indexo.dev

einstruktor.cz

.cz crawl

First seen 2026-06-03 · Last seen 2026-06-03 · ok HTTP/1.1 200 513 ms crawled 2026-06-03

CZ · 178.22.117.122 · AS197013 Sprintel s.r.o.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Language
cs

Technology

Server
nginx
Fonts
  • Google Fonts

Third-party hosts loaded (3)

  • fonts.googleapis.com×2
  • fonts.gstatic.com×1
  • kit.fontawesome.com×1

Social

Registration

Registrar
REG-WEBGLOBE
Created
2017-10-02
Expires
2026-10-01 118 days left
Updated
2018-10-01
Name servers
  • ns.stable.cz
  • ns.stable.sk

DNS records live

NS
  • ns.stable.cz
  • ns.stable.sk
MX
  • 10 mx.stable.sk
  • 5 mx.stable.cz

Email authentication partial

SPF
v=spf1 include:spf.mandrillapp.com ?all
neutral (?all)
DMARC
v=DMARC1; p=none;
policy: none (monitoring only)
DKIM
  • default: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC3UTPPdJUDy9Bg8ARLnlNgvjYEVdgOeuwXZqyxFXS6yYQi47vcLEGBPVSJVjycXzll+7TTqCENl/kkaYBIi8…
selectors probed

Certificate (current)

R13
from 2026-04-30 to 2026-07-29
Expires in 54 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://einstruktor.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=16000000; includeSubDomains; preload;

Links to (3)

Linked from (1)