indexo.dev

gmc-instruments.de

.de crawl

First seen 2026-04-12 · Last seen 2026-05-19 · ok HTTP/1.1 200 170 ms crawled 2026-05-07

DE · 212.63.143.122 · AS8741 ratiokontakt GmbH

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
GOSSEN METRAWATT, GMC-Instruments

Technology

Server
nginx

Third-party hosts loaded (1)

  • www.gossenmetrawatt.de×1

Registration

Updated
2026-02-20
Name servers
  • ns11.nameserver.de.
  • ns12.nameserver.de.

DNS records live

NS
  • ns11.nameserver.de
  • ns12.nameserver.de
MX
  • 10 mail1.datagroup-bs.de
  • 20 mail2.datagroup-bs.de

Email authentication weak

SPF
v=spf1 include:spf.mailjet.com include:gossenmetrawatt.com ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R12
from 2026-04-15 to 2026-07-14
Expires in 55 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://gmc-instruments.de/

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

Linked from (4)