klass.ch Open in urlscan Pro
172.67.209.222 Public Scan

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URL:
https://klass.ch/
Submission: On April 26 via api (April 26th 2024, 2:29:38 am UTC) from CH — Scanned from CH

Summary HTTP 8 Redirects Links 2 Behaviour Indicators

Summary

This website contacted 1 IPs in 1 countries across 1 domains to perform 8 HTTP transactions. The main IP is 172.67.209.222, located in United States and belongs to CLOUDFLARENET, US. The main domain is klass.ch.
TLS certificate: Issued by E1 on March 29th 2024. Valid for: 3 months.

This is the only time klass.ch was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

	IP Address		AS Autonomous System
8	172.67.209.222 172.67.209.222		13335 (CLOUDFLAR...) (CLOUDFLARENET)
8	1

8 172.67.209.222 (United States)

ASN13335 (CLOUDFLARENET, US)

klass.ch	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

	Apex Domain Subdomains	Transfer
8	klass.ch klass.ch	22 KB
8	1

	Domain	Requested by
8	klass.ch	klass.ch
8	1

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

Domain
www.cloudflare.com
support.cloudflare.com

Subject Issuer	Validity	Valid
klass.ch E1	`2024-03-29` - `2024-06-27`	3 months	crt.sh

This page contains 1 frames:

Primary Page: https://klass.ch/
Frame ID: C701768F13818D819400A36420108252
Requests: 8 HTTP requests in this frame

Screenshot
Live screenshot

Full Image

Page Title

klass.ch | 523: Origin is unreachable

Page Statistics

8
Requests

100 %
HTTPS

0 %
IPv6

1
Domains

1
Subdomains

1
IPs

1
Countries

22 kB
Transfer

26 kB
Size

0
Cookies

2 Outgoing links

These are links going to different origins than the main page.

URL: https://www.cloudflare.com/5xx-error-landing?utm_source=errorcode_523&utm_campaign=klass.ch
Title: cloudflare.com

Search URL Search Domain Scan URL

URL: https://support.cloudflare.com/hc/en-us/articles/200171946-Error-523
Title: Additional troubleshooting information here.

Search URL Search Domain Scan URL

Redirected requests

There were HTTP redirect chains for the following requests:

8 HTTP transactions
0 data transactions

Method
Protocol Status Resource
Path Size
x-fer Time
Latency Type
MIME-Type IP
Location

GET
H2 523 Primary Request / Show response
klass.ch/ 7 KB
7 KB 7338ms
6667ms Document
text/html 172.67.209.222
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://klass.ch/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

172.67.209.222 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

686f7505dac12dbb725d0f91cb21ea2a7448fa4f1ad53776761afe593d42e026

Security Headers

Name	Value
X-Frame-Options	SAMEORIGIN

Request headers

Accept-Language: de-CH,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/124.0.0.0 Safari/537.36
referer: https://www.google.ch/
sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Win32"

Response headers

alt-svc: h3=":443"; ma=86400
cache-control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
cf-ray: 87a325219f6a0479-CDG
content-length: 6985
content-type: text/html; charset=UTF-8
date: Fri, 26 Apr 2024 02:29:30 GMT
expires: Thu, 01 Jan 1970 00:00:01 GMT
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
referrer-policy: same-origin
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=9EQ1XQQvx38prP1o4FGi7afx1zfU7QpYrVJYhMvHGbLPA0hlPGU5BDtTETywn4peF3gN1%2FonYfn79ZV64rw84sINBTqEOeNCweKOhmPzrjYAbmE8QHeYD95SWg%3D%3D"}],"group":"cf-nel","max_age":604800}
server: cloudflare
x-frame-options: SAMEORIGIN

GET
H2 200 main.css
klass.ch/cdn-cgi/styles/ 8 KB
2 KB 387ms
387ms Stylesheet
text/css 172.67.209.222
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://klass.ch/cdn-cgi/styles/main.css

Requested by

Host: klass.ch
URL: https://klass.ch/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

172.67.209.222 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

d30b4ea6f68456672f5abb35e9dcf7d54226372b66e9d60a7ee26b7a52568e74

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Frame-Options	DENY

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://www.google.ch/
Accept-Language: de-CH,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/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 26 Apr 2024 02:29:32 GMT
content-encoding: gzip
x-content-type-options: nosniff
last-modified: Fri, 19 Apr 2024 20:54:07 GMT
server: cloudflare
etag: W/"6622d9ef-1f4d"
x-frame-options: DENY
vary: Accept-Encoding
content-type: text/css
cache-control: max-age=7200, public
cf-ray: 87a3254e1cb70479-CDG
expires: Fri, 26 Apr 2024 04:29:32 GMT

