URL: https://google.issem.cn/
Submission: On November 30 via automatic, source certstream-suspicious — Scanned from NL

Summary

This website contacted 4 IPs in 2 countries across 3 domains to perform 8 HTTP transactions. The main IP is 2a06:98c1:3120::3, located in United States and belongs to CLOUDFLARENET, US. The main domain is google.issem.cn.
TLS certificate: Issued by E1 on November 30th 2023. Valid for: 3 months.
This is the only time google.issem.cn was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
1 2a06:98c1:312... 13335 (CLOUDFLAR...)
2 2a00:1450:400... 15169 (GOOGLE)
4 2a00:1450:400... 15169 (GOOGLE)
1 2a00:1450:400... 15169 (GOOGLE)
8 4
Apex Domain
Subdomains
Transfer
5 gstatic.com
www.gstatic.com
fonts.gstatic.com
976 KB
2 google.com
www.google.com — Cisco Umbrella Rank: 2
3 KB
1 issem.cn
google.issem.cn
4 KB
8 3
Domain Requested by
4 www.gstatic.com www.google.com
www.gstatic.com
2 www.google.com google.issem.cn
www.gstatic.com
1 fonts.gstatic.com www.google.com
1 google.issem.cn
8 4

This site contains links to these domains. Also see Links.

Domain
www.google.com
support.google.com
Subject Issuer Validity Valid
issem.cn
E1
2023-11-30 -
2024-02-28
3 months crt.sh
www.google.com
GTS CA 1C3
2023-10-23 -
2024-01-15
3 months crt.sh
*.gstatic.com
GTS CA 1C3
2023-10-23 -
2024-01-15
3 months crt.sh

This page contains 2 frames:

Primary Page: https://google.issem.cn/
Frame ID: CF94607B2B424FFC3766EEB76157AD26
Requests: 3 HTTP requests in this frame

Frame: https://www.google.com/recaptcha/api2/anchor?ar=1&k=6LfwuyUTAAAAAOAmoS0fdqijC2PbbdH4kjq62Y1b&co=aHR0cHM6Ly9nb29nbGUuaXNzZW0uY246NDQz&hl=nl&v=-QbJqHfGOUB8nuVRLvzFLVed&size=normal&s=kPyNjiXNNDjpG7_ZybmkKZnM-oYQJoGzvn6T5ljs2t1OcCuZ5w472w0OC0flTAYY8OsAvYiEDSpgK9R97eYLAl3Ag9JWpMFmjlyk7v3ed0rFJ1kKDDYmMg_iJ6uGfo8GbNZpSimjMNqyHdKuY02L850Du3DDsV4nDpg1eVd5NtsSDeSVBNSjsXAt6nXIfPcR3zZTowtDhSZtsmZO9ekIOQ-myzP5VFUEl0uEZYKSQtgUu1G4Y3jV_o3YuVni8HKMNbOK5XTgTVA6WenzLwE&cb=45n9qos0om7g
Frame ID: 2FB191622BAE717F26C544FE4D533EE0
Requests: 5 HTTP requests in this frame

Screenshot

Page Title

https://www.google.com/

Detected technologies

Overall confidence: 100%
Detected patterns
  • <div[^>]+class="g-recaptcha"
  • /recaptcha/api\.js

Page Statistics

8
Requests

100 %
HTTPS

100 %
IPv6

3
Domains

4
Subdomains

4
IPs

2
Countries

982 kB
Transfer

1017 kB
Size

0
Cookies

Redirected requests

There were HTTP redirect chains for the following requests:

8 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
Primary Request /
google.issem.cn/
3 KB
4 KB
Document
General
Full URL
https://google.issem.cn/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a06:98c1:3120::3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
88a372a76fdf1cbcbc01c1da1e048017899143fb2da9ffebdc09d3190c77d989
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains; preload
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 1; mode=block

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.199 Safari/537.36
accept-language
nl-NL,nl;q=0.9

Response headers

access-control-allow-credentials
true
access-control-allow-origin
*
alt-svc
h3=":443"; ma=86400
cache-control
no-store
cf-cache-status
DYNAMIC
cf-placement
local-AMS
cf-ray
82e15db07e48b71e-AMS
content-type
text/html
date
Thu, 30 Nov 2023 07:27:06 GMT
expect-ct
max-age=86400, enforce
expires
Fri, 01 Jan 1990 00:00:00 GMT
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
pragma
no-cache
referrer-policy
same-origin
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=joEyzl72Xh0tQMf7ScI9ot%2BF8NV9dW4GkjgH9%2FibGY2jdbuc%2F%2BKT2kxMM%2F6DsUYlwGD%2FreLHEjYN8RiDk4ST%2FwAs%2FKZch3OMK%2BVHw%2BRiqt2JF3q2sytS%2BnnCJSQaS9IhpM%2B7wGCM34bww5OHOOY%3D"}],"group":"cf-nel","max_age":604800}
server
cloudflare
strict-transport-security
max-age=15552000; includeSubDomains; preload
vary
Accept-Encoding
x-content-type-options
nosniff
x-frame-options
SAMEORIGIN
x-xss-protection
1; mode=block
api.js
www.google.com/recaptcha/
1 KB
1 KB
Script
General
Full URL
https://www.google.com/recaptcha/api.js
Requested by
Host: google.issem.cn
URL: https://google.issem.cn/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:813::2004 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
GSE /
Resource Hash
1dd0bece16a24e16ee8d713bb7df4c7c658de5b4857d06caf75cb7a3238b0280
Security Headers
Name Value
Content-Security-Policy frame-ancestors 'self'
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 1; mode=block

