indexo.dev

ndk.cz

.cz crawl

First seen 2026-05-27 · Last seen 2026-05-29 · ok HTTP/1.1 200 294 ms crawled 2026-05-30

CZ · 195.113.134.56 · AS2852 CESNET z.s.p.o.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
Digitální knihovna Kramerius
Language
cs

Technology

Server
nginx

DNS records live

NS
  • ns1.nkp.cz
  • nsa.ces.net
MX
  • 90 fm2.nkp.cz
Verified for
  • Microsoft 365

Email authentication weak

SPF
v=spf1 mx a include:spf.protection.outlook.com -all
strict (-all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

GEANT TLS RSA 1
from 2025-11-24 to 2026-11-24
Expires in 177 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://ndk.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=63072000; includeSubdomains; preload

Linked from (2)