Submitted URL: http://www.chessprogramming.org/
Effective URL: https://www.chessprogramming.org/Main_Page
Submission: On December 08 via api from US — Scanned from NL

Summary

This website contacted 2 IPs in 1 countries across 1 domains to perform 9 HTTP transactions. The main IP is 185.95.44.56, located in Netherlands and belongs to NEDZONE-AS, NL. The main domain is www.chessprogramming.org.
TLS certificate: Issued by R3 on December 1st 2023. Valid for: 3 months.
This is the only time www.chessprogramming.org was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
2 11 185.95.44.56 25459 (NEDZONE-AS)
9 2
Apex Domain
Subdomains
Transfer
11 chessprogramming.org
www.chessprogramming.org
118 KB
9 1
Domain Requested by
11 www.chessprogramming.org 2 redirects www.chessprogramming.org
9 1

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

Domain
en.wikipedia.org
www.talkchess.com
web.archive.org
www.mediawiki.org
creativecommons.org
Subject Issuer Validity Valid
chessprogramming.org
R3
2023-12-01 -
2024-02-29
3 months crt.sh

This page contains 1 frames:

Primary Page: https://www.chessprogramming.org/Main_Page
Frame ID: 04D6CF49816FED2CC6D55FD259D5DE7A
Requests: 18 HTTP requests in this frame

Screenshot

Page Title

Chessprogramming wiki

Page URL History Show full URLs

  1. http://www.chessprogramming.org/ HTTP 301
    https://www.chessprogramming.org/ HTTP 301
    https://www.chessprogramming.org/Main_Page Page URL

Detected technologies

Overall confidence: 100%
Detected patterns
  • <a[^>]*href=[^>]*/Cart

Overall confidence: 100%
Detected patterns
  • <a[^>]+/Special:WhatLinksHere/

Page Statistics

9
Requests

100 %
HTTPS

0 %
IPv6

1
Domains

1
Subdomains

2
IPs

1
Countries

117 kB
Transfer

341 kB
Size

1
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.chessprogramming.org/ HTTP 301
    https://www.chessprogramming.org/ HTTP 301
    https://www.chessprogramming.org/Main_Page Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

9 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
Primary Request Main_Page
www.chessprogramming.org/
Redirect Chain
  • http://www.chessprogramming.org/
  • https://www.chessprogramming.org/
  • https://www.chessprogramming.org/Main_Page
21 KB
7 KB
Document
General
Full URL
https://www.chessprogramming.org/Main_Page
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
185.95.44.56 , Netherlands, ASN25459 (NEDZONE-AS, NL),
Reverse DNS
res3.mijnplesk.com
Software
nginx /
Resource Hash
ccdee632e2b6b9a05b770a30e44053b83d2f9edf858b4fbf17e9fefbcd933352
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.71 Safari/537.36
accept-language
nl-NL,nl;q=0.9

Response headers

cache-control
private, must-revalidate, max-age=0 public
content-encoding
gzip
content-language
en
content-length
6433
content-type
text/html; charset=UTF-8
date
Fri, 08 Dec 2023 21:49:53 GMT
expires
Thu, 01 Jan 1970 00:00:00 GMT
last-modified
Wed, 30 Jun 2021 07:38:11 GMT
link
</images/logo.png?72fb1>;rel=preload;as=image
server
nginx
vary
Accept-Encoding,Cookie,User-Agent
x-content-type-options
nosniff
x-ua-compatible
IE=Edge

Redirect headers

cache-control
private, must-revalidate, max-age=0 public
content-length
0
content-type
text/html; charset=utf-8
date
Fri, 08 Dec 2023 21:49:53 GMT
expires
Thu, 01 Jan 1970 00:00:00 GMT
last-modified
Fri, 08 Dec 2023 21:49:53 GMT
location
https://www.chessprogramming.org/Main_Page
server
nginx
vary
Accept-Encoding,Cookie,User-Agent
x-content-type-options
nosniff
logo.png
www.chessprogramming.org/images/
22 KB
22 KB
Image
General
Full URL
https://www.chessprogramming.org/images/logo.png?72fb1
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
185.95.44.56 , Netherlands, ASN25459 (NEDZONE-AS, NL),
Reverse DNS
res3.mijnplesk.com
Software
nginx /
Resource Hash
95e65e29b5ec48f7d873fb17186f0b8b3f8a64d006345dfcc0b6a92051b70056

Request headers

accept-language
nl-NL,nl;q=0.9
Referer
https://www.chessprogramming.org/Main_Page
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.71 Safari/537.36

