indexo.dev

kristek-jan.cz

.cz crawl

First seen 2026-06-02 · Last seen 2026-06-02 · ok HTTP/1.1 200 230 ms crawled 2026-06-02

CZ · 217.11.249.141 · AS15685 CASABLANCA INT a.s.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title
Jan Kristek
Description
O vzniku a vvoji lidsk spolenosti trochu jinak. Knihy, men prce, lnky aj., ve ke staen, v prav k tisku.

Technology

Server
Apache

Social

DNS records live

NS
  • ns2.blueboard.cz
  • shinzon.blueboard.cz
MX
  • 10 jaguar.blueboard.cz

Email authentication partial

SPF
v=spf1 a mx include:spf.blueboard.cz -all
strict (-all)
DMARC
v=DMARC1; p=none
policy: none (monitoring only)
DKIM
no key found at common selectors

Certificate (current)

E7
from 2026-04-01 to 2026-06-30
Expires in 25 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://kristek-jan.cz/

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

Links to (6)

Linked from (1)