gwern.net
Essays · Gwern.net
gwern.net is registered with PDR Ltd. d/b/a PublicDomainRegistry.com since October 2, 2010 (16.1 years). The registration expires on October 2, 2027. The site runs on Universal Analytics, Cloudflare. Its email security grade is F. Its SSL certificate is issued by Google Trust Services and is valid for 59 more days.
- Domain age
- 16.1 yrs
- Technologies
- 2
- Email security
- F
- SSL days left
- 59
Registration
| Registrar | PDR Ltd. d/b/a PublicDomainRegistry.com |
|---|---|
| IANA ID | 303 |
| Registered | October 2, 2010 |
| Expires | October 2, 2027 |
| Updated | September 26, 2026 |
| Status | client transfer prohibited |
| Name servers | lady.ns.cloudflare.com, sid.ns.cloudflare.com |
| DNSSEC | Not signed |
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 172.67.71.248 | 300 |
| A | 104.26.11.177 | 300 |
| A | 104.26.10.177 | 300 |
| MX | mx-fwd-1.nearlyfreespeech.net 0 | 300 |
| NS | lady.ns.cloudflare.com | 86400 |
| NS | sid.ns.cloudflare.com | 86400 |
| TXT | v=spf1 -all | 300 |
| AAAA | 2606:4700:20::681a:bb1 | 58 |
| AAAA | 2606:4700:20::ac43:47f8 | 58 |
| AAAA | 2606:4700:20::681a:ab1 | 58 |
Technology stack
Analytics and advertising IDs
google_analytics:UA-18912926-1SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, WE1, Google Trust Services |
| Expires | January 9, 2027 |
| Days remaining | 59 |
| Protocol | TLSv1.3 |
| Names | gwern.net, *.gwern.net |
Email security
- badNo DMARC record. Receivers have no instructions for mail that fails SPF and DKIM, and you get no reports about who sends as your domain.
- 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.
- goodSPF record found.
- goodSPF ends with -all: servers you have not listed are rejected (hard fail).
- goodSPF says this domain sends no email, so DKIM signing is not needed.
- good1 MX record(s) found.
Homepage metadata
| Title | Essays · Gwern.net |
|---|---|
| Description | Personal website of Gwern Branwen (writer, self-experimenter, and programmer): topics: psychology, statistics, technology, deep learning, anime. This index page is a categorized list of Gwern.net pages. |
| Language | en-us |
| Canonical | https://gwern.net/index |
| Indexable | Yes |
| Word count | 1846 |
About gwern.net
Who is the registrar of gwern.net?
gwern.net is registered with PDR Ltd. d/b/a PublicDomainRegistry.com (IANA ID 303).
When does gwern.net expire?
The current registration of gwern.net expires on October 2, 2027. It was first registered on October 2, 2010.
What technology does gwern.net use?
We detected 2 technologies on gwern.net, including Universal Analytics, Cloudflare.
Does gwern.net protect its email with SPF and DMARC?
gwern.net scores 47/100 (grade F) for email security. No DMARC record. Receivers have no instructions for mail that fails SPF and DKIM, and you get no reports about who sends as your domain. No MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
What are the name servers of gwern.net?
gwern.net uses lady.ns.cloudflare.com, sid.ns.cloudflare.com.