indexo.dev

gkolin.cz

.cz crawl

First seen 2026-05-31 · Last seen 2026-06-01 · ok HTTP/1.1 200 662 ms crawled 2026-06-01

CZ · 88.86.119.233 · AS39392 SH.cz s.r.o.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
Gymnázium Kolín
Description
Gymnázium Kolín
Language
cs
Generator
CronosWeb: https://www.amporis.cz/
Canonical
https://gkolin.cz
Feeds

Open Graph

url
https://gkolin.cz
title
Gymnázium Kolín
locale
cs_CZ
site name
Gymnázium Kolín
description
Gymnázium Kolín

Technology

Server
-
Fonts
  • Google Fonts

Third-party hosts loaded (3)

  • fonts.googleapis.com×2
  • cdn.jsdelivr.net×1
  • fonts.gstatic.com×1

Social

Contact

Email
Phone

DNS records live

NS
  • ns1.websupport.cz
  • ns2.websupport.cz
  • ns3.websupport.eu
MX
  • 0 gkolin-cz.mail.protection.outlook.com
Verified for
  • Apple
  • Google

Email authentication weak

SPF
v=spf1 a:postak.jon.cz include:spf.protection.outlook.com -all
strict (-all)
DMARC
not published
DKIM
  • selector1: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDCm+lemtDMQudnfiuqiKyAyuO87XdKO11BAVSOpUy7ZKMq6b3dkF1g+Xx6qTazh71wdO1GziM28JrdyPfsSj…
selectors probed

Certificate (current)

YR1
from 2026-05-30 to 2026-08-28
Expires in 86 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 100/100 Checked live page: https://gkolin.cz/

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
  • x-content-type-options
  • referrer-policy
  • permissions-policy
Header values
referrer-policy
no-referrer-when-downgrade
x-frame-options
SAMEORIGIN
permissions-policy
accelerometer=(), camera=(), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), payment=(), usb=()
x-content-type-options
nosniff
content-security-policy
upgrade-insecure-requests
strict-transport-security
max-age=31536000; includeSubDomains; preload

Links to (14)

Linked from (1)