Request headers

accept-language
nl-NL,nl;q=0.9
Referer
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.199 Safari/537.36

Response headers

date
Thu, 30 Nov 2023 07:27:06 GMT
content-encoding
gzip
x-content-type-options
nosniff
content-security-policy
frame-ancestors 'self'
server
GSE
x-frame-options
SAMEORIGIN
content-type
text/javascript; charset=utf-8
cache-control
private, max-age=300
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
x-xss-protection
1; mode=block
expires
Thu, 30 Nov 2023 07:27:06 GMT
recaptcha__nl.js
www.gstatic.com/recaptcha/releases/-QbJqHfGOUB8nuVRLvzFLVed/
467 KB
467 KB
Script
General
Full URL
https://www.gstatic.com/recaptcha/releases/-QbJqHfGOUB8nuVRLvzFLVed/recaptcha__nl.js
Requested by
Host: www.google.com
URL: https://www.google.com/recaptcha/api.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:831::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
47b778cb62a7d3b5e4a6f2e355403ede9f49a6a533110ac3039e2c5f4714aa78
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

Referer
Origin
https://google.issem.cn
accept-language
nl-NL,nl;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.199 Safari/537.36

Response headers

date
Sat, 25 Nov 2023 06:36:47 GMT
x-content-type-options
nosniff
age
435020
content-security-policy-report-only
require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/recaptcha
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
477845
x-xss-protection
0
last-modified
Tue, 14 Nov 2023 05:42:11 GMT
server
sffe
cross-origin-opener-policy
same-origin-allow-popups; report-to="recaptcha"
vary
Accept-Encoding
report-to
{"group":"recaptcha","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/recaptcha"}]}
content-type
text/javascript
access-control-allow-origin
*
cache-control
public, max-age=31536000
accept-ranges
bytes
expires
Sun, 24 Nov 2024 06:36:47 GMT
anchor
www.google.com/recaptcha/api2/ Frame 2FB1
7 KB
1 KB
Document
General
Full URL
https://www.google.com/recaptcha/api2/anchor?ar=1&k=6LfwuyUTAAAAAOAmoS0fdqijC2PbbdH4kjq62Y1b&co=aHR0cHM6Ly9nb29nbGUuaXNzZW0uY246NDQz&hl=nl&v=-QbJqHfGOUB8nuVRLvzFLVed&size=normal&s=kPyNjiXNNDjpG7_ZybmkKZnM-oYQJoGzvn6T5ljs2t1OcCuZ5w472w0OC0flTAYY8OsAvYiEDSpgK9R97eYLAl3Ag9JWpMFmjlyk7v3ed0rFJ1kKDDYmMg_iJ6uGfo8GbNZpSimjMNqyHdKuY02L850Du3DDsV4nDpg1eVd5NtsSDeSVBNSjsXAt6nXIfPcR3zZTowtDhSZtsmZO9ekIOQ-myzP5VFUEl0uEZYKSQtgUu1G4Y3jV_o3YuVni8HKMNbOK5XTgTVA6WenzLwE&cb=45n9qos0om7g
Requested by
Host: www.gstatic.com
URL: https://www.gstatic.com/recaptcha/releases/-QbJqHfGOUB8nuVRLvzFLVed/recaptcha__nl.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:813::2004 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
GSE /
Resource Hash
ce4c6ae6529afe46ebc08f8f46b1bc22c1ec5ee9c9486590d4d8b4738a8aa6c1
Security Headers
Name Value
Content-Security-Policy script-src 'report-sample' 'nonce-IRxu2mkqwXr-OLY2usMqDQ' 'unsafe-inline' 'strict-dynamic' https: http: 'unsafe-eval';object-src 'none';base-uri 'self';report-uri https://csp.withgoogle.com/csp/recaptcha/1
X-Content-Type-Options nosniff
X-Xss-Protection 1; mode=block

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.199 Safari/537.36
accept-language
nl-NL,nl;q=0.9

