indexo.dev

prairielearn.com

.com crawl

First seen 2026-05-08 · Last seen 2026-05-15 · ok HTTP/1.1 200 2790 ms crawled 2026-05-15

US · 104.26.6.66 · AS13335 Cloudflare, Inc.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title
PrairieLearn
Description
PrairieLearn is an online assessment and learning system that empowers instructors to create robust educational resources for students.

Open Graph

title
PrairieLearn
site name
PrairieLearn
description
PrairieLearn is an online assessment and learning system that empowers instructors to create robust educational resources for students.

Technology

CDN
Cloudflare
CMS
Next.js

Third-party hosts loaded (1)

  • cdn.jsdelivr.net×1

Social

Registration

Registrar
Amazon Registrar, Inc.
Created
2013-05-31
Expires
2027-05-31 376 days left
Updated
2026-04-26
Name servers
  • armfazh.ns.cloudflare.com
  • meiling.ns.cloudflare.com

DNS records live

NS
  • armfazh.ns.cloudflare.com
  • meiling.ns.cloudflare.com
MX
Show 6 MX records
  • 1 aspmx.l.google.com
  • 10 alt3.aspmx.l.google.com
  • 10 alt4.aspmx.l.google.com
  • 15 oktpzuuh347lef6xywtertiwoxmawhxakgwhvfhactewikhopxzq.mx-verification.google.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com
TXT
Show 4 TXT records
  • stripe-verification=1eedf9f773dc8386ee6e28e6c51457c8ac45653080ed8e8960c03bbff410b132
  • MS=6A8ADBB032E2CD9CD93B187BE98CFA1C6F4744F9
  • apple-domain-verification=5dsmepwghtB9n3gK
  • google-site-verification=WPirh3_V7zkkxX23U6wNXhZjBbNPawrefzjxDED5VwM

Email authentication partial

SPF
v=spf1 include:_spf.google.com include:spf.zoho.com include:transmail.net include:spf.zohomail360.com ~all
softfail (~all)
DMARC
v=DMARC1; p=none; rua=mailto:0adb4658fd5440b4ab1116e2f6704e51@dmarc-reports.cloudflare.net;
policy: none (monitoring only)
DKIM
  • google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAhieGOiut8WM0Izjlm0pecWDrPHR0/iQY+hby8PlWNGPU+G/9HQU5LQsHDP+yyLEciRHBM/XvrxGveO…
selectors probed

Certificate (current)

WE1
from 2026-05-13 to 2026-08-11
Expires in 83 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://www.prairielearn.com/

present
  • strict-transport-security
findings
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
strict-transport-security
max-age=63072000

Links to (2)

Linked from (1)

See all sites whose homepage links to prairielearn.com →