indexo.dev

ahlmann-zerssen.com

.com crawl

First seen 2026-05-09 · Last seen 2026-05-09 · ok HTTP/1.1 200 2171 ms crawled 2026-05-16

US · 172.67.131.219 · AS13335 Cloudflare, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
Home
Language
en
Generator
Contao Open Source CMS
Canonical
https://ahlmann-zerssen.com/en/home

Technology

CDN
Cloudflare

Third-party hosts loaded (3)

  • ajax.googleapis.com×1
  • consent.cookiefirst.com×1
  • maxcdn.bootstrapcdn.com×1

Social

Contact

Phone
Address
Am Kreishafen 1424768 RendsburgGermany

Registration

Registrar
Cloudflare, Inc.
Created
2008-03-20
Expires
2027-03-20 303 days left
Updated
2025-09-19
Name servers
  • sima.ns.cloudflare.com
  • vern.ns.cloudflare.com

DNS records live

NS
  • sima.ns.cloudflare.com
  • vern.ns.cloudflare.com

Email authentication no MX

SPF
v=spf1 -all
strict (-all)
DMARC
v=DMARC1; p=reject; pct=100; ruf=mailto:0gqjnavp@fr.eu.dmarcian.com; rua=mailto:0gqjnavp@ag.eu.dmarcian.com; adkim=r; aspf=r; fo=1
policy: reject (enforced)
DKIM
Show 12 DKIM selectors
  • default: v=DKIM1; p=
  • google: v=DKIM1; p=
  • selector1: v=DKIM1; p=
  • selector2: v=DKIM1; p=
  • k1: v=DKIM1; p=
  • k2: v=DKIM1; p=
  • mail: v=DKIM1; p=
  • dkim: v=DKIM1; p=
  • s1: v=DKIM1; p=
  • s2: v=DKIM1; p=
  • mxvault: v=DKIM1; p=
  • smtpapi: v=DKIM1; p=
selectors probed

Certificate (current)

WE1
from 2026-05-13 to 2026-08-11
Expires in 83 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 80/100 Checked live page: https://ahlmann-zerssen.com/en/home

present
  • strict-transport-security
  • x-frame-options
  • x-content-type-options
  • referrer-policy
  • permissions-policy
findings
  • missing Content Security Policy
Header values
referrer-policy
no-referrer-when-downgrade, strict-origin-when-cross-origin
x-frame-options
SAMEORIGIN
permissions-policy
interest-cohort=()
x-content-type-options
nosniff
strict-transport-security
max-age=15768000; includeSubDomains

Links to (2)