seduo.cz

.cz crawl

First seen 2026-05-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 14414 ms crawled 2026-05-17

US · 35.71.162.162 · AS16509 Amazon.com, Inc.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title: Firemní vzdělávání pro zaměstnance – Seduo.cz
Description: Největší česká online vzdělávací platforma. Nejvíce vzdělávacích témat pro profesní a osobní rozvoj na jednom místě. TOP lektoři. Vyzkoušejte ho zdarma.
Language: cs

Technology

CMS: Next.js

Analytics

Google Tag Manager

Third-party hosts loaded (5)

assets.seduo.com×38
seduocz.educdn.cz×4
www.googletagmanager.com×3
video-thumbnails.seduo.com×1
videos.seduo.com×1

Social

Contact

Email

Phone

#+420 210 013 000

Registration

Registrar

REG-GRANSY

Created

2013-09-17

Expires

2026-09-16 119 days left

Updated

2024-11-26

Name servers

ns-117.awsdns-14.com
ns-1376.awsdns-44.org
ns-1782.awsdns-30.co.uk
ns-844.awsdns-41.net

DNS records live

NS

ns-117.awsdns-14.com
ns-1376.awsdns-44.org
ns-1782.awsdns-30.co.uk
ns-844.awsdns-41.net

MX

10 seduo-cz.mail.protection.outlook.com

TXT

Show 6 TXT records

google-site-verification=3DcGe1n42awS2rK8b-B82gQGENfdIe0_fLEiQIytFtM
google-site-verification=GGh7CeV4b3LdZoH2BJY5Q1Y3WpX93WC5dl_oWfn4kWI
google-site-verification=V0hQNyL-OuqX6on-bboNiNik0wV2gcAejZoF37g3QG8
MS=ms36602458
MS=ms50930069
facebook-domain-verification=fm9t4i1f8c204jo544t0wccu1ai19j

Email authentication partial

SPF: v=spf1 include:spf.lmc.eu ip4:82.113.44.1 ip4:185.120.71.185 include:spf.mandrillapp.com include:mail.zendesk.com include:_spf.eu.sparkpostmail.com ~all
softfail (~all)
DMARC: v=DMARC1; p=none; rua=mailto:dmarc@h8wkjd33.uriports.com; ruf=mailto:dmarc@h8wkjd33.uriports.com; fo=1:d:s
policy: none (monitoring only)
DKIM: no key found at common selectors

Certificate (current)

Amazon RSA 2048 M01

from 2025-11-04 to 2026-12-04

Expires in 198 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.seduo.cz/

findings

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