indexo.dev

derf0.net

.net dns

First seen 2026-05-04 · Last seen 2026-05-11 · ok HTTP/1.1 200 3847 ms crawled 2026-05-11

DE · 116.202.24.244 · AS24940 Hetzner Online GmbH

Reputation 62/100 wrong cert weak security headers no dmarc policy

Classifying

HTML metadata

Title
sentinel.derf0.net

Technology

Server
nginx

Registration

Registrar
INWX GmbH
Created
2010-07-14
Expires
2026-07-14 54 days left
Updated
2025-07-15
Name servers
  • ns.inwx.de
  • ns2.inwx.de
  • ns3.inwx.de

DNS records live

NS
  • ns.inwx.de
  • ns2.inwx.de
  • ns3.inwx.de
MX
  • 10 nocturne.derf0.net
  • 5 sentinel.derf0.net

Email authentication weak

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

Certificate (current) wrong cert

E8
from 2026-04-20 to 2026-07-19
Expires in 59 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 45/100 Checked over plain HTTP: http://derf0.net/

present
  • x-frame-options
findings
  • checked over plain HTTP
  • missing Content Security Policy
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
sameorigin