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Rank #7,306Updated November 10, 2026

nixos.org

Nix & NixOS | Reproducible builds and deployments

nixos.org is registered with Gandi SAS since March 18, 2007 (19.6 years). The registration expires on March 18, 2027. The site runs on Astro, Netlify, HSTS. Its email security grade is B. Its SSL certificate is issued by Let's Encrypt and is valid for 81 more days.

Domain age
19.6 yrs
Technologies
3
Email security
B
SSL days left
81

Registration

RegistrarGandi SAS
IANA ID81
RegisteredMarch 18, 2007
ExpiresMarch 18, 2027
UpdatedAugust 12, 2026
Statusclient transfer prohibited
Name serversns-161-c.gandi.net, ns-177-a.gandi.net, ns-61-b.gandi.net
DNSSECNot signed

DNS records

TypeValueTTL
A75.2.60.51913
A99.83.231.611913
MXumbriel.nixos.org 103600
NSns-177-a.gandi.net10800
NSns-61-b.gandi.net10800
NSns-161-c.gandi.net10800
CAAissue 128 letsencrypt.org3600
CAAiodef 128 mailto:[email protected]3600
CAAissuewild 128 ;3600
TXTapple-domain-verification=OvacO4lGB9A6dBFg3600
TXTv=spf1 a:umbriel.nixos.org include:_spf.google.com -all3600
TXTgoogle-site-verification=Qp2ww11Hvufxn0pGsHvbU6KgLU_Lpe_LF9vq_i3J8NI3600
TXTbrevo-code:f580a125e215ecb440363a15cdf47a173600

Technology stack

Hosting
JavaScript framework
Security

SSL certificate

ValidValid
IssuerUS, YE2, Let's Encrypt
ExpiresJanuary 30, 2027
Days remaining81
ProtocolTLSv1.3
Namesnixos.org, www.nixos.org

Email security

BScore 85/100 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 reject: mail that fails authentication is blocked.
  • goodDMARC aggregate reports are sent to mailto:[email protected].
  • goodDKIM keys found (selector: google, mail).
  • good1 MX record(s) found.

Homepage metadata

TitleNix & NixOS | Reproducible builds and deployments
DescriptionNix is a tool that takes a unique approach to package management and system configuration. Learn how to make reproducible, declarative and reliable systems.
Languageen
Canonicalhttps://nixos.org/
IndexableYes
Word count319

About nixos.org

Who is the registrar of nixos.org?

nixos.org is registered with Gandi SAS (IANA ID 81).

When does nixos.org expire?

The current registration of nixos.org expires on March 18, 2027. It was first registered on March 18, 2007.

What technology does nixos.org use?

We detected 3 technologies on nixos.org, including Netlify, Astro, HSTS.

Does nixos.org protect its email with SPF and DMARC?

nixos.org scores 85/100 (grade B) 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 nixos.org?

nixos.org uses ns-177-a.gandi.net, ns-61-b.gandi.net, ns-161-c.gandi.net.