*
content-type
application/json
access-control-allow-headers
Content-Type,X-Amz-Date,Authorization,X-Api-Key,X-Amz-Security-Token
content-length
8
x-amz-cf-id
njdJOyMLfdxzN9YbhtVOLbdxin0Jow8uXvqbAZJwlDpAcxBlb2DfAw==
truncated
/
369 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
6f2cf0c99091af44641cb27eee6a0f32a56aa85f446f60a9482864f2ade413d4

Request headers

Accept-Language
de-DE,de;q=0.9;q=0.9
Referer
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Response headers

Content-Type
image/svg+xml
tl
www.crocs.com.sg/149e9513-01fa-4fb0-aad4-566afd725d1b/2d206a39-8ed7-437e-a3be-862e0f06eea3/
0
909 B
XHR
General
Full URL
https://www.crocs.com.sg/149e9513-01fa-4fb0-aad4-566afd725d1b/2d206a39-8ed7-437e-a3be-862e0f06eea3/tl
Requested by
Host: www.crocs.com.sg
URL: https://www.crocs.com.sg/149e9513-01fa-4fb0-aad4-566afd725d1b/2d206a39-8ed7-437e-a3be-862e0f06eea3/ips.js?__cf__client__uuid=0WYs9M4Kr2B9weSCrMLnqk0vlBtw0SyvI0TXW0SWCTv3OsZj5p2DwisEp33QmqmXVCWezJ2z71uUshVVbVmnY1Hu0AzKtuP7F0aS46MrmTrPrRNqh4QfqTBPluU2itf72wHTbm6A079J3zAXzt3A3sFz9gb1imxktc4lrC4ND9nmAM5z&x-kpsdk-im=CiQ3OWY5OWU3MC0yNDdiLTQ5OTYtYWZiOS0xMzYxZGU5NWVlOWE
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
172.64.145.47 San Francisco, United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains

Request headers

sec-ch-ua
"Google Chrome";v="125", "Not:A-Brand";v="8", "Chromium";v="125"
x-kpsdk-im
CiQ3OWY5OWU3MC0yNDdiLTQ5OTYtYWZiOS0xMzYxZGU5NWVlOWE
x-kpsdk-ct
0RhpjiZrgSHFQT2pahZj7RLS2pf1hxYUCTfmrSEMoLc6vn1n96dLApJRPVNSgbBFrqhSAIHtqwJVygSD9opFW9RAgZVAKcxiveva6AB0ovwe3kriOlHfFmH0c8JeWZxWceWyZR6u9zmC7cvJahKo5mhxp0AXtmaH6Clv09DkTTShQafV
Accept-Language
de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36
Content-Type
application/octet-stream
x-kpsdk-dt
13nw5vy6tx42jw2ox01hdw76w11b9
Referer
https://www.crocs.com.sg/
sec-ch-ua-platform
"Win32"

Response headers

date
Wed, 22 May 2024 21:58:22 GMT
strict-transport-security
max-age=15552000; includeSubDomains
cf-cache-status
DYNAMIC
x-kpsdk-st
1716415102347
p3p
CP="This site does not specify a policy in the P3P header"
x-kpsdk-cr
true
alt-svc
h3=":443"; ma=86400
content-length
0
pragma
no-cache
x-kpsdk-ct
0SpbzLiSRQM7jKXCHljKIfbzek23JmENgSkpkRuNEh5KGhHislCJnyPnnnWKCb3ccmFUDk2xEz4qTuRE33qn8LdgoTtLLSbumOOdgjcI0HRObt8YQXa3foXX7ggedG51dGTFEkvbb0YiW2VoElM5Xt0V71N2E4mlFlabCBg2hLsjriC4
server
cloudflare
content-type
text/plain
access-control-allow-origin
https://www.crocs.com.sg
access-control-expose-headers
x-kpsdk-ct,x-kpsdk-r,x-kpsdk-c
cache-control
no-cache, no-store, must-revalidate
access-control-allow-credentials
true
cf-ray
88801134fc50373b-FRA
expires
0
main.js
www.crocs.com.sg/cdn-cgi/challenge-platform/h/b/scripts/jsd/695da7821231/ Frame 7CEF
Redirect Chain
  • https://www.crocs.com.sg/cdn-cgi/challenge-platform/scripts/jsd/main.js
  • https://www.crocs.com.sg/cdn-cgi/challenge-platform/h/b/scripts/jsd/695da7821231/main.js
8 KB
4 KB
Script
General
Full URL
https://www.crocs.com.sg/cdn-cgi/challenge-platform/h/b/scripts/jsd/695da7821231/main.js
Protocol
H3
Server
172.64.145.47 San Francisco, United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
340c5260171028769506700cb088b9dfc28a51338ddb8f1fddda6e0f598689d0
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains
X-Content-Type-Options nosniff

