edstem.org

Observed Jul 24, 2026, 21:51 UTC (8d 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

Runs onCloudflare

Email byMicrosoft 365

Secured byLet's Encrypt

Also usesGoogle Search Console

IPv6 · tranco

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

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

edstem.org

A / AAAA

104.18.2.201104.18.3.2012606:4700::6812:2c92606:4700::6812:3c9

Cloudflareserves the site

ray.ns.cloudflare.comelle.ns.cloudflare.com

cloudflare.comanswers its DNS

edstem-org.mail.protection.outlook.com

Microsoft 365receives its email

TLS

edstem.org

Let's Encryptissued its certificate

DNS Records

A 2

104.18.2.201
104.18.3.201

AAAA 2

2606:4700::6812:2c9
2606:4700::6812:3c9

MX 1

10edstem-org.mail.protection.outlook.com

TXT 6

MS=ms23982352
apple-domain-verification=BkJTiVBLVYcz2sVY
anthropic-domain-verification-chfcck=dbab97jYRd2TaqcixLFE8yWwM
google-site-verification=Gjzpt1cv8phfBej7mHim2QR-LusfRx_1eQPWjdjzABw
v=spf1 ip4:69.169.239.74 ip4:54.240.84.232 ip4:54.240.84.231 include:amazonses.com include:spf.protection.outlook.com -all
v=DMARC1;p=reject;pct=0;rua=mailto:dmarc@edstem.org

NS 2

ray.ns.cloudflare.com
elle.ns.cloudflare.com

SOA 1

elle.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (4)

Common Name	Issuer	Expires
`edstem.org`	C=US, O=Let's Encrypt, CN=YE1	Thu, 01 Oct 2026 02:58:36 +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 (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 edstem.org. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_cf19b059b89af3b6
Output Hash: f59c54157545654a11729f1eb8828d927e5946ed2d1d2152396fe5419d203eb8
Signature: ed25519:d20e93464995e3e26380faf2572882aa5ae3cc274fda8bb084013ecf119c30a0f97ca8378ff2b7371b7336a76e14fbeb70c36386d9664eb0af5ebfbffe472d0f
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

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