prairielearn.com

Observed Jul 22, 2026, 00:41 UTC (2d 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 byGoogle Workspace

Secured byGoogle Trust Services

Registered withAmazon Registrar, Inc.

Also usesGoogle Search ConsoleStripe

IPv6 · tranco_40k

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

INFRASTRUCTURE MAPwhat prairielearn.com actually stands on - every host below is a signed observation

prairielearn.com

A / AAAA

104.26.7.66172.67.72.194104.26.6.662606:4700:20::681a:742+2 more

Cloudflareserves the site

armfazh.ns.cloudflare.commeiling.ns.cloudflare.com

cloudflare.comanswers its DNS

aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comoktpzuuh347lef6xywtertiwoxmawhxakgwhvfhactewikhopxzq.mx-verification.google.com+2 more

Google Workspacereceives its email

TLS

prairielearn.com

Google Trust Servicesissued its certificate

DNS Records

A 3

104.26.7.66
172.67.72.194
104.26.6.66

AAAA 3

2606:4700:20::681a:742
2606:4700:20::681a:642
2606:4700:20::ac43:48c2

MX 6

1aspmx.l.google.com
10alt3.aspmx.l.google.com
10alt4.aspmx.l.google.com
15oktpzuuh347lef6xywtertiwoxmawhxakgwhvfhactewikhopxzq.mx-verification.google.com
5alt1.aspmx.l.google.com
5alt2.aspmx.l.google.com

TXT 6

MS=6A8ADBB032E2CD9CD93B187BE98CFA1C6F4744F9
apple-domain-verification=5dsmepwghtB9n3gK
google-site-verification=WPirh3_V7zkkxX23U6wNXhZjBbNPawrefzjxDED5VwM
stripe-verification=1eedf9f773dc8386ee6e28e6c51457c8ac45653080ed8e8960c03bbff410b132
v=spf1 include:_spf.google.com include:spf.zoho.com include:transmail.net include:spf.zohomail360.com ~all
v=DMARC1; p=none; rua=mailto:0adb4658fd5440b4ab1116e2f6704e51@dmarc-reports.cloudflare.net;

NS 2

armfazh.ns.cloudflare.com
meiling.ns.cloudflare.com

SOA 1

armfazh.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (3)

Common Name	Issuer	Expires
`prairielearn.com`	C=US, O=Google Trust Services, CN=WE1	Fri, 09 Oct 2026 14:20:44 +0000
`WE1`	C=US, O=Google Trust Services LLC, CN=GTS Root R4	Tue, 20 Feb 2029 14:00:00 +0000
`GTS Root R4`	C=BE, O=GlobalSign nv-sa, 2.5.4.11=Root CA, CN=GlobalSign Root CA	Fri, 28 Jan 2028 00:00:42 +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 prairielearn.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_34a7fbde020bcb22
Output Hash: 3096701cc0a430c84ef72511912db2e36a92688cdc442566e6f07878ae81253d
Signature: ed25519:64c061cce50dc05c48ae1c46ce3c682a6683451405f42f2a59e66613907483fe1d48d802b5d7e1ae74252b243f50021ff3e862d0734440f539297beed053b80f
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/prairielearn.com