digitalniknihovna.cz

.cz crawl

First seen 2026-05-23 · Last seen 2026-05-27 · ok HTTP/1.1 200 827 ms crawled 2026-05-28

CZ · 195.113.155.82 · AS2852 CESNET z.s.p.o.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title: Digitální knihovna Kramerius
Language: cs

Registration

Registrar

REG-WEB4U

Created

2016-02-14

Expires

2027-02-13 257 days left

Updated

2020-07-02

Name servers

ns2.web4u.cz
ns.web4u.cz

DNS records live

NS

ns.web4u.cz
ns2.web4u.cz

MX

10 mx1.mailchannels.net
10 mx2.mailchannels.net

Verified for

Google

Email authentication weak

SPF: not published
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

R12

from 2026-05-25 to 2026-08-23

Expires in 83 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://www.digitalniknihovna.cz/

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=15724800; includeSubDomains

Linked from (3)