What technology does bistummainz.de use?

We did not detect any specific technologies for bistummainz.de in the latest scan.

Is bistummainz.de secure (HTTPS)?

Yes. bistummainz.de uses TLS 1.3 with a certificate issued by Sectigo Limited, valid until Dec 11, 2026.

Who hosts bistummainz.de?

bistummainz.de is hosted on Optitrust - Optitrust GmbH, DE.

What is bistummainz.de's SEO score?

bistummainz.de scored 80/100 for SEO in the latest analysis (great).

What is bistummainz.de's overall website score?

bistummainz.de has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.

What company operates bistummainz.de?

bistummainz.de is operated by Bistum Mainz. Das Bistum Mainz heißt Sie willkommen.

bistummainz.de

Bistum Mainz Startportal

Last scanned Aug 24, 2026, 1:22 PM · 1 view

Overall score

Great

Summary

Das Bistum Mainz heißt Sie willkommen. This website is hosted on Optitrust - Optitrust GmbH, DE. SEO is good (80/100) and accessibility is excellent (90/100). Security scores excellent (90/100) and performance excellent (90/100). Top issue: No H1 heading found.

Bistum Mainz

Das Bistum Mainz heißt Sie willkommen.

Bischofsplatz 2, Mainz, 55116

Hosted on Optitrust - Optitrust GmbH, DE

Top issues to fix

5 issues found · 2 high priority

Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEO
Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
robots.txt not found
SEO
Publish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEO
Publish an XML sitemap and reference it from robots.txt to speed up page discovery.
6 broken links on the page
SEO
Fix or remove broken links — they waste crawl budget and erode user trust.

SEO

3 issue(s) found

Performance

183 ms

Security

HTTPS & header checks

Accessibility

1 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

Bistum Mainz

Das Bistum Mainz heißt Sie willkommen.

Facebook Instagram YouTube YouTube

Contact

Email, phone, and address published on this site's own pages.

Phone: 06131 / 253-0 06131/253-0 06131/253-890
Address: Bischofsplatz 2, Mainz, 55116

Meta tags

Title: Bistum Mainz Startportal
Description: Das Bistum Mainz heißt Sie willkommen.
Canonical: https://bistummainz.de/portal/index.html
Language: de
Charset: UTF-8
Viewport: width=device-width, initial-scale=1.0, viewport-fit=cover
Robots meta: index, follow
Manifest

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

Hosting & CDN

Hosting provider: Optitrust - Optitrust GmbH, DE
CDN provider: —
IP address: 188.64.57.36
ASN: AS200062 (Optitrust - Optitrust GmbH, DE)

DNS records

Type	Value
A	188.64.57.36
AAAA	—
MX	mail.bistummainz.de
TXT	v=spf1 a mx ip4:37.202.1.53 ip4:188.64.57.23 include:_spf.internet1.de ~all
NS	ns2.internet1.de ns.internet1.de ns3.internet1.de
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Sectigo Limited
Subject: *.bistummainz.de
Valid from: Nov 10, 2025
Valid to: Dec 11, 2026
Days until expiry: 108
SAN domains: *.bistummainz.de, bistummainz.de

Security headers

Strict-Transport-SecurityEnabled
Content-Security-PolicyMissing
X-Frame-OptionsEnabled
X-Content-Type-OptionsEnabled
Referrer-PolicyEnabled
Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 18 · H3 17

Links

164 internal · 8 external · 6 broken

Images

39 total · 0 missing alt

Scripts / Styles

6 scripts · 2 stylesheets

JS / CSS size

962 KB · 409 KB

Page size

125 KB

Robots.txt & Sitemap

robots.txt: Not found
Disallow rules: 0
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

No H1 heading found
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://bistummainz.de
Final URL: https://bistummainz.de
HTTP status: 200
HTTP version: HTTP/2
Response time: 181 ms
HTML size: 125 KB
Redirect chain: https://bistummainz.de

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Optitrust - Optitrust GmbH, DE

Frequently asked questions

What technology does bistummainz.de use?: We did not detect any specific technologies for bistummainz.de in the latest scan.
Is bistummainz.de secure (HTTPS)?: Yes. bistummainz.de uses TLS 1.3 with a certificate issued by Sectigo Limited, valid until Dec 11, 2026.
Who hosts bistummainz.de?: bistummainz.de is hosted on Optitrust - Optitrust GmbH, DE.
What is bistummainz.de's SEO score?: bistummainz.de scored 80/100 for SEO in the latest analysis (great).
What is bistummainz.de's overall website score?: bistummainz.de has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.
What company operates bistummainz.de?: bistummainz.de is operated by Bistum Mainz. Das Bistum Mainz heißt Sie willkommen.