URL: https://posta.vsb.cz/
Submission: On August 20 via automatic, source certstream-suspicious — Scanned from IT

Summary

This website contacted 4 IPs in 3 countries across 3 domains to perform 13 HTTP transactions. The main IP is 158.196.149.70, located in Ostrava, Czech Republic and belongs to CESNET2, CZ. The main domain is posta.vsb.cz.
TLS certificate: Issued by GEANT OV RSA CA 4 on September 8th 2023. Valid for: a year.
This is the only time posta.vsb.cz was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
9 158.196.149.70 2852 (CESNET2)
2 104.18.10.207 13335 (CLOUDFLAR...)
1 158.196.0.81 2852 (CESNET2)
1 151.101.194.137 54113 (FASTLY)
13 4
Apex Domain
Subdomains
Transfer
10 vsb.cz
posta.vsb.cz
www.vsb.cz
66 KB
2 bootstrapcdn.com
stackpath.bootstrapcdn.com — Cisco Umbrella Rank: 4508
45 KB
1 jquery.com
code.jquery.com — Cisco Umbrella Rank: 1211
24 KB
13 3
Domain Requested by
9 posta.vsb.cz posta.vsb.cz
2 stackpath.bootstrapcdn.com posta.vsb.cz
1 code.jquery.com posta.vsb.cz
1 www.vsb.cz posta.vsb.cz
13 4

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

Domain
idoc.vsb.cz
office365.vsb.cz
hromadne-emaily.vsb.cz
nextcloud.vsb.cz
innet.vsb.cz
idesk.vsb.cz
Subject Issuer Validity Valid
posta.vsb.cz
GEANT OV RSA CA 4
2023-09-08 -
2024-09-07
a year crt.sh
bootstrapcdn.com
WE1
2024-07-23 -
2024-10-21
3 months crt.sh
www.vsb.cz
GEANT OV RSA CA 4
2024-06-04 -
2025-06-04
a year crt.sh
*.jquery.com
Sectigo ECC Domain Validation Secure Server CA
2024-06-25 -
2025-06-25
a year crt.sh

This page contains 1 frames:

Primary Page: https://posta.vsb.cz/
Frame ID: E5901379914270C935BA9E24704416E0
Requests: 13 HTTP requests in this frame

Screenshot

Page Title

posta.vsb.cz

Detected technologies

Overall confidence: 100%
Detected patterns
  • <link[^>]* href=[^>]*?bootstrap(?:[^>]*?([0-9a-fA-F]{7,40}|[\d]+(?:.[\d]+(?:.[\d]+)?)?)|)[^>]*?(?:\.min)?\.css
  • bootstrap(?:[^>]*?([0-9a-fA-F]{7,40}|[\d]+(?:.[\d]+(?:.[\d]+)?)?)|)[^>]*?(?:\.min)?\.js

Overall confidence: 100%
Detected patterns
  • jquery[.-]([\d.]*\d)[^/]*\.js
  • jquery.*\.js(?:\?ver(?:sion)?=([\d.]+))?

Page Statistics

13
Requests

100 %
HTTPS

0 %
IPv6

3
Domains

4
Subdomains

4
IPs

3
Countries

135 kB
Transfer

352 kB
Size

0
Cookies

Redirected requests

There were HTTP redirect chains for the following requests:

13 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
Primary Request /
posta.vsb.cz/
10 KB
3 KB
Document
General
Full URL
https://posta.vsb.cz/
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
158.196.149.70 Ostrava, Czech Republic, ASN2852 (CESNET2, CZ),
Reverse DNS
posta-rc.vsb.cz
Software
nginx/1.22.1 /
Resource Hash
a12d60cdb8ec3943aef845f7470f3e621e914a294bdfe9a13bd3edc980ec4b94

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

Connection
keep-alive
Content-Encoding
gzip
Content-Type
text/html
Date
Tue, 20 Aug 2024 06:47:58 GMT
ETag
W/"66824edf-28f5"
Last-Modified
Mon, 01 Jul 2024 06:38:23 GMT
Server
nginx/1.22.1
Transfer-Encoding
chunked
bootstrap.min.css
stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/
152 KB
27 KB
Stylesheet
General
Full URL
https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css
Requested by
Host: posta.vsb.cz
URL: https://posta.vsb.cz/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
104.18.10.207 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
60b19e5da6a9234ff9220668a5ec1125c157a268513256188ee80f2d2c8d8d36
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
X-Content-Type-Options nosniff

