indexo.dev

ceskadigitalniknihovna.cz

.cz crawl

First seen 2026-05-27 · Last seen 2026-05-31 · ok HTTP/1.1 200 373 ms crawled 2026-05-30

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

DNS records live

NS
  • ns.web4u.cz
  • ns2.web4u.cz
MX
  • 10 ag1.cesnet.cz
  • 20 ag2.cesnet.cz
Verified for
  • Google

Email authentication weak

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

Certificate (current)

R13
from 2026-05-12 to 2026-08-10
Expires in 70 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://ceskadigitalniknihovna.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 (2)