spdx.org

Observed Jul 24, 2026, 01:13 UTC (7h ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation — watch it for 5-minute checks.

Verify this receipt yourself + Watch this domain

Up right now

Email byMailgun

Secured byAmazon

IPv6 · tranco_100k

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat spdx.org actually stands on - every host below is a signed observation

spdx.org

A / AAAA

54.192.100.2554.192.100.5154.192.100.9054.192.100.104+8 more

2600serves the site

ns1.dnsimple-edge.comns2.dnsimple-edge.netns3.dnsimple-edge.ions4.dnsimple-edge.org

dnsimple-edge.com + dnsimple-edge.net + moreanswers its DNS

mx1.forwardemail.netmx2.forwardemail.net

Mailgunreceives its email

TLS

spdx.org

Amazonissued its certificate

DNS Records

A 4

54.192.100.25
54.192.100.51
54.192.100.90
54.192.100.104

AAAA 8

2600:9000:286d:2e00:18:2003:bfc0:93a1
2600:9000:286d:3200:18:2003:bfc0:93a1
2600:9000:286d:5200:18:2003:bfc0:93a1
2600:9000:286d:8800:18:2003:bfc0:93a1
2600:9000:286d:d200:18:2003:bfc0:93a1
2600:9000:286d:dc00:18:2003:bfc0:93a1
2600:9000:286d:ec00:18:2003:bfc0:93a1
2600:9000:286d:f400:18:2003:bfc0:93a1

MX 2

10mx1.forwardemail.net
10mx2.forwardemail.net

TXT 2

v=spf1 include:forwardemail.net a mx ip4:140.211.169.12 include:mailgun.org ~all
forward-email-site-verification=6MYgGWeEyJ

NS 4

ns1.dnsimple-edge.com
ns2.dnsimple-edge.net
ns3.dnsimple-edge.io
ns4.dnsimple-edge.org

SOA 1

ns1.dnsimple-edge.com admin.dnsimple.com

TLS Certificates (3)

Common Name	Issuer	Expires
`spdx.org`	C=US, O=Amazon, CN=Amazon RSA 2048 M01	Mon, 12 Oct 2026 23:59:59 +0000
`Amazon RSA 2048 M01`	C=US, O=Amazon, CN=Amazon Root CA 1	Fri, 23 Aug 2030 22:21:28 +0000
`Amazon Root CA 1`	C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Services Root Certificate Authority - G2	Thu, 31 Dec 2037 01:00:00 +0000

Subdomains (0)

None observed.

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 receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for spdx.org. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/spdx.org">
  <img src="https://domaindrift.io/badge/spdx.org.svg"
       width="300" height="64" alt="DomainDrift signed observations for spdx.org">
</a>

Ed25519 Receipt

Receipt ID: rcpt_a7afc191236f156b
Output Hash: bd8e7bd381046dc1ca5f49078f79fa38098ab8d55aaf891ecdb54f66f2de4904
Signature: ed25519:f2c38cf00a9f46274aa01abd170e495f812409ac3b132b580400e966b7cf3803f3e4e6d90b6767c621346cc81e8111c038b635680fb9db001b6b3f29be35a604
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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Permalink: https://domaindrift.io/t/spdx.org