Response headers

date
Fri, 08 Dec 2023 21:49:53 GMT
last-modified
Thu, 22 Mar 2018 02:45:03 GMT
server
nginx
etag
"5ab318af-5898"
content-type
image/png
cache-control
max-age=2592000, public
accept-ranges
bytes
content-length
22680
expires
Sun, 07 Jan 2024 21:49:53 GMT
load.php
www.chessprogramming.org/
41 KB
9 KB
Stylesheet
General
Full URL
https://www.chessprogramming.org/load.php?debug=false&lang=en&modules=ext.cite.styles%7Cmediawiki.legacy.commonPrint%2Cshared%7Cmediawiki.sectionAnchor%7Cmediawiki.skinning.interface%7Cskins.vector.styles&only=styles&skin=vector
Requested by
Host: www.chessprogramming.org
URL: https://www.chessprogramming.org/Main_Page
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
185.95.44.56 , Netherlands, ASN25459 (NEDZONE-AS, NL),
Reverse DNS
res3.mijnplesk.com
Software
nginx /
Resource Hash
9ca7b5d0022203579cc5b4bfd7f7c025c914fcc25eefc5cb5cddf275b08e4bcc
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
nl-NL,nl;q=0.9
Referer
https://www.chessprogramming.org/Main_Page
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.71 Safari/537.36

Response headers

date
Fri, 08 Dec 2023 21:49:53 GMT
content-encoding
gzip
x-content-type-options
nosniff
server
nginx
vary
Accept-Encoding,User-Agent
content-type
text/css; charset=utf-8
access-control-allow-origin
*
cache-control
public, max-age=300, s-maxage=300, public
content-length
9273
expires
Fri, 08 Dec 2023 21:54:53 GMT
load.php
www.chessprogramming.org/
20 KB
8 KB
Script
General
Full URL
https://www.chessprogramming.org/load.php?debug=false&lang=en&modules=startup&only=scripts&skin=vector
Requested by
Host: www.chessprogramming.org
URL: https://www.chessprogramming.org/Main_Page
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
185.95.44.56 , Netherlands, ASN25459 (NEDZONE-AS, NL),
Reverse DNS
res3.mijnplesk.com
Software
nginx /
Resource Hash
b348f3f3fdc264c3f35292feac7d47cb91803d99e7d4fe5bf2ea9783380e23b5
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
nl-NL,nl;q=0.9
Referer
https://www.chessprogramming.org/Main_Page
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.71 Safari/537.36

Response headers

date
Fri, 08 Dec 2023 21:49:53 GMT
content-encoding
gzip
x-content-type-options
nosniff
server
nginx
vary
Accept-Encoding,User-Agent
content-type
text/javascript; charset=utf-8
cache-control
public, max-age=300, s-maxage=300, public
link
</load.php?debug=false&lang=en&modules=jquery%2Cmediawiki&only=scripts&skin=vector&version=11zjzjn>;rel=preload;as=script
content-length
7535
expires
Fri, 08 Dec 2023 21:54:53 GMT
load.php
www.chessprogramming.org/
0
207 B
Stylesheet
General
Full URL
https://www.chessprogramming.org/load.php?debug=false&lang=en&modules=site.styles&only=styles&skin=vector
Requested by
Host: www.chessprogramming.org
URL: https://www.chessprogramming.org/Main_Page
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
185.95.44.56 , Netherlands, ASN25459 (NEDZONE-AS, NL),
Reverse DNS
res3.mijnplesk.com
Software
nginx /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
nl-NL,nl;q=0.9
Referer
https://www.chessprogramming.org/Main_Page
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.71 Safari/537.36

Response headers

date
Fri, 08 Dec 2023 21:49:53 GMT
x-content-type-options
nosniff
server
nginx
vary
User-Agent
content-type
text/css; charset=utf-8
access-control-allow-origin
*
cache-control
public, max-age=300, s-maxage=300, public
content-length
0
expires
Fri, 08 Dec 2023 21:54:53 GMT
cc-by-sa.png
www.chessprogramming.org/images/
1 KB
2 KB
Image
General
Full URL
https://www.chessprogramming.org/images/cc-by-sa.png
Requested by
Host: www.chessprogramming.org
URL: https://www.chessprogramming.org/Main_Page
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
185.95.44.56 , Netherlands, ASN25459 (NEDZONE-AS, NL),
Reverse DNS
res3.mijnplesk.com
Software
nginx /
Resource Hash
db7a96c486bfa58eca4a4b31a8333d8059509e247eec0a9e065347af93c62ec7

Request headers

accept-language
nl-NL,nl;q=0.9
Referer
https://www.chessprogramming.org/Main_Page
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.71 Safari/537.36

