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Gridlode
Rank #1,634Updated November 10, 2026

fsf.org

Front Page — Free Software Foundation — working together for free software

fsf.org is registered with Gandi SAS since February 1, 1991 (35.8 years). The registration expires on February 2, 2027. The site runs on Matomo, Nginx. Its email security grade is C. Its SSL certificate is issued by Let's Encrypt and is valid for 54 more days.

Domain age
35.8 yrs
Technologies
2
Email security
C
SSL days left
54

Registration

RegistrarGandi SAS
IANA ID81
RegisteredFebruary 1, 1991
ExpiresFebruary 2, 2027
UpdatedAugust 12, 2026
Statusclient transfer prohibited
Name serversns1.gnu.org, ns2.gnu.org, ns4.gnu.org
DNSSECNot signed

DNS records

TypeValueTTL
A209.51.188.174180
MXmail.fsf.org 10180
NSns1.gnu.org180
NSns2.gnu.org180
NSns4.gnu.org180
CAAissue 0 letsencrypt.org180
CAAissuewild 0 letsencrypt.org180
TXTlibera-asq123s180
TXTv=spf1 redirect=gnu.org180
AAAA2001:470:142:4::a180

Technology stack

Analytics
Web server

SSL certificate

ValidValid
IssuerUS, YR2, Let's Encrypt
ExpiresJanuary 3, 2027
Days remaining54
ProtocolTLSv1.2
Names*.fsf.org, *.member.fsf.org, *.members.fsf.org, *.office.fsf.org, fsf.org

Email security

CScore 65/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
  • warnDMARC policy is none (monitoring only). Spoofed mail is still delivered.
  • 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 aggregate reports are sent to mailto:[email protected].
  • goodDKIM keys found (selector: selector1).
  • good1 MX record(s) found.

Homepage metadata

TitleFront Page — Free Software Foundation — working together for free software
Languageen
Structured dataOrganization, NGO, WebSite, WebPage, ItemList, Project, DataCatalog, EventSeries
IndexableYes
Word count991

About fsf.org

Who is the registrar of fsf.org?

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

When does fsf.org expire?

The current registration of fsf.org expires on February 2, 2027. It was first registered on February 1, 1991.

What technology does fsf.org use?

We detected 2 technologies on fsf.org, including Matomo, Nginx.

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

fsf.org scores 65/100 (grade C) for email security. DMARC policy is none (monitoring only). Spoofed mail is still delivered. No MTA-STS: mail sent to you can be downgraded to an unencrypted connection.

What are the name servers of fsf.org?

fsf.org uses ns1.gnu.org, ns2.gnu.org, ns4.gnu.org.