Response headers

alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
cache-control
private, max-age=0
content-encoding
gzip
content-security-policy
script-src 'report-sample' 'nonce-IRxu2mkqwXr-OLY2usMqDQ' 'unsafe-inline' 'strict-dynamic' https: http: 'unsafe-eval';object-src 'none';base-uri 'self';report-uri https://csp.withgoogle.com/csp/recaptcha/1
content-type
text/html; charset=utf-8
cross-origin-embedder-policy
require-corp
cross-origin-resource-policy
cross-origin
date
Thu, 30 Nov 2023 07:27:07 GMT
expires
Thu, 30 Nov 2023 07:27:07 GMT
report-to
{"group":"recaptcha","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/recaptcha"}]}
server
GSE
x-content-type-options
nosniff
x-xss-protection
1; mode=block
styles__ltr.css
www.gstatic.com/recaptcha/releases/-QbJqHfGOUB8nuVRLvzFLVed/ Frame 2FB1
55 KB
24 KB
Stylesheet
General
Full URL
https://www.gstatic.com/recaptcha/releases/-QbJqHfGOUB8nuVRLvzFLVed/styles__ltr.css
Requested by
Host: www.google.com
URL: https://www.google.com/recaptcha/api2/anchor?ar=1&k=6LfwuyUTAAAAAOAmoS0fdqijC2PbbdH4kjq62Y1b&co=aHR0cHM6Ly9nb29nbGUuaXNzZW0uY246NDQz&hl=nl&v=-QbJqHfGOUB8nuVRLvzFLVed&size=normal&s=kPyNjiXNNDjpG7_ZybmkKZnM-oYQJoGzvn6T5ljs2t1OcCuZ5w472w0OC0flTAYY8OsAvYiEDSpgK9R97eYLAl3Ag9JWpMFmjlyk7v3ed0rFJ1kKDDYmMg_iJ6uGfo8GbNZpSimjMNqyHdKuY02L850Du3DDsV4nDpg1eVd5NtsSDeSVBNSjsXAt6nXIfPcR3zZTowtDhSZtsmZO9ekIOQ-myzP5VFUEl0uEZYKSQtgUu1G4Y3jV_o3YuVni8HKMNbOK5XTgTVA6WenzLwE&cb=45n9qos0om7g
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:831::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
7859a62e04b0acb06516eb12454de6673883ecfaeaed6c254659bca7cd59c050
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

accept-language
nl-NL,nl;q=0.9
Referer
https://www.google.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.199 Safari/537.36

Response headers

date
Thu, 30 Nov 2023 04:28:46 GMT
content-encoding
gzip
x-content-type-options
nosniff
age
10701
content-security-policy-report-only
require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/recaptcha
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
24606
x-xss-protection
0
last-modified
Tue, 14 Nov 2023 05:42:11 GMT
server
sffe
cross-origin-opener-policy
same-origin-allow-popups; report-to="recaptcha"
vary
Accept-Encoding
report-to
{"group":"recaptcha","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/recaptcha"}]}
content-type
text/css
cache-control
public, max-age=31536000
accept-ranges
bytes
expires
Fri, 29 Nov 2024 04:28:46 GMT
recaptcha__nl.js
www.gstatic.com/recaptcha/releases/-QbJqHfGOUB8nuVRLvzFLVed/ Frame 2FB1
467 KB
467 KB
Script
General
Full URL
https://www.gstatic.com/recaptcha/releases/-QbJqHfGOUB8nuVRLvzFLVed/recaptcha__nl.js
Requested by
Host: www.google.com
URL: https://www.google.com/recaptcha/api2/anchor?ar=1&k=6LfwuyUTAAAAAOAmoS0fdqijC2PbbdH4kjq62Y1b&co=aHR0cHM6Ly9nb29nbGUuaXNzZW0uY246NDQz&hl=nl&v=-QbJqHfGOUB8nuVRLvzFLVed&size=normal&s=kPyNjiXNNDjpG7_ZybmkKZnM-oYQJoGzvn6T5ljs2t1OcCuZ5w472w0OC0flTAYY8OsAvYiEDSpgK9R97eYLAl3Ag9JWpMFmjlyk7v3ed0rFJ1kKDDYmMg_iJ6uGfo8GbNZpSimjMNqyHdKuY02L850Du3DDsV4nDpg1eVd5NtsSDeSVBNSjsXAt6nXIfPcR3zZTowtDhSZtsmZO9ekIOQ-myzP5VFUEl0uEZYKSQtgUu1G4Y3jV_o3YuVni8HKMNbOK5XTgTVA6WenzLwE&cb=45n9qos0om7g
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:831::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
47b778cb62a7d3b5e4a6f2e355403ede9f49a6a533110ac3039e2c5f4714aa78
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

accept-language
nl-NL,nl;q=0.9
Referer
https://www.google.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.199 Safari/537.36

