indexo.dev

rueckertheizung.de

.de crawl

First seen 2026-05-14 · Last seen 2026-05-14 · ok HTTP/1.1 200 4655 ms crawled 2026-05-19

DE · 84.46.71.25 · AS15943 wilhelm.tel GmbH

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
Arnold Rückert GmbH |
Generator
Drupal 7 (https://www.drupal.org)
Canonical
https://rueckertheizung.de/

Technology

Server
nginx
CMS
Drupal

Third-party hosts loaded (1)

  • s3.amazonaws.com×1

Social

Contact

Email
Phone

Registration

Updated
2023-01-30
Name servers
  • ns1.nameservercade.de.
  • ns2.nameservercade.de.

DNS records live

NS
  • ns1.nameservercade.de
  • ns2.nameservercade.de
MX
  • 100 rueckertheizung-de.mail.protection.outlook.com
Verified for
  • Microsoft 365

Email authentication weak

SPF
v=spf1 a ip4:193.218.16.70/32 include:spf.protection.outlook.com -all
strict (-all)
DMARC
not published
DKIM
  • selector1: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCzwO9480o/oYhfE8jPs2qyKwbdcezQ8zsFpNN6xWLoc8oTx2ZG4CRBaz2AIRu+W/cxWCJot39lE5JciFJd/F…
selectors probed

Certificate (current)

R13
from 2026-05-15 to 2026-08-13
Expires in 85 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://rueckertheizung.de/

present
  • x-frame-options
  • x-content-type-options
findings
  • missing HSTS
  • missing Content Security Policy
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
SAMEORIGIN
x-content-type-options
nosniff

Links to (9)

Linked from (1)