indexo.dev

hans-christian-otto.de

.de crawl

First seen 2026-04-30 · Last seen 2026-04-30 · ok HTTP/1.1 200 395 ms crawled 2026-05-08

US · 76.76.21.21 · AS16509 Amazon.com, Inc.

Reputation 92/100 no dmarc policy

sector other type parked

HTML metadata

Generator
Gatsby 2.31.1

Technology

CDN
Vercel
CMS
Gatsby

Social

Registration

Updated
2019-11-15
Name servers
  • ara.ns.cloudflare.com.
  • damon.ns.cloudflare.com.

DNS records live

NS
  • ara.ns.cloudflare.com
  • damon.ns.cloudflare.com
MX
  • 0 aspmx.l.google.com

Email authentication weak

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

Certificate (current)

R13
from 2026-04-22 to 2026-07-21
Expires in 61 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://hans-christian-otto.de/

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

Links to (2)

Linked from (1)