indexo.dev

ondrejcertik.com

.com crawl

First seen 2026-04-15 · Last seen 2026-05-07 · ok HTTP/1.1 200 406 ms crawled 2026-05-09

US · 185.199.108.153 · AS54113 Fastly, Inc.

Reputation 87/100 weak security headers no dmarc policy

sector tech type blog

HTML metadata

Title
Ondřej Čertík | Ondřej Čertík's Webpage
Description
Principal Software Engineer at Microsoft
Language
en
Generator
Hugo 0.138.0

Open Graph

title
Ondřej Čertík | Ondřej Čertík's Webpage
description
Principal Software Engineer at Microsoft

Technology

CDN
Fastly
Server
GitHub.com
CMS
Hugo
Analytics
  • Google Tag Manager
Fonts
  • Google Fonts

Third-party hosts loaded (6)

  • cdnjs.cloudflare.com×6
  • cdn.jsdelivr.net×2
  • fonts.googleapis.com×2
  • unpkg.com×2
  • code.jquery.com×1
  • www.googletagmanager.com×1

Social

Registration

Registrar
NameCheap, Inc.
Created
2009-08-16
Expires
2027-08-16 453 days left
Updated
2025-12-23
Name servers
  • ns1.linode.com
  • ns2.linode.com
  • ns3.linode.com

DNS records live

NS
  • ns1.linode.com
  • ns2.linode.com
  • ns3.linode.com
  • ns4.linode.com
  • ns5.linode.com
MX
  • 10 mail.ondrejcertik.com

Email authentication weak

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

Certificate (current)

R12
from 2026-04-22 to 2026-07-21
Expires in 63 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://ondrejcertik.com/

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

Links to (10)

Linked from (1)