URL: https://validator.w3.org/
Submission: On November 12 via api from US

Summary

This website contacted 4 IPs in 1 countries across 2 domains to perform 12 HTTP transactions.
The main IP is 2603:400a:ffff:804:801e:34:0:27, located in United States and belongs to MIT-GATEWAYS - Massachusetts Institute of Technology, US. The main domain is validator.w3.org.
TLS certificate: Issued by Gandi Standard SSL CA 2 on May 23rd 2019. Valid for: 2 years.
This is the first time this domain was scanned on urlscan.io!

Verdict: Unknown

Domain & IP information

IP Address AS Autonomous System
5 2603:400a:fff... 3 (MIT-GATEWAYS)
6 128.30.52.100 3 (MIT-GATEWAYS)
1 2 2606:4700:20:... 13335 (CLOUDFLAR...)
12 4
Domain
Subdomains
Transfer
11 w3.org
81 KB
2 flattr.com
3 KB
12 2
Domain Requested by
6 www.w3.org validator.w3.org
www.w3.org
5 validator.w3.org validator.w3.org
1 button.flattr.com validator.w3.org
1 api.flattr.com 1 redirects
12 4

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

Domain
www.w3.org
jigsaw.w3.org
www.edx.org
www.csail.mit.edu
www.ercim.eu
www.keio.ac.jp
ev.buaa.edu.cn
Subject / Issuer Validity Valid
*.w3.org
Gandi Standard SSL CA 2
2019-05-23 -
2021-06-01
2 years
sni.cloudflaressl.com
CloudFlare Inc ECC CA-2
2019-10-05 -
2020-10-04
a year

Screenshot


Detected technologies

Web
Overall confidence: 100%
Detected patterns
  • headers server /Debian/i

Web
Overall confidence: 100%
Detected patterns
  • headers server /(?:Apache(?:$|\/([\d.]+)|[^\/-])|(?:^|\b)HTTPD)/i


Stats

0
Requests

0
Ad-blocked

0
Malicious

0 %
HTTPS

0 %
IPv6

0
Domains

0
Subdomains

0
IPs

0
Countries

0 kB
Transfer

0 kB
Size

0
Cookies

12 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
/
26 KB
5 KB
Document
General
Full URL
https://validator.w3.org/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
2603:400a:ffff:804:801e:34:0:27 , United States, ASN3 (MIT-GATEWAYS - Massachusetts Institute of Technology, US),
Reverse DNS
Software
Apache/2.4.38 (Debian) /
Resource Hash
2bc31e537d5a5f8dae13ec9f39f53b7dd8b325598ee4ebe7b188d05a160b8336
Security Headers
Name Value
Public-Key-Pins pin-sha256="cN0QSpPIkuwpT6iP2YjEo1bEwGpH/yiUn6yhdy+HNto="; pin-sha256="WGJkyYjx1QMdMe0UqlyOKXtydPDVrk7sl2fV+nNm1r4="; pin-sha256="LrKdTxZLRTvyHM4/atX2nquX9BeHRZMCxg3cf4rhc2I="; max-age=864000
Strict-Transport-Security max-age=15552015; preload
X-Frame-Options deny
X-Xss-Protection 1; mode=block

Request headers

:method
GET
:authority
validator.w3.org
:scheme
https
:path
/
pragma
no-cache
cache-control
no-cache
upgrade-insecure-requests
1
user-agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
sec-fetch-mode
navigate
sec-fetch-user
?1
accept
text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3
sec-fetch-site
none
accept-encoding
gzip, deflate, br
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
Sec-Fetch-Mode
navigate
Sec-Fetch-User
?1