Request headers

Referer
https://posta.vsb.cz/
Origin
https://posta.vsb.cz
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Tue, 20 Aug 2024 06:47:59 GMT
content-encoding
br
x-content-type-options
nosniff
cf-cache-status
HIT
cdn-edgestorageid
1055
strict-transport-security
max-age=31536000; includeSubDomains; preload
cdn-cachedat
03/18/2024 12:46:56
cdn-pullzone
252412
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=86400
last-modified
Mon, 25 Jan 2021 22:04:08 GMT
cdn-proxyver
1.04
cdn-requestpullcode
200
server
cloudflare
etag
W/"a15c2ac3234aa8f6064ef9c1f7383c37"
vary
Accept-Encoding
content-type
text/css; charset=utf-8
access-control-allow-origin
*
cdn-cache
HIT
cdn-uid
b1941f61-b576-4f40-80de-5677acb38f74
cache-control
public, max-age=31919000
cdn-requestid
553bf4ee9c2bc7f3130ec6fab936fb1b
timing-allow-origin
*
cdn-requestcountrycode
DE
cdn-status
200
cf-ray
8b606f61aff73747-MXP
cdn-requestpullsuccess
True
styles.css
posta.vsb.cz/
2 KB
2 KB
Stylesheet
General
Full URL
https://posta.vsb.cz/styles.css
Requested by
Host: posta.vsb.cz
URL: https://posta.vsb.cz/
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
158.196.149.70 Ostrava, Czech Republic, ASN2852 (CESNET2, CZ),
Reverse DNS
posta-rc.vsb.cz
Software
nginx/1.22.1 /
Resource Hash
fc15c79ba12347d58d648094349a4d2d1c926a794ca158f44da44f2f1d4e962c

Request headers

Referer
https://posta.vsb.cz/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

Date
Tue, 20 Aug 2024 06:47:58 GMT
Last-Modified
Thu, 07 Sep 2023 08:54:14 GMT
Server
nginx/1.22.1
ETag
"64f98fb6-6d5"
Content-Type
text/css
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
1749
vsb_cs.svg
www.vsb.cz/share/webresources/logos/full/vsb/
6 KB
3 KB
Image
General
Full URL
https://www.vsb.cz/share/webresources/logos/full/vsb/vsb_cs.svg
Requested by
Host: posta.vsb.cz
URL: https://posta.vsb.cz/
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
158.196.0.81 Havířov, Czech Republic, ASN2852 (CESNET2, CZ),
Reverse DNS
www-a2.vsb.cz
Software
nginx/1.14.1 /
Resource Hash
62a328b7723382a7c87bafe6239ad6021f540692d2b4be10ca074d89388214b3

Request headers

Referer
https://posta.vsb.cz/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

Date
Tue, 20 Aug 2024 06:47:59 GMT
Content-Encoding
gzip
Last-Modified
Mon, 17 Dec 2018 01:33:30 GMT
Server
nginx/1.14.1
ETag
W/"5c16fcea-18e7"
Transfer-Encoding
chunked
Vary
Accept-Encoding, Origin
Content-Type
image/svg+xml
Access-Control-Allow-Methods
GET, HEAD, POST, PUT, DELETE, OPTIONS, PATCH
Cache-Control
no-cache
Connection
keep-alive
Expires
Tue, 20 Aug 2024 06:47:58 GMT
flag-cr.png
posta.vsb.cz/images/
849 B
1 KB
Image
General
Full URL
https://posta.vsb.cz/images/flag-cr.png
Requested by
Host: posta.vsb.cz
URL: https://posta.vsb.cz/
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
158.196.149.70 Ostrava, Czech Republic, ASN2852 (CESNET2, CZ),
Reverse DNS
posta-rc.vsb.cz
Software
nginx/1.22.1 /
Resource Hash
2db01ff2e46696a2a9ffa5d4f5af6f2e95bef36e12aa0eb7e05045e73c0396ad

Request headers

Referer
https://posta.vsb.cz/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