Response headers

date
Fri, 08 Dec 2023 21:49:53 GMT
last-modified
Wed, 21 Mar 2018 22:32:30 GMT
server
nginx
etag
"5ab2dd7e-561"
content-type
image/png
cache-control
max-age=2592000, public
accept-ranges
bytes
content-length
1377
expires
Sun, 07 Jan 2024 21:49:53 GMT
poweredby_mediawiki_88x31.png
www.chessprogramming.org/resources/assets/
3 KB
4 KB
Image
General
Full URL
https://www.chessprogramming.org/resources/assets/poweredby_mediawiki_88x31.png
Requested by
Host: www.chessprogramming.org
URL: https://www.chessprogramming.org/Main_Page
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
185.95.44.56 , Netherlands, ASN25459 (NEDZONE-AS, NL),
Reverse DNS
res3.mijnplesk.com
Software
nginx /
Resource Hash
a26827a91943911e5570ad3bf4e6d4ee751ed02fffdcc6567a818f48df40f70c

Request headers

accept-language
nl-NL,nl;q=0.9
Referer
https://www.chessprogramming.org/Main_Page
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.71 Safari/537.36

Response headers

date
Fri, 08 Dec 2023 21:49:53 GMT
last-modified
Tue, 05 Jun 2018 20:42:12 GMT
server
nginx
etag
"5b16f5a4-da1"
content-type
image/png
cache-control
max-age=2592000, public
accept-ranges
bytes
content-length
3489
expires
Sun, 07 Jan 2024 21:49:53 GMT
truncated
/
395 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
b0b857df5f7272e9bfaec6475cf18a3381a455c3a1230de258c0bf67b3cf3e6d

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/120.0.6099.71 Safari/537.36

Response headers

Content-Type
image/svg+xml
truncated
/
174 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
74d7aa0346dd719a960134bcb0356bbbc0c1b6e13f518f2c1062c39176bae1c3

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/120.0.6099.71 Safari/537.36

Response headers

Content-Type
image/svg+xml
truncated
/
124 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
3baeb8692a653764fd746861897a7b38f2a390ad162fd738a27066e4430e6645

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/120.0.6099.71 Safari/537.36

Response headers

Content-Type
image/png
truncated
/
69 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
b1f4105404bf3218c5aa5517fb05cc7ebb671d0cfb855d99a69168353a30abed

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/120.0.6099.71 Safari/537.36

Response headers

Content-Type
image/png
truncated
/
116 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
c2e6545a892a1a50e7ee8fc5978efddbbd0967c6aae9a4d435b5b96e43af4afa

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/120.0.6099.71 Safari/537.36

Response headers

Content-Type
image/png
truncated
/
94 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
fa86b811027fd5dc20c28c65551d994c8afa3b9430fd246c2f98a069736f272a

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/120.0.6099.71 Safari/537.36

Response headers

Content-Type
image/png
truncated
/
218 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
d047d5437d50995f760b9738dc77a0e457b6713e1dc0355a0b5f18fbb5cb3c83

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/120.0.6099.71 Safari/537.36

Response headers

Content-Type
image/svg+xml
truncated
/
96 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
92cfdc842c5a7d694e7caa258784b29203842c5d21df1af2a332fd4a62cc8440

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/120.0.6099.71 Safari/537.36

Response headers

Content-Type
image/png
load.php
www.chessprogramming.org/
172 KB
49 KB
Script
General
Full URL
https://www.chessprogramming.org/load.php?debug=false&lang=en&modules=jquery%2Cmediawiki&only=scripts&skin=vector&version=11zjzjn
Requested by
Host: www.chessprogramming.org
URL: https://www.chessprogramming.org/Main_Page
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
185.95.44.56 , Netherlands, ASN25459 (NEDZONE-AS, NL),
Reverse DNS
res3.mijnplesk.com
Software
nginx /
Resource Hash
c30867ab45e532416809a0217f05477d1c19cda15720834870ddebd80a217f90
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
nl-NL,nl;q=0.9
Referer
https://www.chessprogramming.org/Main_Page
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.71 Safari/537.36

