portal.cz

.cz crawl

First seen 2026-05-21 · Last seen 2026-05-31 · ok HTTP/1.1 200 2823 ms crawled 2026-05-28

CZ · 90.182.165.21 · AS5610 O2 Czech Republic, a.s.

Reputation 100/100

Classifying

HTML metadata

Title: Hlavní stránka | Nakladatelství Portál
Description: Web Nakladatelství Portál
Language: cs

Open Graph

url: https://nakladatelstvi.portal.cz/
site name: Nakladatelství Portál

Technology

Server: nginx
CMS: Nuxt

Analytics

Google Tag Manager

Third-party hosts loaded (1)

www.googletagmanager.com×1

Social

Contact

Phone

+420 283 028 111

Registration

Registrar

REG-ACTIVE24

Created

1998-05-17

Expires

2026-10-11 132 days left

Updated

2024-10-14

Name servers

ns1.websupport.cz
ns2.websupport.cz
ns3.websupport.eu

DNS records live

NS

ns1.websupport.cz
ns2.websupport.cz
ns3.websupport.eu

MX

10 mail.portal.cz
5 libra.portal.cz

TXT

_c7yep6piggxjlvijtu5c1ws7fdt6ou4
MS=314AC49B986C2FB8DFA98078C08551BCC513F7FD
201709071411525tfzps7w3pqqn7svo7fe3xu73gt5uh46khsxu4m5xe9fg833q8

Verified for

Meta

Email authentication strong

SPF: v=spf1 mx a ip4:90.182.165.18 ip4:90.182.165.19 a:portal.cz a:mail.portal.cz include:_emailing.heureka.cz ~all
softfail (~all)
DMARC: v=DMARC1; p=quarantine; rua=mailto:spravce@portal.cz; ruf=mailto:spravce@portal.cz; adkim=r; aspf=r; sp=none; rf=iodef; fo=1
policy: quarantine · sp=none
DKIM: no key found at common selectors

Certificate (current)

R13

from 2026-03-30 to 2026-06-28

Expires in 28 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://nakladatelstvi.portal.cz/nakladatelstvi

present

strict-transport-security

findings

missing Content Security Policy
missing frame protection
missing content type protection
missing Referrer Policy
missing Permissions Policy

Header values

strict-transport-security: max-age=31536000