pragprog.com
Pragmatic Bookshelf: By Developers, For Developers
pragprog.com is registered with 1API GmbH since January 19, 1999 (27.8 years). The registration expires on January 19, 2027. The site runs on cdnjs, jsDelivr, Cookie Consent and 5 other technologies. Its email security grade is C. Its SSL certificate is issued by Let's Encrypt and is valid for 30 more days.
- Domain age
- 27.8 yrs
- Technologies
- 8
- Email security
- C
- SSL days left
- 30
Registration
| Registrar | 1API GmbH |
|---|---|
| IANA ID | 1387 |
| Registered | January 19, 1999 |
| Expires | January 19, 2027 |
| Updated | January 14, 2026 |
| Status | client transfer prohibited |
| Name servers | ns-1266.awsdns-30.org, ns-1538.awsdns-00.co.uk, ns-275.awsdns-34.com, ns-960.awsdns-56.net |
| DNSSEC | Not signed |
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 64.23.242.214 | 300 |
| MX | mx1.emailsrvr.com 10 | 86400 |
| MX | mx2.emailsrvr.com 20 | 86400 |
| NS | ns-1266.awsdns-30.org | 172800 |
| NS | ns-1538.awsdns-00.co.uk | 172800 |
| NS | ns-275.awsdns-34.com | 172800 |
| NS | ns-960.awsdns-56.net | 172800 |
| CAA | issue 0 letsencrypt.org | 3600 |
| TXT | google-site-verification=aaQupeaj2Y1RYRFl6M599QBYIuP6pCOihDLS9t0cLYY | 300 |
| TXT | v=DMARC1; p=quarantine; rua=mailto:[email protected] | 300 |
| TXT | v=spf1 include:spf0.pragprog.com ~all | 300 |
Technology stack
Analytics and advertising IDs
google_tag_manager:GTM-5B3LMK9HSSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, YE1, Let's Encrypt |
| Expires | December 10, 2026 |
| Days remaining | 30 |
| Protocol | TLSv1.3 |
| Names | *.pragmatic.org, *.pragmaticprogrammer.com, *.pragprog.com, pragmaticprogrammer.com, pragprog.com |
Email security
- 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: google, mail).
- good2 MX record(s) found. Mail is handled by Rackspace.
Homepage metadata
| Title | Pragmatic Bookshelf: By Developers, For Developers |
|---|---|
| Description | We improve the lives of professional developers. We create timely, practical books on classic and cutting-edge topics to help you learn and practice your craft, and accelerate your career. Come learn with us. |
| Language | en |
| Indexable | Yes |
| Word count | 441 |
About pragprog.com
Who is the registrar of pragprog.com?
pragprog.com is registered with 1API GmbH (IANA ID 1387).
When does pragprog.com expire?
The current registration of pragprog.com expires on January 19, 2027. It was first registered on January 19, 1999.
What technology does pragprog.com use?
We detected 8 technologies on pragprog.com, including cdnjs, jsDelivr, Cookie Consent, Font Awesome, Google Fonts, jQuery.
Does pragprog.com protect its email with SPF and DMARC?
pragprog.com 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 pragprog.com?
pragprog.com uses ns-1266.awsdns-30.org, ns-1538.awsdns-00.co.uk, ns-275.awsdns-34.com, ns-960.awsdns-56.net.