GET
H2 200 cf-icon-browser.png
klass.ch/cdn-cgi/images/ 484 B
572 B 99ms
97ms Image
image/png 172.67.209.222
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://klass.ch/cdn-cgi/images/cf-icon-browser.png

Requested by

Host: klass.ch
URL: https://klass.ch/cdn-cgi/styles/main.css

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

172.67.209.222 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

78a7d8b29cabf16831417dba1b9bbe36fae0d060a35a495e8f10e9663b3c9e65

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Frame-Options	DENY

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://www.google.ch/
Accept-Language: de-CH,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/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 26 Apr 2024 02:29:32 GMT
x-content-type-options: nosniff
last-modified: Fri, 19 Apr 2024 20:54:07 GMT
server: cloudflare
etag: "6622d9ef-1e4"
x-frame-options: DENY
vary: Accept-Encoding
content-type: image/png
cache-control: max-age=7200, public
accept-ranges: bytes
cf-ray: 87a3254eecde0479-CDG
content-length: 484
expires: Fri, 26 Apr 2024 04:29:32 GMT

GET
H2 200 cf-icon-ok.png
klass.ch/cdn-cgi/images/ 946 B
1021 B 208ms
202ms Image
image/png 172.67.209.222
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://klass.ch/cdn-cgi/images/cf-icon-ok.png

Requested by

Host: klass.ch
URL: https://klass.ch/cdn-cgi/styles/main.css

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

172.67.209.222 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

ed732380ee3ff0f2d841784da213c8c05d2b5ae187a5217b419d21cae5cedb1b

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Frame-Options	DENY

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://www.google.ch/
Accept-Language: de-CH,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/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 26 Apr 2024 02:29:32 GMT
x-content-type-options: nosniff
last-modified: Fri, 19 Apr 2024 20:54:07 GMT
server: cloudflare
etag: "6622d9ef-3b2"
x-frame-options: DENY
vary: Accept-Encoding
content-type: image/png
cache-control: max-age=7200, public
accept-ranges: bytes
cf-ray: 87a3254f0ce60479-CDG
content-length: 946
expires: Fri, 26 Apr 2024 04:29:32 GMT

GET
H2 200 cf-icon-cloud.png
klass.ch/cdn-cgi/images/ 1 KB
2 KB 209ms
203ms Image
image/png 172.67.209.222
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://klass.ch/cdn-cgi/images/cf-icon-cloud.png

Requested by

Host: klass.ch
URL: https://klass.ch/cdn-cgi/styles/main.css

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

172.67.209.222 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

3a223426c67a0a33ff57af68a57fb589fea36af2a6e8f9dae7798c77471e0e58

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Frame-Options	DENY

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://www.google.ch/
Accept-Language: de-CH,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/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 26 Apr 2024 02:29:32 GMT
x-content-type-options: nosniff
last-modified: Fri, 19 Apr 2024 20:54:07 GMT
server: cloudflare
etag: "6622d9ef-5cc"
x-frame-options: DENY
vary: Accept-Encoding
content-type: image/png
cache-control: max-age=7200, public
accept-ranges: bytes
cf-ray: 87a3254f0ce70479-CDG
content-length: 1484
expires: Fri, 26 Apr 2024 04:29:32 GMT

GET
H2 200 cf-icon-server.png
klass.ch/cdn-cgi/images/ 1 KB
1 KB 208ms
205ms Image
image/png 172.67.209.222
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://klass.ch/cdn-cgi/images/cf-icon-server.png

Requested by

Host: klass.ch
URL: https://klass.ch/cdn-cgi/styles/main.css

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

172.67.209.222 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

41553a537f85839927155af093b7bfa1987215f474ed038714609cc48812ea3b

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Frame-Options	DENY

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://www.google.ch/
Accept-Language: de-CH,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/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 26 Apr 2024 02:29:32 GMT
x-content-type-options: nosniff
last-modified: Fri, 19 Apr 2024 20:54:07 GMT
server: cloudflare
etag: "6622d9ef-568"
x-frame-options: DENY
vary: Accept-Encoding
content-type: image/png
cache-control: max-age=7200, public
accept-ranges: bytes
cf-ray: 87a3254f0ce80479-CDG
content-length: 1384
expires: Fri, 26 Apr 2024 04:29:32 GMT