Date
Tue, 20 Aug 2024 06:47:58 GMT
Last-Modified
Thu, 07 Sep 2023 08:52:44 GMT
Server
nginx/1.22.1
ETag
"64f98f5c-351"
Content-Type
image/png
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
849
flag-uk.png
posta.vsb.cz/images/
2 KB
2 KB
Image
General
Full URL
https://posta.vsb.cz/images/flag-uk.png
Requested by
Host: posta.vsb.cz
URL: https://posta.vsb.cz/
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
158.196.149.70 Ostrava, Czech Republic, ASN2852 (CESNET2, CZ),
Reverse DNS
posta-rc.vsb.cz
Software
nginx/1.22.1 /
Resource Hash
347ee97a492f79675749d03533810ff899ee6a784b4e156f3e0a7613cdfb3d40

Request headers

Referer
https://posta.vsb.cz/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

Date
Tue, 20 Aug 2024 06:47:58 GMT
Last-Modified
Thu, 07 Sep 2023 08:52:44 GMT
Server
nginx/1.22.1
ETag
"64f98f5c-6e7"
Content-Type
image/png
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
1767
jquery-3.3.1.slim.min.js
code.jquery.com/
68 KB
24 KB
Script
General
Full URL
https://code.jquery.com/jquery-3.3.1.slim.min.js
Requested by
Host: posta.vsb.cz
URL: https://posta.vsb.cz/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
151.101.194.137 San Francisco, United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
nginx /
Resource Hash
dde76b9b2b90d30eb97fc81f06caa8c338c97b688cea7d2729c88f529f32fbb1

Request headers

Referer
https://posta.vsb.cz/
Origin
https://posta.vsb.cz
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Tue, 20 Aug 2024 06:47:59 GMT
content-encoding
gzip
via
1.1 varnish, 1.1 varnish
age
2221711
x-cache
HIT, HIT
cross-origin-resource-policy
cross-origin
content-length
24038
x-served-by
cache-lga21982-LGA, cache-mxp6945-MXP
last-modified
Fri, 18 Oct 1991 12:00:00 GMT
server
nginx
x-timer
S1724136480.597017,VS0,VE0
etag
W/"28feccc0-1111d"
vary
Accept-Encoding
content-type
application/javascript; charset=utf-8
access-control-allow-origin
*
cache-control
public, max-age=31536000, stale-while-revalidate=604800
accept-ranges
bytes
x-cache-hits
3, 63633
bootstrap.min.js
stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/
57 KB
18 KB
Script
General
Full URL
https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js
Requested by
Host: posta.vsb.cz
URL: https://posta.vsb.cz/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
104.18.10.207 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
0a34a87842c539c1f4feec56bba982fd596b73500046a6e6fe38a22260c6577b
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
X-Content-Type-Options nosniff

Request headers

Referer
https://posta.vsb.cz/
Origin
https://posta.vsb.cz
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Tue, 20 Aug 2024 06:47:59 GMT
content-encoding
gzip
x-content-type-options
nosniff
cf-cache-status
HIT
cdn-edgestorageid
1068
strict-transport-security
max-age=31536000; includeSubDomains; preload
age
281041
cdn-cachedat
01/17/2024 22:37:26
cdn-pullzone
252412
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=86400
last-modified
Mon, 25 Jan 2021 22:04:08 GMT
cdn-proxyver
1.04
cdn-requestpullcode
200
server
cloudflare
etag
W/"e1d98d47689e00f8ecbc5d9f61bdb42e"
vary
Accept-Encoding
content-type
application/javascript; charset=utf-8
access-control-allow-origin
*
cdn-cache
HIT
cdn-uid
b1941f61-b576-4f40-80de-5677acb38f74
cache-control
public, max-age=31919000
cdn-requestid
00188e683c9687b0898d0a6f43cba4cf
timing-allow-origin
*
cdn-requestcountrycode
US
cdn-status
200
cf-ray
8b606f61b8233747-MXP
cdn-requestpullsuccess
True
jquery.matchHeight-min.js
posta.vsb.cz/
3 KB
4 KB
Script
General
Full URL
https://posta.vsb.cz/jquery.matchHeight-min.js
Requested by
Host: posta.vsb.cz
URL: https://posta.vsb.cz/
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
158.196.149.70 Ostrava, Czech Republic, ASN2852 (CESNET2, CZ),
Reverse DNS
posta-rc.vsb.cz
Software
nginx/1.22.1 /
Resource Hash
fa87904726726364ad19a7c4b2f2b20ee10637325601b5aa88ed8bfdcb7117a7