Response headers

status
200
date
Sun, 10 Nov 2019 02:41:26 GMT
server
Apache/2.4.38 (Debian)
cache-control
max-age=604800
expires
Sun, 17 Nov 2019 02:41:26 GMT
vary
Accept-Encoding
content-encoding
gzip
content-length
5080
content-type
text/html; charset=utf-8
accept-ranges
bytes
strict-transport-security
max-age=15552015; preload
public-key-pins
pin-sha256="cN0QSpPIkuwpT6iP2YjEo1bEwGpH/yiUn6yhdy+HNto="; pin-sha256="WGJkyYjx1QMdMe0UqlyOKXtydPDVrk7sl2fV+nNm1r4="; pin-sha256="LrKdTxZLRTvyHM4/atX2nquX9BeHRZMCxg3cf4rhc2I="; max-age=864000
x-frame-options
deny
x-xss-protection
1; mode=block
base
/style
13 KB
4 KB
Stylesheet
General
Full URL
https://validator.w3.org/style/base
Requested by
Host: validator.w3.org
URL: https://validator.w3.org/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
2603:400a:ffff:804:801e:34:0:27 , United States, ASN3 (MIT-GATEWAYS - Massachusetts Institute of Technology, US),
Reverse DNS
Software
Apache/2.4.38 (Debian) /
Resource Hash
40f902e895108e3128f6307b7655d6d516e782b40fa1cc806c3603129fc195e6
Security Headers
Name Value
Public-Key-Pins pin-sha256="cN0QSpPIkuwpT6iP2YjEo1bEwGpH/yiUn6yhdy+HNto="; pin-sha256="WGJkyYjx1QMdMe0UqlyOKXtydPDVrk7sl2fV+nNm1r4="; pin-sha256="LrKdTxZLRTvyHM4/atX2nquX9BeHRZMCxg3cf4rhc2I="; max-age=864000
Strict-Transport-Security max-age=15552015; preload
X-Frame-Options deny
X-Xss-Protection 1; mode=block

Request headers

Sec-Fetch-Mode
no-cors
Referer
https://validator.w3.org/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36

Response headers

date
Tue, 15 Oct 2019 02:40:59 GMT
content-encoding
gzip
vary
negotiate,accept-encoding
status
200
content-length
3512
x-xss-protection
1; mode=block
public-key-pins
pin-sha256="cN0QSpPIkuwpT6iP2YjEo1bEwGpH/yiUn6yhdy+HNto="; pin-sha256="WGJkyYjx1QMdMe0UqlyOKXtydPDVrk7sl2fV+nNm1r4="; pin-sha256="LrKdTxZLRTvyHM4/atX2nquX9BeHRZMCxg3cf4rhc2I="; max-age=864000
last-modified
Mon, 22 May 2017 07:57:52 GMT
server
Apache/2.4.38 (Debian)
x-frame-options
deny
etag
"db8-550183a689f69;550183b5b4c12"
strict-transport-security
max-age=15552015; preload
content-type
text/css
cache-control
max-age=2592000
tcn
choice
accept-ranges
bytes
content-location
base.css.gz
expires
Thu, 14 Nov 2019 02:40:59 GMT
w3c.png
/images
2 KB
2 KB
Image
General
Full URL
https://validator.w3.org/images/w3c.png
Requested by
Host: validator.w3.org
URL: https://validator.w3.org/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
2603:400a:ffff:804:801e:34:0:27 , United States, ASN3 (MIT-GATEWAYS - Massachusetts Institute of Technology, US),
Reverse DNS
Software
Apache/2.4.38 (Debian) /
Resource Hash
eb8a52b04920b5baa98c8e3d57c28bad7e4f413c1863dbbafe5965250caa934a
Security Headers
Name Value
Public-Key-Pins pin-sha256="cN0QSpPIkuwpT6iP2YjEo1bEwGpH/yiUn6yhdy+HNto="; pin-sha256="WGJkyYjx1QMdMe0UqlyOKXtydPDVrk7sl2fV+nNm1r4="; pin-sha256="LrKdTxZLRTvyHM4/atX2nquX9BeHRZMCxg3cf4rhc2I="; max-age=864000
Strict-Transport-Security max-age=15552015; preload
X-Frame-Options deny
X-Xss-Protection 1; mode=block

Request headers

Sec-Fetch-Mode
no-cors
Referer
https://validator.w3.org/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36

