mainzer-fernwaerme.de

.de crawl

First seen 2026-04-14 · Last seen 2026-05-08 · ok HTTP/1.1 200 900 ms crawled 2026-05-08

DE · 193.25.234.222 · AS15550 COUNT+CARE Verwaltungs GmbH

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title: Mainzer Fernwärme – Ihr Fernwärmeversorger in Mainz
Description: Seit 1960 sind wir der Fernwärmeversorger in Mainz ✔ Tochtergesellschaft der Mainzer Stadtwerke AG ✔ Mehr als 2.500 Kunden ➤ Jetzt informieren!
Language: de-DE
Canonical: https://www.mainzer-fernwaerme.de

Open Graph

url: https://www.mainzer-fernwaerme.de/
title: Mainzer Fernwärme – Ihr Fernwärmeversorger in Mainz

Technology

Third-party hosts loaded (1)

translate-cdn.eye-able.com×1

Social

Contact

Phone

+4961312170610

Registration

Updated

2020-11-04

Name servers

ns81.domaincontrol.com.
ns82.domaincontrol.com.

DNS records live

NS

ns81.domaincontrol.com
ns82.domaincontrol.com

MX

100 mxlb.ispgateway.de

Verified for

Google

Email authentication weak

SPF: v=spf1 mx a include:ispgateway.de ~all
softfail (~all)
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

Starfield Secure Certificate Authority - G2

from 2025-08-21 to 2026-08-21

Expires in 93 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 85/100 Checked live page: https://www.mainzer-fernwaerme.de/

present

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

findings

missing frame protection
missing Permissions Policy

Header values

referrer-policy: strict-origin-when-cross-origin
x-content-type-options: nosniff
content-security-policy: frame-ancestors 'self';
strict-transport-security: max-age=157680000; includeSubdomains; preload