Response headers

date
Fri, 08 Dec 2023 21:49:53 GMT
content-encoding
gzip
x-content-type-options
nosniff
server
nginx
vary
Accept-Encoding,User-Agent
content-type
text/javascript; charset=utf-8
cache-control
public, max-age=2592000, s-maxage=2592000, public
expires
Sun, 07 Jan 2024 21:49:53 GMT
load.php
www.chessprogramming.org/
58 KB
17 KB
Script
General
Full URL
https://www.chessprogramming.org/load.php?debug=false&lang=en&modules=ext.cite.a11y%7Cjquery.accessKeyLabel%2CcheckboxShiftClick%2Cclient%2Ccookie%2CgetAttrs%2ChighlightText%2Cmw-jump%2Csuggestions%2CtabIndex%2Cthrottle-debounce%7Cmediawiki.RegExp%2Capi%2Ccookie%2Cnotify%2CsearchSuggest%2Cstorage%2Ctoc%2Cuser%2Cutil%7Cmediawiki.api.user%7Cmediawiki.page.ready%2Cstartup%7Csite%7Cskins.vector.js%7Cuser.defaults&skin=vector&version=18u12dr
Requested by
Host: www.chessprogramming.org
URL: https://www.chessprogramming.org/load.php?debug=false&lang=en&modules=jquery%2Cmediawiki&only=scripts&skin=vector&version=11zjzjn
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
185.95.44.56 , Netherlands, ASN25459 (NEDZONE-AS, NL),
Reverse DNS
res3.mijnplesk.com
Software
nginx /
Resource Hash
aa7801a14c41e14fd115271f9ede78a7966396153c91e3e32d902efa134c37bc
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
nl-NL,nl;q=0.9
Referer
https://www.chessprogramming.org/Main_Page
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.71 Safari/537.36

Response headers

date
Fri, 08 Dec 2023 21:49:53 GMT
content-encoding
gzip
x-content-type-options
nosniff
server
nginx
vary
Accept-Encoding,User-Agent
content-type
text/javascript; charset=utf-8
cache-control
public, max-age=300, s-maxage=300, public
content-length
16766
expires
Fri, 08 Dec 2023 21:54:53 GMT
truncated
/
165 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
681ca95af4fb59ae89d31a01f01d3e04827467d36c32388bdab5bbf4881c58e2

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/120.0.6099.71 Safari/537.36

Response headers

Content-Type
image/svg+xml

Verdicts & Comments Add Verdict or Comment

104 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| documentPictureInPicture object| RLQ object| mwPerformance function| mwNow function| isCompatible number| mediaWikiLoadStart function| $ function| jQuery function| $j object| mediaWiki object| mw string| wgLoadScript boolean| debug string| skin string| stylepath string| wgUrlProtocols string| wgArticlePath string| wgScriptPath string| wgScriptExtension string| wgScript object| wgSearchType boolean| wgVariantArticlePath object| wgActionPaths string| wgServer string| wgServerName string| wgUserLanguage string| wgContentLanguage boolean| wgTranslateNumerals string| wgVersion boolean| wgEnableAPI boolean| wgEnableWriteAPI string| wgMainPageTitle object| wgFormattedNamespaces object| wgNamespaceIds object| wgContentNamespaces string| wgSiteName string| wgDBname object| wgExtraSignatureNamespaces object| wgAvailableSkins string| wgExtensionAssetsPath string| wgCookiePrefix string| wgCookieDomain string| wgCookiePath number| wgCookieExpiration number| wgResourceLoaderMaxQueryLength object| wgCaseSensitiveNamespaces string| wgLegalTitleChars string| wgIllegalFileChars number| wgResourceLoaderStorageVersion boolean| wgResourceLoaderStorageEnabled object| wgForeignUploadTargets boolean| wgEnableUploads boolean| wgCiteVisualEditorOtherGroup boolean| wgCiteResponsiveReferences object| wgMFSearchAPIParams object| wgMFQueryPropModules object| wgMFSearchGenerator string| wgMFNearbyEndpoint object| wgMFThumbnailSizes object| wgMFEditorOptions object| wgMFLicense number| wgMFSchemaEditSampleRate object| wgMFExperiments boolean| wgMFEnableJSConsoleRecruitment string| wgMFPhotoUploadEndpoint string| wgMFDeviceWidthTablet boolean| wgMFCollapseSectionsByDefault string| wgCanonicalNamespace boolean| wgCanonicalSpecialPageName number| wgNamespaceNumber string| wgPageName string| wgTitle number| wgCurRevisionId number| wgRevisionId number| wgArticleId boolean| wgIsArticle boolean| wgIsRedirect string| wgAction object| wgUserName object| wgUserGroups object| wgCategories boolean| wgBreakFrames string| wgPageContentLanguage string| wgPageContentModel object| wgSeparatorTransformTable object| wgDigitTransformTable string| wgDefaultDateFormat object| wgMonthNames object| wgMonthNamesShort string| wgRelevantPageName number| wgRelevantArticleId string| wgRequestId boolean| wgIsProbablyEditable boolean| wgRelevantPageIsProbablyEditable object| wgRestrictionEdit object| wgRestrictionMove boolean| wgIsMainPage string| wgPreferredVariant boolean| wgMFExpandAllSectionsUserOption object| wgMFDisplayWikibaseDescriptions object| wgPageParseReport number| wgBackendResponseTime object| NORLQ object| wgFragmentMode

1 Cookies

Domain/Path Name / Value
www.chessprogramming.org/ Name: cpPosTime
Value: 1702072193.3969

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
X-Content-Type-Options nosniff