indexo.dev

holgerscode.com

.com crawl

First seen 2026-04-15 · Last seen 2026-05-10 · ok HTTP/1.1 200 1497 ms crawled 2026-05-10

US · 74.208.236.118 · AS8560 IONOS SE

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title
Holger's Code
Description
Software Development, Training & Consulting by FlixEngineering, LLC
Language
en
Generator
mkdocs-1.6.1, mkdocs-material-9.6.6+insiders-4.53.15
Canonical
https://www.holgerscode.com/
Feeds

Technology

CDN
Fastly
Server
GitHub.com

Social

Registration

Registrar
IONOS SE
Created
2023-06-17
Expires
2026-06-17 29 days left
Updated
2025-06-17
Name servers
  • ns1046.ui-dns.org
  • ns1076.ui-dns.biz
  • ns1085.ui-dns.de
  • ns1086.ui-dns.com

DNS records live

NS
  • ns1046.ui-dns.org
  • ns1076.ui-dns.biz
  • ns1085.ui-dns.de
  • ns1086.ui-dns.com
MX
  • 10 mx00.ionos.com
  • 10 mx01.ionos.com
TXT
  • google-site-verification=Cu8qfXPILvPltQuCopj5tNw_KRbYm37AsVpTPqCmP-o

Email authentication partial

SPF
v=spf1 include:_spf-us.ionos.com ~all
softfail (~all)
DMARC
v=DMARC1; p=none;
policy: none (monitoring only)
DKIM
no key found at common selectors

Certificates

Loading certificate

HTTP security headers

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

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

Links to (3)

Linked from (2)