Response headers

date
Tue, 15 Oct 2019 02:40:59 GMT
last-modified
Mon, 22 May 2017 07:57:37 GMT
server
Apache/2.4.38 (Debian)
etag
"758-5501839836e70"
x-frame-options
deny
content-type
image/png
status
200
cache-control
max-age=2592000
strict-transport-security
max-age=15552015; preload
accept-ranges
bytes
content-length
1880
x-xss-protection
1; mode=block
public-key-pins
pin-sha256="cN0QSpPIkuwpT6iP2YjEo1bEwGpH/yiUn6yhdy+HNto="; pin-sha256="WGJkyYjx1QMdMe0UqlyOKXtydPDVrk7sl2fV+nNm1r4="; pin-sha256="LrKdTxZLRTvyHM4/atX2nquX9BeHRZMCxg3cf4rhc2I="; max-age=864000
expires
Thu, 14 Nov 2019 02:40:59 GMT
w3c_home_nb
www.w3.org/Icons/WWW
2 KB
2 KB
Image
General
Full URL
https://www.w3.org/Icons/WWW/w3c_home_nb
Requested by
Host: validator.w3.org
URL: https://validator.w3.org/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
128.30.52.100 Cambridge, United States, ASN3 (MIT-GATEWAYS - Massachusetts Institute of Technology, US),
Reverse DNS
hans-moleman.w3.org
Software
/
Resource Hash
0162d934ea3280838f68f9cbf0615ae23468cc3628960b154a50a44b88b006ed
Security Headers
Name Value
Content-Security-Policy upgrade-insecure-requests
Strict-Transport-Security max-age=15552000; includeSubdomains; preload

Request headers

Sec-Fetch-Mode
no-cors
Referer
https://validator.w3.org/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36

Response headers

date
Sat, 09 Nov 2019 21:43:35 GMT
last-modified
Fri, 14 Jul 2006 01:56:24 GMT
etag
"84e-41880fcdc0200;584fea6300276"
tcn
choice
vary
negotiate,accept,upgrade-insecure-requests
content-type
image/png; qs=0.7
status
200
cache-control
max-age=2592000
content-security-policy
upgrade-insecure-requests
strict-transport-security
max-age=15552000; includeSubdomains; preload
accept-ranges
bytes
content-location
w3c_home_nb.png
content-length
2126
expires
Mon, 09 Dec 2019 21:43:35 GMT
opensource-55x48.png
/images
2 KB
3 KB
Image
General
Full URL
https://validator.w3.org/images/opensource-55x48.png
Requested by
Host: validator.w3.org
URL: https://validator.w3.org/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
2603:400a:ffff:804:801e:34:0:27 , United States, ASN3 (MIT-GATEWAYS - Massachusetts Institute of Technology, US),
Reverse DNS
Software
Apache/2.4.38 (Debian) /
Resource Hash
f5c1ee5f33d8cc3cb006d293606d9006ea49b177ffcbf3decf9950ac3a09ebb2
Security Headers
Name Value
Public-Key-Pins pin-sha256="cN0QSpPIkuwpT6iP2YjEo1bEwGpH/yiUn6yhdy+HNto="; pin-sha256="WGJkyYjx1QMdMe0UqlyOKXtydPDVrk7sl2fV+nNm1r4="; pin-sha256="LrKdTxZLRTvyHM4/atX2nquX9BeHRZMCxg3cf4rhc2I="; max-age=864000
Strict-Transport-Security max-age=15552015; preload
X-Frame-Options deny
X-Xss-Protection 1; mode=block

Request headers

Sec-Fetch-Mode
no-cors
Referer
https://validator.w3.org/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36

Response headers

date
Tue, 15 Oct 2019 02:40:59 GMT
last-modified
Mon, 22 May 2017 07:57:36 GMT
server
Apache/2.4.38 (Debian)
etag
"919-55018396c6b06"
x-frame-options
deny
content-type
image/png
status
200
cache-control
max-age=2592000
strict-transport-security
max-age=15552015; preload
accept-ranges
bytes
content-length
2329
x-xss-protection
1; mode=block
public-key-pins
pin-sha256="cN0QSpPIkuwpT6iP2YjEo1bEwGpH/yiUn6yhdy+HNto="; pin-sha256="WGJkyYjx1QMdMe0UqlyOKXtydPDVrk7sl2fV+nNm1r4="; pin-sha256="LrKdTxZLRTvyHM4/atX2nquX9BeHRZMCxg3cf4rhc2I="; max-age=864000
expires
Thu, 14 Nov 2019 02:40:59 GMT
I_heart_validator
www.w3.org/QA/Tools
345 B
699 B
Image
General
Full URL
https://www.w3.org/QA/Tools/I_heart_validator
Requested by
Host: validator.w3.org
URL: https://validator.w3.org/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
128.30.52.100 Cambridge, United States, ASN3 (MIT-GATEWAYS - Massachusetts Institute of Technology, US),
Reverse DNS
hans-moleman.w3.org
Software
/
Resource Hash
bcfea70498914fbf0c266351042f53e7f2910bfcc8a845e551ce6dfdc4254164
Security Headers
Name Value
Content-Security-Policy upgrade-insecure-requests
Strict-Transport-Security max-age=15552000; includeSubdomains; preload

