Rank #9,278Updated November 10, 2026
penguin.de
Penguin: Alle Bücher, Hörbücher & eBooks aus über 40 Verlagen
The site runs on Friendly Captcha, HSTS, Nginx. Its email security grade is C. Its SSL certificate is issued by DigiCert Inc and is valid for 143 more days.
- Domain age
- —
- Technologies
- 3
- Email security
- C
- SSL days left
- 143
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 128.65.211.90 | 268 |
| MX | penguin-de.mail.protection.outlook.com 10 | 86400 |
| NS | ns2.arvato-systems.de | 3600 |
| NS | dns009.arvato-systems.de | 3600 |
| NS | dns017.arvato-systems.de | 3600 |
| NS | ns1.arvato-systems.de | 3600 |
| TXT | MS=ms95225869 | 3600 |
| TXT | google-site-verification=JDcQieCPDXKlmMFYexmAmRJupNzdDS7c38VLjXRnr74 | 3600 |
| TXT | google-site-verification=26h-p0cdgVz00EYZI6lzgPy9Mu0texuOuZZoqKltQbI | 3600 |
| TXT | facebook-domain-verification=ocfqhpgmw4cjlqenf87e50rqerjy6l | 3600 |
| TXT | pinterest-site-verification=cdcbe53dc5765872d95ae13c998bbb24 | 3600 |
| TXT | v=spf1 include:spf.protection.outlook.com include:_spf.senders.scnem.com include:spf.lamapoll.de include:spf.servicemail24.de -all | 3600 |
Technology stack
Security
Web server
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, RapidSSL TLS RSA CA G1, DigiCert Inc |
| Expires | April 3, 2027 |
| Days remaining | 143 |
| Protocol | TLSv1.3 |
| Names | *.penguin.de, penguin.de |
Email security
CScore 79/100 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 rejected (hard 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: selector1).
- good1 MX record(s) found. Mail is handled by Microsoft 365.
Homepage metadata
| Title | Penguin: Alle Bücher, Hörbücher & eBooks aus über 40 Verlagen |
|---|---|
| Description | Entdecke die Welt der Bücher mit Penguin. Mit über 40 Verlagen unter einem Dach informieren wir dich über Neuerscheinungen, Autor*innen & Events. |
| Language | de-DE |
| Canonical | https://www.penguin.de |
| Structured data | Organization, WebSite, SiteNavigationElement |
| Indexable | Yes |
| Word count | 1306 |
About penguin.de
What technology does penguin.de use?
We detected 3 technologies on penguin.de, including Friendly Captcha, HSTS, Nginx.
Does penguin.de protect its email with SPF and DMARC?
penguin.de scores 79/100 (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 penguin.de?
penguin.de uses ns2.arvato-systems.de, dns009.arvato-systems.de, dns017.arvato-systems.de, ns1.arvato-systems.de.