Rank #5,511Updated November 10, 2026
duden.de
Duden | Sprache sagt alles.
The site runs on Astro, Drupal, Google Ad Manager and 4 other technologies. Its email security grade is C. Its SSL certificate is issued by Amazon and is valid for 170 more days.
- Domain age
- —
- Technologies
- 7
- Email security
- C
- SSL days left
- 170
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 51.102.229.102 | 48 |
| A | 63.189.253.194 | 48 |
| MX | duden-de.mail.protection.outlook.com 10 | 7200 |
| NS | ns-1017.awsdns-63.net | 172800 |
| NS | ns-1096.awsdns-09.org | 172800 |
| NS | ns-112.awsdns-14.com | 172800 |
| NS | ns-1670.awsdns-16.co.uk | 172800 |
| TXT | GfjwwYenC/INGomtGPrSx+6v0TcbO3K2DIbMN3g3Kmrw2sxRDk9Vz/jnP/lUno64s1RXmJPXiWMSwm3RXOxXyg== | 60 |
| TXT | MS=ms25499777 | 60 |
| TXT | adobe-idp-site-verification=075eefcd8c33f186361df81cd071b736d6ad72a67e45403e81a51e1abc127a35 | 60 |
| TXT | amazon-business-verification=981f0f3de87b31cf895155f8fd7fb9175201e5f6345397c6c74fb239f69573e9 | 60 |
| TXT | cursor-domain-verification-a6ps29=vx9SdV6E5TzmYStUNal9xDM5D | 60 |
| TXT | docker-verification=1164772e-c2ac-4444-a18d-8b97cc7ece60 | 60 |
| TXT | extensis-domain-verification=d39c624e-715d-4d88-be9a-63bf49dc2697 | 60 |
| TXT | google-site-verification=KR1Rer-cA0cElRKMGIy5sPx-RKaMKFFwH6AtJZvCEo8 | 60 |
| TXT | mindmanager-verification=b9efeea84fa602423d14f9bac7387c9ae2b0378134268885e3129f5cd7ccd2c0 | 60 |
| TXT | miro-verification=df094973366a264bb093ee50ef9bc221d85d515c | 60 |
| TXT | v=spf1 mx a ip4:87.230.83.100 ip4:5.35.254.138 ip4:80.237.251.224/27 ip4:87.106.189.99 ip4:85.17.187.195 ip4:95.211.74.199 ip4:62.204.93.131 ip4:5.148.147.128/27 ip4:87.252.58.128/26 ip4:194.39.189.0/24 ip4:35.156.120.155 include:spf.mtasv.net include:spf.protection.outlook.com include:_spf.rexx-suite.com ~all | 60 |
Technology stack
Advertising
Cache
CMS
JavaScript framework
JavaScript library
Programming language
Tag manager
Analytics and advertising IDs
google_tag_manager:GTM-M8R4BXMSSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, Amazon RSA 2048 M01, Amazon |
| Expires | April 29, 2027 |
| Days remaining | 170 |
| Protocol | TLSv1.2 |
| Names | duden.de, *.duden.de |
Email security
CScore 77/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
- warnNo MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
- warnNo TLS-RPT record, so you won't hear about failed encrypted deliveries.
- warnNo BIMI record (optional: shows your logo next to your emails in supporting inboxes).
- goodSPF record found.
- goodSPF ends with ~all: servers you have not listed are marked as suspicious (soft fail).
- goodDMARC policy is quarantine: failing mail goes to spam. Move to p=reject for full protection.
- goodDMARC aggregate reports are sent to mailto:[email protected].
- goodDKIM keys found (selector: selector2, s1, s2).
- good1 MX record(s) found. Mail is handled by Microsoft 365.
Homepage metadata
| Title | Duden | Sprache sagt alles. |
|---|---|
| Description | Duden ist die Marke der deutschen Sprache ➤ Wörterbücher, Sachbücher, Ratgeber, Lernhilfen und viele digitale Produkte (Software und Apps) ➤ Duden ist mehr als ein Wörterbuch! |
| Language | de |
| Canonical | https://www.duden.de |
| Indexable | Yes |
| Word count | 570 |
About duden.de
What technology does duden.de use?
We detected 7 technologies on duden.de, including Google Ad Manager, Varnish, Drupal, Astro, jQuery, PHP.
Does duden.de protect its email with SPF and DMARC?
duden.de scores 77/100 (grade C) for email security. No MTA-STS: mail sent to you can be downgraded to an unencrypted connection. No TLS-RPT record, so you won't hear about failed encrypted deliveries.
What are the name servers of duden.de?
duden.de uses ns-1017.awsdns-63.net, ns-1096.awsdns-09.org, ns-112.awsdns-14.com, ns-1670.awsdns-16.co.uk.