Request headers

Referer
https://posta.vsb.cz/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

Date
Tue, 20 Aug 2024 06:47:58 GMT
Last-Modified
Thu, 07 Sep 2023 08:54:06 GMT
Server
nginx/1.22.1
ETag
"64f98fae-d34"
Content-Type
application/javascript
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
3380
functions.js
posta.vsb.cz/
68 B
317 B
Script
General
Full URL
https://posta.vsb.cz/functions.js
Requested by
Host: posta.vsb.cz
URL: https://posta.vsb.cz/
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
158.196.149.70 Ostrava, Czech Republic, ASN2852 (CESNET2, CZ),
Reverse DNS
posta-rc.vsb.cz
Software
nginx/1.22.1 /
Resource Hash
3ae1fb4ce23201bb055aa39d49394d9248c8af48b36eb4be854679d3e64e897e

Request headers

Referer
https://posta.vsb.cz/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

Date
Tue, 20 Aug 2024 06:47:59 GMT
Last-Modified
Thu, 07 Sep 2023 08:53:20 GMT
Server
nginx/1.22.1
ETag
"64f98f80-44"
Content-Type
application/javascript
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
68
Drive-Bold.woff2
posta.vsb.cz/fonts/
26 KB
26 KB
Font
General
Full URL
https://posta.vsb.cz/fonts/Drive-Bold.woff2
Requested by
Host: posta.vsb.cz
URL: https://posta.vsb.cz/styles.css
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
158.196.149.70 Ostrava, Czech Republic, ASN2852 (CESNET2, CZ),
Reverse DNS
posta-rc.vsb.cz
Software
nginx/1.22.1 /
Resource Hash
f7e5ed23b0cd8bab79cc0d217820957a37889a0d89f69c3acf4bb88dac0cdedc

Request headers

Referer
https://posta.vsb.cz/styles.css
Origin
https://posta.vsb.cz
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

Date
Tue, 20 Aug 2024 06:47:59 GMT
Last-Modified
Thu, 07 Sep 2023 08:52:14 GMT
Server
nginx/1.22.1
ETag
"64f98f3e-66bc"
Content-Type
font/woff2
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
26300
Drive-Regular.woff2
posta.vsb.cz/fonts/
24 KB
25 KB
Font
General
Full URL
https://posta.vsb.cz/fonts/Drive-Regular.woff2
Requested by
Host: posta.vsb.cz
URL: https://posta.vsb.cz/styles.css
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
158.196.149.70 Ostrava, Czech Republic, ASN2852 (CESNET2, CZ),
Reverse DNS
posta-rc.vsb.cz
Software
nginx/1.22.1 /
Resource Hash
c262f1900b58922aaad7860a73bbc9b746cbc058f6b9f7a01b46470479d1ac8a

Request headers

Referer
https://posta.vsb.cz/styles.css
Origin
https://posta.vsb.cz
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

Date
Tue, 20 Aug 2024 06:47:59 GMT
Last-Modified
Thu, 07 Sep 2023 08:52:14 GMT
Server
nginx/1.22.1
ETag
"64f98f3e-61f8"
Content-Type
font/woff2
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
25080
favicon-32x32.png
posta.vsb.cz/images/
732 B
970 B
Other
General
Full URL
https://posta.vsb.cz/images/favicon-32x32.png
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
158.196.149.70 Ostrava, Czech Republic, ASN2852 (CESNET2, CZ),
Reverse DNS
posta-rc.vsb.cz
Software
nginx/1.22.1 /
Resource Hash
3160d4738739fd88b652220536abdeb5972ed8f9bbb3805e3c98d0f35cd903ca

Request headers

Referer
https://posta.vsb.cz/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

Date
Tue, 20 Aug 2024 06:47:59 GMT
Last-Modified
Thu, 07 Sep 2023 08:52:44 GMT
Server
nginx/1.22.1
ETag
"64f98f5c-2dc"
Content-Type
image/png
Connection
keep-alive
Accept-Ranges
bytes
Content-Length
732

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.

function| $ function| jQuery object| bootstrap

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