penguin.co.uk
Penguin Books UK | Official Website
penguin.co.uk is registered with CSC Corporate Domains, Inc since September 10, 1994 (32.2 years). The registration expires on September 10, 2027. The site runs on Next.js, React, WordPress and 7 other technologies. Its email security grade is D. Its SSL certificate is issued by Let's Encrypt and is valid for 36 more days.
- Domain age
- 32.2 yrs
- Technologies
- 10
- Email security
- D
- SSL days left
- 36
Registration
| Registrar | CSC Corporate Domains, Inc |
|---|---|
| Registered | September 10, 1994 |
| Expires | September 10, 2027 |
| Updated | September 6, 2026 |
| Status | client transfer prohibited |
| Name servers | ns-1144.awsdns-15.org, ns-1853.awsdns-39.co.uk, ns-464.awsdns-58.com, ns-755.awsdns-30.net |
| DNSSEC | Not signed |
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 141.193.213.30 | 300 |
| A | 141.193.213.31 | 300 |
| MX | eu-smtp-inbound-1.mimecast.com 10 | 900 |
| MX | eu-smtp-inbound-2.mimecast.com 10 | 900 |
| NS | ns-1144.awsdns-15.org | 172800 |
| NS | ns-1853.awsdns-39.co.uk | 172800 |
| NS | ns-464.awsdns-58.com | 172800 |
| NS | ns-755.awsdns-30.net | 172800 |
| TXT | MS=ms13089908 | 3600 |
| TXT | R0A0N20129 | 3600 |
| TXT | _2jsmg3e4uio2zdzx5fxlj7ovvrovb2b | 3600 |
| TXT | facebook-domain-verification=jjz9ht0lm6cves7ayoki0rf14qodlr | 3600 |
| TXT | google-site-verification=lWxupnM-BErxJWWRSvPbEJdkUOa4NLceB-3ZKUCLNjM | 3600 |
| TXT | hj-ownership=WbEZ56d45Ab1 | 3600 |
| TXT | v=spf1 ip4:62.172.191.128/25 ip4:185.35.48.34/32 ip4:185.35.50.163/32 include:spf.messagelabs.com include:_netblocks.mimecast.com -all | 3600 |
Technology stack
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, YE1, Let's Encrypt |
| Expires | December 16, 2026 |
| Days remaining | 36 |
| Protocol | TLSv1.3 |
| Names | penguin.co.uk |
Email security
- badSPF needs about 12 DNS lookups but the limit is 10. Receivers return a permanent error, so SPF fails. Flatten or remove includes.
- warnNo DKIM key found at common selectors (google, selector1, selector2, default, k1, k2, s1, s2, ...). DKIM may still use a custom selector we cannot guess.
- 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 reject: mail that fails authentication is blocked.
- goodDMARC aggregate reports are sent to mailto:[email protected].
- good2 MX record(s) found. Mail is handled by Mimecast.
Homepage metadata
| Title | Penguin Books UK | Official Website |
|---|---|
| Description | Explore the world of Penguin Books. Lose yourself in a book, find your next read and hear from the authors you love. |
| Language | en |
| Canonical | https://www.penguin.co.uk |
| Structured data | WebPage, Organization, WebSite |
| Indexable | Yes |
| Word count | 753 |
About penguin.co.uk
Who is the registrar of penguin.co.uk?
penguin.co.uk is registered with CSC Corporate Domains, Inc.
When does penguin.co.uk expire?
The current registration of penguin.co.uk expires on September 10, 2027. It was first registered on September 10, 1994.
What technology does penguin.co.uk use?
We detected 10 technologies on penguin.co.uk, including Cloudflare, WordPress, WP Engine, Next.js, React, Node.js.
Does penguin.co.uk protect its email with SPF and DMARC?
penguin.co.uk scores 60/100 (grade D) for email security. SPF needs about 12 DNS lookups but the limit is 10. Receivers return a permanent error, so SPF fails. Flatten or remove includes. No DKIM key found at common selectors (google, selector1, selector2, default, k1, k2, s1, s2, ...). DKIM may still use a custom selector we cannot guess.
What are the name servers of penguin.co.uk?
penguin.co.uk uses ns-1144.awsdns-15.org, ns-1853.awsdns-39.co.uk, ns-464.awsdns-58.com, ns-755.awsdns-30.net.