indexo.dev

cduplus.de

.de crawl

First seen 2026-04-23 · Last seen 2026-05-14 · ok HTTP/1.1 200 11749 ms crawled 2026-05-17

DE · 193.219.105.156 · AS3320 Deutsche Telekom AG

Reputation 94/100 dmarc monitor-only

sector other type homepage

HTML metadata

Title
CDUplus

Technology

Server
CDUPLUS-Live-FE

Registration

Updated
2016-04-08
Name servers
  • ns1.cdu.de.
  • pns.dtag.de.
  • secondary006.dtag.net.

DNS records live

NS
  • ns1.cdu.de
  • pns.dtag.de
  • secondary006.dtag.net
MX
  • 5 mail48.cdu.de
Verified for
  • Microsoft 365

Email authentication partial

SPF
v=spf1 ip4:193.219.105.0/24 include:inxserver.com include:spf.protection.outlook.com -all
strict (-all)
DMARC
v=DMARC1; p=none; rua=mailto:dmarc@ubgnet.de!10m; ruf=mailto:dmarc@ubgnet.de!10m; fo=1
policy: none (monitoring only)
DKIM
  • selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA7x2/HBCYe9uc+JA7C8fdgil5UPG0i6sNeLb7IF1/2gfgP4ENwCZ8/EvBvcSpRlVKu+z1jXnw1JGobu…
  • mail: v=DKIM1; h=sha256; k=rsa; t=y; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAz+6HPS/pKntHAEK9UaqPYVV6O5mLgYabOptBWKOoNH0JLifMbjWwYlCQm4gq1vx…
selectors probed

Certificate (current)

E7
from 2026-04-20 to 2026-07-19
Expires in 59 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 70/100 Checked live page: https://cduplus.de/

present
  • strict-transport-security
  • content-security-policy
findings
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
content-security-policy
upgrade-insecure-requests
strict-transport-security
max-age=31536000; includeSubDomains; preload;

Linked from (1)