indexo.dev

gtn-online.de

.de crawl

First seen 2026-05-08 · Last seen 2026-05-08 · ok HTTP/1.1 200 1809 ms crawled 2026-05-15

DE · 85.215.134.45 · AS8560 IONOS SE

Reputation 100/100

Classifying

HTML metadata

Title
GTN – Ingenieure & Geowissenschaftler
Description
Die Geothermie Neubrandenburg GmbH (GTN) ist ein international tätiges Beratungs- und Planungsbüro mit engagierten Ingenieuren und Geologen.
Language
de
Generator
WordPress 6.9.4
Canonical
https://gtn-online.de/
Feeds

Technology

Server
nginx
CMS
WordPress
Fonts
  • Google Fonts

Third-party hosts loaded (1)

  • fonts.googleapis.com×3

Contact

Email
Phone

Registration

Updated
2026-05-05
Name servers
  • mail.regionalnetz.de.
  • pdns02.domaincontrol.com.

DNS records live

NS
  • mail.regionalnetz.de
  • pdns02.domaincontrol.com
MX
  • 0 gtnonline-de0i.mail.protection.outlook.com
Verified for
  • Microsoft 365

Email authentication strong

SPF
v=spf1 ip4:195.93.192.193 include:spf.protection.outlook.com -all
strict (-all)
DMARC
v=DMARC1;p=reject;sp=reject;pct=100;adkim=s;aspf=s;fo=1;rua=mailto:dmarc@cowi.com;ruf=mailto:dmarc@cowi.com
policy: reject (enforced) · sp=reject
DKIM
  • selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsKDxCoB4AOpavz0TY33i4zzxTFX3LZULXEQroikNwVxEnca7g2hco2bgawzzJibkIre6jVrZ0Co/83…
  • selector2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA83LXLwHASye7WFyLOB5ICSrrrttex8AB0ilbjHqge9aXUiPu+8xUDx5gkxYIdqxZ7Q0kfbH/BB3zHz…
selectors probed

Certificate (current)

R13
from 2026-04-16 to 2026-07-15
Expires in 56 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://gtn-online.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=15768000; includeSubDomains

Linked from (1)