gkfp.de

HTML metadata

Technology

Server

nginx

CMS

Joomla

Analytics

• Google Tag Manager

Third-party hosts loaded (3)

• code.jquery.com×2
• stackpath.bootstrapcdn.com×1
• www.googletagmanager.com×1

Social

• instagram
• linkedin
• youtube

Contact

Email

• info@gkfp.de

Phone

• +492284798000

Registration

Updated

2026-02-26

Name servers

• ns1.domainoffensive.de.
• ns2.domainoffensive.eu.
• ns3.domainoffensive.net.

DNS records live

NS

• ns1.domainoffensive.de
• ns2.domainoffensive.eu
• ns3.domainoffensive.net

MX

• 10 mx01.hornetsecurity.com
• 20 mx02.hornetsecurity.com
• 30 mx03.hornetsecurity.com
• 40 mx04.hornetsecurity.com

TXT

• MS=ms41622066
• brevo-code:5184959b37c77d90baef9e1f7704b1a9

Email authentication strong

SPF

v=spf1 ip4:49.12.47.125 include:spf.protection.outlook.com include:spf.hornetsecurity.com include:spf.nl2go.com include:spf.brevo.com -all

strict (-all)

DMARC

v=DMARC1; p=quarantine; pct=100; rua=mailto:rua@dmarc.brevo.com

policy: quarantine

DKIM

• mail: k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDeMVIzrCa3T14JsNY0IRv5/2V1/v2itlviLQBwXsa7shBD6TrBkswsFUToPyMRWC9tbR/5ey0nRBH0ZVxp+lsmTxid2Y2z…

selectors probed

Certificate (current)

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 75/100 Checked live page: https://www.gkfp.de

present

• strict-transport-security
• x-frame-options
• x-content-type-options
• referrer-policy

findings

• missing Content Security Policy
• missing Permissions Policy

Links to (5)

• instagram.com×2
• linkedin.com×2
• lmy.de×2
• youtube.com×2
• youtu.be×1

Linked from (2)

• prowindo.de×2
• ralfenster.de×2