Request headers

Sec-Fetch-Mode
no-cors
Referer
https://validator.w3.org/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36

Response headers

date
Tue, 12 Nov 2019 16:13:41 GMT
last-modified
Tue, 09 Dec 2008 20:07:13 GMT
etag
"159-45da2b06f1e40;593b72d0c4e11"
tcn
choice
vary
negotiate,accept
content-type
image/png; qs=0.7
status
200
cache-control
max-age=2592000
content-security-policy
upgrade-insecure-requests
strict-transport-security
max-age=15552000; includeSubdomains; preload
accept-ranges
bytes
content-location
I_heart_validator.png
content-length
345
expires
Thu, 12 Dec 2019 16:13:41 GMT
combined
/scripts
71 KB
23 KB
Script
General
Full URL
https://validator.w3.org/scripts/combined
Requested by
Host: validator.w3.org
URL: https://validator.w3.org/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
2603:400a:ffff:804:801e:34:0:27 , United States, ASN3 (MIT-GATEWAYS - Massachusetts Institute of Technology, US),
Reverse DNS
Software
Apache/2.4.38 (Debian) /
Resource Hash
ce5e5fb8945a241f0e2ecc93d841f3ac78a123ffb072a3f885625e68fcd43ed4
Security Headers
Name Value
Public-Key-Pins pin-sha256="cN0QSpPIkuwpT6iP2YjEo1bEwGpH/yiUn6yhdy+HNto="; pin-sha256="WGJkyYjx1QMdMe0UqlyOKXtydPDVrk7sl2fV+nNm1r4="; pin-sha256="LrKdTxZLRTvyHM4/atX2nquX9BeHRZMCxg3cf4rhc2I="; max-age=864000
Strict-Transport-Security max-age=15552015; preload
X-Frame-Options deny
X-Xss-Protection 1; mode=block

Request headers

Sec-Fetch-Mode
no-cors
Referer
https://validator.w3.org/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36

Response headers

date
Tue, 15 Oct 2019 02:40:59 GMT
content-encoding
gzip
vary
negotiate,accept-encoding
status
200
content-length
22823
x-xss-protection
1; mode=block
public-key-pins
pin-sha256="cN0QSpPIkuwpT6iP2YjEo1bEwGpH/yiUn6yhdy+HNto="; pin-sha256="WGJkyYjx1QMdMe0UqlyOKXtydPDVrk7sl2fV+nNm1r4="; pin-sha256="LrKdTxZLRTvyHM4/atX2nquX9BeHRZMCxg3cf4rhc2I="; max-age=864000
last-modified
Mon, 22 May 2017 07:57:52 GMT
server
Apache/2.4.38 (Debian)
x-frame-options
deny
etag
"5927-550183a689f69;550183b5b5bb2"
strict-transport-security
max-age=15552015; preload
content-type
application/javascript
cache-control
max-age=2592000
tcn
choice
accept-ranges
bytes
content-location
combined.js.gz
expires
Thu, 14 Nov 2019 02:40:59 GMT
w3c-include.js
www.w3.org/QA/Tools
5 KB
2 KB
Script
General
Full URL
https://www.w3.org/QA/Tools/w3c-include.js
Requested by
Host: validator.w3.org
URL: https://validator.w3.org/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
128.30.52.100 Cambridge, United States, ASN3 (MIT-GATEWAYS - Massachusetts Institute of Technology, US),
Reverse DNS
hans-moleman.w3.org
Software
/
Resource Hash
64863c880349398613b30492b4963378256574aa6b4b1083d89bf57a818e5cf3
Security Headers
Name Value
Content-Security-Policy upgrade-insecure-requests
Strict-Transport-Security max-age=15552000; includeSubdomains; preload

Request headers

Sec-Fetch-Mode
no-cors
Referer
https://validator.w3.org/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36

