stadtwerke-flensburg.de

.de crawl dns

First seen 2026-04-13 · Last seen 2026-05-20 · ok HTTP/1.1 200 662 ms crawled 2026-05-06

DE · 31.209.184.11 · AS56737 Stadtwerke Flensburg GmbH

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title: Stadtwerke Flensburg: Energieversorger aus dem Norden | Stadtwerke Flensburg
Description: Bundesweit mit Energie versorgt. Strom, Erdgas, Fernwärme, Trinkwasser, Glasfaser und Elektromobilität sowie Solarangebote der Stadtwerke Flensburg.
Language: de
Generator: TYPO3 CMS
Canonical: https://www.stadtwerke-flensburg.de/

Open Graph

title: Moin und willkommen bei den Stadtwerken Flensburg
locale: de_DE
image:url: https://www.stadtwerke-flensburg.de/fileadmin/_processed_/3/8/csm_buehne_startseite_segelboot_43a3a45531.jpg
site name: Stadtwerke Flensburg
description: Gemeinsam nehmen wir Kurs auf die Energiewende und eine klimaneutrale Zukunft.

Technology

Server: nginx

Third-party hosts loaded (2)

cdn.consentmanager.net×1
code.etracker.com×1

Social

Contact

Phone

04614874440

Registration

Updated

2025-06-03

Name servers

ns1.lemarit.de.
ns1.lemarit.net.
ns2.lemarit.de.
ns2.lemarit.net.
ns3.lemarit.de.

DNS records live

NS

ns1.lemarit.de
ns1.lemarit.net
ns2.lemarit.de
ns2.lemarit.net
ns3.lemarit.de

MX

10 relay.stadtwerke-flensburg.de

TXT

Show 4 TXT records

bjpfmrccg8k3n6h3rbwjgbgp4bczllgg
amazonses:YakdQIUTQbOzHXS32g3XXMRkJ4224GXi6y8IknQhx04=
_qtl58uutw0l52u84z7ubud3j3opcde5
9y33n4dhvbx78rjf89zz48wyfy9608xj

Verified for

Atlassian

Email authentication partial

SPF

v=spf1 include:spf.mailjet.com ip4:31.209.184.0/24 ip4:213.133.97.135/32 ip4:185.39.85.56/32 include:spf.protection.outlook.com include:spf.de.exclaimer.net -all

strict (-all)

DMARC

not published

DKIM

s1: v=DKIM1; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwAFmmas8YFjRzJRVO/jtprB3Jeq3+IzKrn+eIFsDADlWT7KprTHqjR6Jv6RDIuCEpZrakfNtaekbM2ka…

selectors probed

Certificate (current)

RapidSSL TLS RSA CA G1

from 2025-11-25 to 2026-12-27

Expires in 220 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 60/100 Checked live page: https://www.stadtwerke-flensburg.de/

present

strict-transport-security
x-content-type-options

findings

missing Content Security Policy
missing frame protection
missing Referrer Policy
missing Permissions Policy

Header values

x-content-type-options: nosniff
strict-transport-security: max-age=31536000; includeSubDomains; always