linuxfoundation.org
Observed Jul 18, 2026, 12:01 UTC (2d ago). Every field below was attested with an Ed25519 signature at scan time.
Up right now
Runs onCloudflare
Email byGoogle Workspace
Secured byLet's Encrypt
Registered with1API GmbH
Also usesFacebook/MetaGoogle Search ConsoleHubSpotZoomStripe
1 subdomain · open_source
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat linuxfoundation.org actually stands on - every host below is a signed observation
linuxfoundation.org
A / AAAA
3.131.150.69
Cloudflareserves the site
NS
ns1.dnsimple-edge.comns2.dnsimple-edge.netns3.dnsimple-edge.ions4.dnsimple-edge.org
dnsimple-edge.com + dnsimple-edge.net + moreanswers its DNS
MX
smtp.google.com
Google Workspacereceives its email
TLS
www.linuxfoundation.org
Let's Encryptissued its certificate
DNS Records
A 1
3.131.150.69
MX 1
1smtp.google.com
TXT 16
asv=c1fdffadb0fd615cad7c3830edd07ed4facebook-domain-verification=qszecvsg1sxiy6ula1zumzw4z247ragoogle-site-verification=7fAmztvM0wOJRENtNl_PJUeEd4eUJxORFZ_mntw_O7Agoogle-site-verification=a8A4fR7tzctgZOlQxocIsntJ1g8Z9cbs0n9Aa5nXNwYh1-domain-verification=RW2zqC5Bj38rfdBSmzPtCSS1TNKA3A9ECMCtd3PnLJ1FjkyFhubspot-developer-verification=MWI3OGJhN2ItZmEyNi00Y2YwLWFhY2ItNTk1MjY0ZGNjNDk4v=spf1 ip4:72.55.140.81 ip4:208.117.49.186 include:_spf.kernel.org include:_spf.google.com include:amazonses.com include:_spf.salesforce.com include:8112310.spf10.hubspotemail.net -all9484b892358a64444745dd08fa0ab81bD4A3BBDF34ZOOM_verify_p8ePICiOQgaSJHn-6yQBPg
NS 4
ns1.dnsimple-edge.comns2.dnsimple-edge.netns3.dnsimple-edge.ions4.dnsimple-edge.org
SOA 1
ns1.dnsimple-edge.com admin.dnsimple.com
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
www.linuxfoundation.org |
C=US, O=Let's Encrypt, CN=YE1 | Thu, 01 Oct 2026 18:36:34 +0000 |
YE1 |
C=US, O=ISRG, CN=Root YE | Sat, 02 Sep 2028 23:59:59 +0000 |
Root YE |
C=US, O=Internet Security Research Group, CN=ISRG Root X2 | Thu, 02 Sep 2032 23:59:59 +0000 |
ISRG Root X2 |
C=US, O=Internet Security Research Group, CN=ISRG Root X1 | Thu, 02 Sep 2032 23:59:59 +0000 |
Subdomains (1)
The proof
Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.
Verify this receiptEd25519 Receipt
- Receipt ID
36ee755b-e746-4e60-91cb-dd34fce85524- Output Hash
66201bcfc4c4a227d350b93b48f632a4f94b65daeaf4ecc0da30e5e1e8d44ed4- Signature
ed25519:483f872b4f7a5a097de0c2d46b2d2b4c75460099f0cd5f5c9ba5f4e3d988f8f5c99b067c0adbeb598b0a8e64b32df756bbaf426a4cd156c6f48e6904c2a82d07- Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8- Parent
(genesis)- Plane
- fast