Request headers

Accept-Language
de-DE,de;q=0.9;q=0.9
Referer
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Response headers

date
Wed, 22 May 2024 21:58:22 GMT
strict-transport-security
max-age=15552000; includeSubDomains
x-content-type-options
nosniff
content-encoding
br
server
cloudflare
vary
Accept-Encoding
content-type
application/javascript; charset=UTF-8
cache-control
max-age=14400, public
cf-ray
888011353c79373b-FRA
alt-svc
h3=":443"; ma=86400

Redirect headers

date
Wed, 22 May 2024 21:58:22 GMT
strict-transport-security
max-age=15552000; includeSubDomains
server
cloudflare
vary
Accept-Encoding
location
/cdn-cgi/challenge-platform/h/b/scripts/jsd/695da7821231/main.js
access-control-allow-origin
*
cache-control
max-age=300, public
cf-ray
888011350c5e373b-FRA
alt-svc
h3=":443"; ma=86400
content-length
0
favicon.ico
www.crocs.com.sg/
35 KB
12 KB
Other
General
Full URL
https://www.crocs.com.sg/favicon.ico
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
172.64.145.47 San Francisco, United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
a8e27be2a5e72f47d5c2866decf21301ccd6e6efceba65e548304bbd96fe0605
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains

Request headers

sec-ch-ua
"Google Chrome";v="125", "Not:A-Brand";v="8", "Chromium";v="125"
Referer
https://www.crocs.com.sg/
Accept-Language
de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Wed, 22 May 2024 21:58:22 GMT
content-encoding
gzip
strict-transport-security
max-age=15552000; includeSubDomains
cf-cache-status
HIT
age
16638
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=86400
last-modified
Mon, 06 May 2024 19:06:12 GMT
server
cloudflare
vary
accept-encoding
content-type
image/x-icon
access-control-expose-headers
x-kpsdk-ct,x-kpsdk-r,x-kpsdk-c
cache-control
public, max-age=2678400
cf-ray
888011350c5f373b-FRA
x-dw-request-base-id
HJYa4g1lRWYBAAB_
expires
Sat, 22 Jun 2024 21:58:22 GMT
88801126dd619be9
www.crocs.com.sg/cdn-cgi/challenge-platform/h/b/jsd/r/ Frame 7CEF
0
347 B
XHR
General
Full URL
https://www.crocs.com.sg/cdn-cgi/challenge-platform/h/b/jsd/r/88801126dd619be9
Requested by
Host: www.crocs.com.sg
URL: https://www.crocs.com.sg/cdn-cgi/challenge-platform/scripts/jsd/main.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
172.64.145.47 San Francisco, United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains

Request headers

sec-ch-ua
"Google Chrome";v="125", "Not:A-Brand";v="8", "Chromium";v="125"
sec-ch-ua-platform
"Win32"
Referer
Accept-Language
de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36
Content-Type
application/json

Response headers

date
Wed, 22 May 2024 21:58:22 GMT
strict-transport-security
max-age=15552000; includeSubDomains
server
cloudflare
cf-ray
88801135cd00373b-FRA
alt-svc
h3=":443"; ma=86400
content-length
0
content-type
text/plain; charset=UTF-8

Verdicts & Comments Add Verdict or Comment

3 JavaScript Global Variables

These are the non-standard "global" variables defined on the window object. These can be helpful in identifying possible client-side frameworks and code.

object| 0 object| 1 object| KPSDK

3 Cookies

Domain/Path Name / Value
.crocs.com.sg/ Name: cf_clearance
Value: jBvKUUJl0qlmKd1oDg0GovEp.YI4aEldv4Ub7SXOyy4-1716415102-1.0.1.1-tkE9Kmqq5WxFZj7h5yZp4CfqK5Xl5jLyukuIgcXPjR5s4ViviGeBLYyVKizx0xvZh88JhW5zDyqBBeXEUcRcaw
www.crocs.com.sg/ Name: __cf__client__uuid-ssn
Value: 0SpbzLiSRQM7jKXCHljKIfbzek23JmENgSkpkRuNEh5KGhHislCJnyPnnnWKCb3ccmFUDk2xEz4qTuRE33qn8LdgoTtLLSbumOOdgjcI0HRObt8YQXa3foXX7ggedG51dGTFEkvbb0YiW2VoElM5Xt0V71N2E4mlFlabCBg2hLsjriC4
www.crocs.com.sg/ Name: __cf__client__uuid
Value: 0SpbzLiSRQM7jKXCHljKIfbzek23JmENgSkpkRuNEh5KGhHislCJnyPnnnWKCb3ccmFUDk2xEz4qTuRE33qn8LdgoTtLLSbumOOdgjcI0HRObt8YQXa3foXX7ggedG51dGTFEkvbb0YiW2VoElM5Xt0V71N2E4mlFlabCBg2hLsjriC4

1 Console Messages

Source Level URL
Text
network error URL: https://www.crocs.com.sg/
Message:
Failed to load resource: the server responded with a status of 429 ()

Security Headers

This page lists any security headers set by the main page. If you want to understand what these mean and how to use them, head on over to this page

Header Value
Strict-Transport-Security max-age=15552000; includeSubDomains