Response headers

date
Tue, 12 Nov 2019 16:13:41 GMT
content-encoding
gzip
last-modified
Fri, 25 Jan 2019 13:07:12 GMT
etag
"15f8-5804801568000-gzip"
vary
Accept-Encoding
content-type
application/javascript
status
200
cache-control
max-age=21600
content-security-policy
upgrade-insecure-requests
strict-transport-security
max-age=15552000; includeSubdomains; preload
accept-ranges
bytes
content-length
1864
expires
Tue, 12 Nov 2019 22:13:41 GMT
data:truncated
data:truncated
68 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
41a66062e200638edbb4ee5153c12316d89331a9647f116a3cbbdcb4c260aecb

Request headers

User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36

Response headers

Content-Type
image/png
matomo.js
www.w3.org/analytics/piwik
66 KB
22 KB
Script
General
Full URL
https://www.w3.org/analytics/piwik/matomo.js
Requested by
Host: www.w3.org
URL: https://www.w3.org/QA/Tools/w3c-include.js
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
128.30.52.100 Cambridge, United States, ASN3 (MIT-GATEWAYS - Massachusetts Institute of Technology, US),
Reverse DNS
hans-moleman.w3.org
Software
/
Resource Hash
e05cfc8ee6c159882251c45f74d6bdab570f14ed43ece74e2153b77c2dde277f
Security Headers
Name Value
Content-Security-Policy upgrade-insecure-requests
Strict-Transport-Security max-age=15552000; includeSubdomains; preload

Request headers

Sec-Fetch-Mode
no-cors
Referer
https://validator.w3.org/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36

Response headers

date
Tue, 12 Nov 2019 16:13:41 GMT
content-encoding
gzip
last-modified
Fri, 02 Aug 2019 09:26:41 GMT
etag
"106e0-58f1ef4bd5f23-gzip"
vary
Accept-Encoding
content-type
application/javascript
status
200
content-security-policy
upgrade-insecure-requests
strict-transport-security
max-age=15552000; includeSubdomains; preload
accept-ranges
bytes
content-length
22728
loader.js?mode=auto
button.flattr.com
Redirect Chain
  • https://api.flattr.com/js/0.6/load.js?mode=auto
  • https://button.flattr.com/loader.js?mode=auto
7 KB
3 KB
Script
General
Full URL
https://button.flattr.com/loader.js?mode=auto
Requested by
Host: validator.w3.org
URL: https://validator.w3.org/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:20::681a:bfb , United States, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
af7dceff9b54eb60f457283c343d0c1d373af21a74aa85ed21667cf6e58b42c2

Request headers

Referer
https://validator.w3.org/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36

Response headers

date
Tue, 12 Nov 2019 16:13:41 GMT
content-encoding
br
cf-cache-status
HIT
age
6522
x-iplb-instance
29838
status
200
alt-svc
h3-23=":443"; ma=86400
last-modified
Tue, 05 Nov 2019 14:48:59 GMT
server
cloudflare
etag
W/"5dc18bdb-1c01"
expect-ct
max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
vary
Accept-Encoding
content-type
application/javascript
cache-control
max-age=7200
cf-ray
5349cb6c2dd9597c-VIE
expires
Tue, 12 Nov 2019 16:24:59 GMT

Redirect headers

date
Tue, 12 Nov 2019 16:13:41 GMT
cf-cache-status
HIT
server
cloudflare
age
491
status
301
x-iplb-instance
29839
vary
Accept-Encoding
expect-ct
max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
content-type
text/html
location
https://button.flattr.com/loader.js?mode=auto
cf-ray
5349cb6bdd9b597c-VIE
alt-svc
h3-23=":443"; ma=86400
content-length
178
w3cx-fewd.png
www.w3.org/2018/12
15 KB
15 KB
Image
General
Full URL
https://www.w3.org/2018/12/w3cx-fewd.png
Requested by
Host: validator.w3.org
URL: https://validator.w3.org/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
128.30.52.100 Cambridge, United States, ASN3 (MIT-GATEWAYS - Massachusetts Institute of Technology, US),
Reverse DNS
hans-moleman.w3.org
Software
/
Resource Hash
7e4c73a06ae1d2af748aefe066c16a63f9b51e60141eaf12e9a3927188f8a359
Security Headers
Name Value
Content-Security-Policy upgrade-insecure-requests
Strict-Transport-Security max-age=15552000; includeSubdomains; preload

Request headers

Sec-Fetch-Mode
no-cors
Referer
https://validator.w3.org/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36