GET
H2 200 cf-icon-error.png
klass.ch/cdn-cgi/images/ 854 B
930 B 207ms
204ms Image
image/png 172.67.209.222
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://klass.ch/cdn-cgi/images/cf-icon-error.png

Requested by

Host: klass.ch
URL: https://klass.ch/cdn-cgi/styles/main.css

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

172.67.209.222 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

67f70597a183fbca7fac55d609fbaac5c34bb4d4d32a0530bbbbb42591f2de2f

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Frame-Options	DENY

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://www.google.ch/
Accept-Language: de-CH,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/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 26 Apr 2024 02:29:32 GMT
x-content-type-options: nosniff
last-modified: Fri, 19 Apr 2024 20:54:07 GMT
server: cloudflare
etag: "6622d9ef-356"
x-frame-options: DENY
vary: Accept-Encoding
content-type: image/png
cache-control: max-age=7200, public
accept-ranges: bytes
cf-ray: 87a3254f0ce90479-CDG
content-length: 854
expires: Fri, 26 Apr 2024 04:29:32 GMT

GET
H2 523 favicon.ico
klass.ch/ 7 KB
7 KB 4406ms
4406ms Other
text/html 172.67.209.222
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://klass.ch/favicon.ico

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

172.67.209.222 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

60f4ef50751499810b4ae7fe0939151a89c0dfbd1ab1af9eadb90c526cd1553a

Security Headers

Name	Value
X-Frame-Options	SAMEORIGIN

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://www.google.ch/
Accept-Language: de-CH,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/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

date: Fri, 26 Apr 2024 02:29:35 GMT
referrer-policy: same-origin
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server: cloudflare
x-frame-options: SAMEORIGIN
vary: Accept-Encoding
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=WgLeAA1x8T%2BP5xtg6XC7%2BSwj5XmmL%2FTdu%2BPEUVTjBz4AD9yxRicfD%2Bl1rhZbP4zpe%2FfX11eiVMlFpZGK%2FOqhCUSKpdFKOtDLFQeP17r6E12zcRe2A7h%2FJuTZRQ%3D%3D"}],"group":"cf-nel","max_age":604800}
content-type: text/html; charset=UTF-8
cache-control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
cf-ray: 87a32551cd830479-CDG
alt-svc: h3=":443"; ma=86400
content-length: 6985
expires: Thu, 01 Jan 1970 00:00:01 GMT

Verdicts & Comments Add Verdict or Comment

0 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.

0 Cookies

Cookies are little pieces of information stored in the browser of a user. Whenever a user visits the site again, he will also send his cookie values, thus allowing the website to re-identify him even if he changed locations. This is how permanent logins work.

2 Console Messages

A page may trigger messages to the console to be logged. These are often error messages about being unable to load a resource or execute a piece of JavaScript. Sometimes they also provide insight into the technology behind a website.

Source	Level	URL Text
network	error	URL: https://klass.ch/ Message: Failed to load resource: the server responded with a status of 523 ()
network	error	URL: https://klass.ch/favicon.ico Message: Failed to load resource: the server responded with a status of 523 ()

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-Frame-Options	SAMEORIGIN

Indicators

This is a term in the security industry to describe indicators such as IPs, Domains, Hashes, etc. This does not imply that any of these indicate malicious activity.

klass.ch
172.67.209.222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klass.ch Open in urlscan Pro 172.67.209.222 Public Scan

Summary

urlscan.io Verdict: No classification

Domain & IP information

Screenshot Live screenshot Full Image

Page Title

Page Statistics

8 Requests

100 %HTTPS

0 %IPv6

1 Domains

1 Subdomains

1 IPs

1 Countries

22 kBTransfer

26 kBSize

0 Cookies

2 Outgoing links

Redirected requests

8 HTTP transactions Everything HTML Script AJAX CSS Image Expand all 0 data transactions

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Verdicts & Comments Add Verdict or Comment

0 JavaScript Global Variables

0 Cookies

2 Console Messages

Security Headers

Indicators

klass.ch Open in urlscan Pro
172.67.209.222 Public Scan

Screenshot
Live screenshot

Full Image

8
Requests

100 %
HTTPS

0 %
IPv6

1
Domains

1
Subdomains

1
IPs

1
Countries

22 kB
Transfer

26 kB
Size

0
Cookies

8 HTTP transactions
0 data transactions