indexo.dev

oper-frankfurt.de

.de crawl

First seen 2026-04-16 · Last seen 2026-05-20 · ok HTTP/1.1 200 2459 ms crawled 2026-05-11

DE · 91.99.21.217 · AS24940 Hetzner Online GmbH

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
Oper Frankfurt
Description
Offizielle Homepage der Oper Frankfurt
Language
de
Generator
e-publisher:stage from 3pc, http://e-publisher.de

Technology

Server
Apache

Contact

Phone

Registration

Updated
2016-04-26
Name servers
  • ns1.3pc-dns.de.
  • ns2.3pc-dns.de.

DNS records live

NS
  • ns1.3pc-dns.de
  • ns2.3pc-dns.de
MX
  • 10 mx1.agenturserver.de
  • 10 mx2.agenturserver.de
  • 20 mx3.agenturserver.de
  • 50 mx4.agenturserver.de

Email authentication weak

SPF
v=spf1 include:agenturserver.de -all
strict (-all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

E7
from 2026-05-04 to 2026-08-02
Expires in 74 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 60/100 Checked live page: https://oper-frankfurt.de/

present
  • strict-transport-security
  • x-frame-options
findings
  • missing Content Security Policy
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
SAMEORIGIN
strict-transport-security
max-age=31536000; includeSubDomains

Links to (5)

Linked from (3)