Response headers

date
Tue, 12 Nov 2019 16:13:41 GMT
last-modified
Fri, 21 Dec 2018 09:08:14 GMT
etag
"3bfb-57d849647db80"
strict-transport-security
max-age=15552000; includeSubdomains; preload
content-type
image/png; qs=0.7
status
200
cache-control
max-age=2592000
content-security-policy
upgrade-insecure-requests
accept-ranges
bytes
content-length
15355
expires
Thu, 12 Dec 2019 16:13:41 GMT
matomo.php?action_name=The%20W3C%20Markup%20Validation%20Service&idsite=444&rec=1&r=178755&h=17&m=13&s=41&url=https%3A%2F%2Fvalidator.w3.org%2F&_id=80834f5fd6918453&_idts=1573575221&_idvc=1&_idn=0&...
www.w3.org/analytics/piwik
43 B
232 B
Image
General
Full URL
https://www.w3.org/analytics/piwik/matomo.php?action_name=The%20W3C%20Markup%20Validation%20Service&idsite=444&rec=1&r=178755&h=17&m=13&s=41&url=https%3A%2F%2Fvalidator.w3.org%2F&_id=80834f5fd6918453&_idts=1573575221&_idvc=1&_idn=0&_refts=0&_viewts=1573575221&send_image=1&cookie=1&res=1600x1200&gt_ms=98&pv_id=xwELPr
Requested by
Host: validator.w3.org
URL: https://validator.w3.org/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
128.30.52.100 Cambridge, United States, ASN3 (MIT-GATEWAYS - Massachusetts Institute of Technology, US),
Reverse DNS
hans-moleman.w3.org
Software
/
Resource Hash
548f2d6f4d0d820c6c5ffbeffcbd7f0e73193e2932eefe542accc84762deec87
Security Headers
Name Value
Content-Security-Policy upgrade-insecure-requests
Strict-Transport-Security max-age=15552000; includeSubdomains; preload

Request headers

Sec-Fetch-Mode
no-cors
Referer
https://validator.w3.org/
User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36

Response headers

date
Tue, 12 Nov 2019 16:13:41 GMT
vary
Origin
content-type
image/gif
status
200
cache-control
no-store
content-security-policy
upgrade-insecure-requests
strict-transport-security
max-age=15552000; includeSubdomains; preload
content-length
43

Redirect requests

There were HTTP redirects (301, 302) for the following requests:

Request 10
  • https://api.flattr.com/js/0.6/load.js?mode=auto
  • https://button.flattr.com/loader.js?mode=auto

74 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| onformdata object| onpointerrawupdate object| MooTools function| Native function| Hash function| $A function| $arguments function| $chk function| $clear function| $defined function| $each function| $empty function| $extend function| $H function| $lambda function| $merge function| $mixin function| $pick function| $random function| $splat function| $time function| $try function| $type function| $unlink function| Class function| Chain function| Events function| Options object| Browser function| $exec function| $uid function| IFrame function| Elements function| Fx function| Cookie object| Selectors function| Swiff number| uid object| $family function| $ function| $$ function| getDocument function| getWindow function| addListener function| removeListener function| retrieve function| store function| eliminate function| getSize function| getScroll function| getScrollSize function| getPosition function| getCoordinates function| getHeight function| getWidth function| getScrollTop function| getScrollLeft function| getScrollHeight function| getScrollWidth function| getTop function| getLeft function| addEvent function| removeEvent function| addEvents function| removeEvents function| fireEvent function| cloneEvents object| _paq object| FlattrLoader object| JSON_PIWIK object| Piwik object| Matomo object| AnalyticsTracker function| piwik_log

2 Cookies

Domain/Path Name / Value
validator.w3.org/ Name: _pk_ses.444.a5c8
Value: 1
validator.w3.org/ Name: _pk_id.444.a5c8
Value: 80834f5fd6918453.1573575221.1.1573575221.1573575221.

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
Public-Key-Pins pin-sha256="cN0QSpPIkuwpT6iP2YjEo1bEwGpH/yiUn6yhdy+HNto="; pin-sha256="WGJkyYjx1QMdMe0UqlyOKXtydPDVrk7sl2fV+nNm1r4="; pin-sha256="LrKdTxZLRTvyHM4/atX2nquX9BeHRZMCxg3cf4rhc2I="; max-age=864000
Strict-Transport-Security max-age=15552015; preload
X-Frame-Options deny
X-Xss-Protection 1; mode=block