indexo.dev

lehrer-online.de

.de crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 4817 ms crawled 2026-05-19

DE · 138.201.50.218 · AS24940 Hetzner Online GmbH

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title
Lehrer-Online: Arbeitsblätter, Unterrichtsmaterial, Entwürfe
Language
de-DE
Generator
TYPO3 CMS
Feeds

Technology

Server
nginx

Third-party hosts loaded (1)

  • cdn.adspirit.de×3

Social

Contact

Email

Registration

Updated
2018-12-20
Name servers
  • ns1.oberdieck.com.
  • ns2.oberdieck.com.
  • ns3.oberdieck.com.
  • ns4.oberdieck.com.

DNS records live

NS
  • ns1.oberdieck.com
  • ns2.oberdieck.com
  • ns3.oberdieck.com
  • ns4.oberdieck.com
MX
  • 10 lehreronline-de01e.mail.protection.outlook.com
TXT
  • stripe-verification=76dc71ac95a85885c3be9b47eb36163ef4d194f714b66f08658cbf9b74a15296
  • MS=ms60762245

Email authentication partial

SPF
v=spf1 a mx ptr ip4:89.191.78.0/24 ip4:82.165.112.33 include:spf.protection.outlook.com include:spf.crsend.com ip4:185.98.184.0/24 ip4:80.82.206.0/26 ip4:188.40.30.118 include:emsd1.com include:_spf.sendnode.com ~all
softfail (~all)
DMARC
v=DMARC1;p=none;
policy: none (monitoring only)
DKIM
no key found at common selectors

Certificate (current)

Thawte TLS RSA CA G1
from 2026-04-13 to 2026-10-29
Expires in 162 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 85/100 Checked live page: https://www.lehrer-online.de/

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
  • x-content-type-options
  • referrer-policy
findings
  • CSP allows unsafe inline scripts/styles
  • CSP uses wildcard sources
  • missing Permissions Policy
Header values
referrer-policy
same-origin
x-frame-options
SAMEORIGIN
x-content-type-options
nosniff
content-security-policy
default-src 'self' data: 'unsafe-inline' 'unsafe-eval' blob: https://*.activehosted.com https://*.adspirit.de https://*.canva.com https://*.cloudfront.net https://*.edupool.cloud https://*.eduversum.de https://*.fwu.de https://*.google.com https://*.googleapis.com https://*.googletagmanager.com https://*.googleusercontent.com https://*.gstatic.com https://*.h5p.com https://*.h5p.org https://*.handwerk-macht-schule.de https://*.jwplayer.com https://*.lamapoll.de https://*.lamapoll.io https://*.lehrer-online.de https://*.mastertool-online.com https://*.paypal.com https://*.paypalobjects.com https://*.stripe.com https://*.vidis.schule https://*.vimeo.com https://*.youtube-nocookie.com https://*.zdf.de https://fast.fonts.net https://fonts.googleapis.com https://fonts.gstatic.com https://h5p.org https://maileon-lpc.s3.eu-central-1.amazonaws.com https://news.lehrer-online.de https://plausible.io https://secure.gravatar.com w3.org/svg/2000 https://*.sentry-cdn.com; connect-src 'self' blob: ht
strict-transport-security
max-age=63072000; includeSubDomains; preload

Links to (12)

Linked from (12)

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