Response headers

date
Sat, 25 Nov 2023 06:36:47 GMT
x-content-type-options
nosniff
age
435020
content-security-policy-report-only
require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/recaptcha
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
477845
x-xss-protection
0
last-modified
Tue, 14 Nov 2023 05:42:11 GMT
server
sffe
cross-origin-opener-policy
same-origin-allow-popups; report-to="recaptcha"
vary
Accept-Encoding
report-to
{"group":"recaptcha","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/recaptcha"}]}
content-type
text/javascript
access-control-allow-origin
*
cache-control
public, max-age=31536000
accept-ranges
bytes
expires
Sun, 24 Nov 2024 06:36:47 GMT
logo_48.png
www.gstatic.com/recaptcha/api2/ Frame 2FB1
2 KB
2 KB
Image
General
Full URL
https://www.gstatic.com/recaptcha/api2/logo_48.png
Requested by
Host: www.gstatic.com
URL: https://www.gstatic.com/recaptcha/releases/-QbJqHfGOUB8nuVRLvzFLVed/styles__ltr.css
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:831::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
1b9efb22c938500971aac2b2130a475fa23684dd69e43103894968df83145b8a
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

accept-language
nl-NL,nl;q=0.9
Referer
https://www.gstatic.com/recaptcha/releases/-QbJqHfGOUB8nuVRLvzFLVed/styles__ltr.css
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.199 Safari/537.36

Response headers

date
Mon, 27 Nov 2023 20:04:28 GMT
x-content-type-options
nosniff
age
213759
content-security-policy-report-only
require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/recaptcha
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
2228
x-xss-protection
0
last-modified
Tue, 03 Mar 2020 20:15:00 GMT
server
sffe
cross-origin-opener-policy
same-origin-allow-popups; report-to="recaptcha"
report-to
{"group":"recaptcha","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/recaptcha"}]}
content-type
image/png
cache-control
public, max-age=604800
accept-ranges
bytes
expires
Mon, 04 Dec 2023 20:04:28 GMT
KFOmCnqEu92Fr1Mu4mxK.woff2
fonts.gstatic.com/s/roboto/v18/ Frame 2FB1
15 KB
16 KB
Font
General
Full URL
https://fonts.gstatic.com/s/roboto/v18/KFOmCnqEu92Fr1Mu4mxK.woff2
Requested by
Host: www.google.com
URL: https://www.google.com/recaptcha/api2/anchor?ar=1&k=6LfwuyUTAAAAAOAmoS0fdqijC2PbbdH4kjq62Y1b&co=aHR0cHM6Ly9nb29nbGUuaXNzZW0uY246NDQz&hl=nl&v=-QbJqHfGOUB8nuVRLvzFLVed&size=normal&s=kPyNjiXNNDjpG7_ZybmkKZnM-oYQJoGzvn6T5ljs2t1OcCuZ5w472w0OC0flTAYY8OsAvYiEDSpgK9R97eYLAl3Ag9JWpMFmjlyk7v3ed0rFJ1kKDDYmMg_iJ6uGfo8GbNZpSimjMNqyHdKuY02L850Du3DDsV4nDpg1eVd5NtsSDeSVBNSjsXAt6nXIfPcR3zZTowtDhSZtsmZO9ekIOQ-myzP5VFUEl0uEZYKSQtgUu1G4Y3jV_o3YuVni8HKMNbOK5XTgTVA6WenzLwE&cb=45n9qos0om7g
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:813::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
3e253b66056519aa065b00a453bac37ac5ed8f3e6fe7b542e93a9dcdcc11d0bc
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

Referer
https://www.google.com/
Origin
https://www.google.com
accept-language
nl-NL,nl;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.199 Safari/537.36

Response headers

date
Thu, 23 Nov 2023 23:26:56 GMT
x-content-type-options
nosniff
age
547211
content-security-policy-report-only
require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/apps-themes
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
15344
x-xss-protection
0
last-modified
Mon, 16 Oct 2017 17:32:55 GMT
server
sffe
cross-origin-opener-policy
same-origin; report-to="apps-themes"
report-to
{"group":"apps-themes","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/apps-themes"}]}
content-type
font/woff2
access-control-allow-origin
*
cache-control
public, max-age=31536000
accept-ranges
bytes
timing-allow-origin
*
expires
Fri, 22 Nov 2024 23:26:56 GMT

Verdicts & Comments Add Verdict or Comment

9 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| documentPictureInPicture function| submitCallback object| ___grecaptcha_cfg object| grecaptcha string| __recaptcha_api boolean| __google_recaptcha_client object| closure_lm_120660

0 Cookies

1 Console Messages

Source Level URL
Text
network error URL: https://google.issem.cn/
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; preload
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 1; mode=block