indexo.dev

systemsliteracy.org

.org crawl

First seen 2026-04-18 · Last seen 2026-05-19 · ok HTTP/1.1 200 3532 ms crawled 2026-05-12

US · 75.98.174.239 · AS55293 A2 Hosting, Inc.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
Systems Literacy
Language
en-US
Generator
WordPress 6.9.4
Canonical
https://systemsliteracy.org/
Feeds

Technology

Server
LiteSpeed
CMS
WordPress
Fonts
  • Google Fonts

Third-party hosts loaded (2)

  • fonts.gstatic.com×1
  • gmpg.org×1

Registration

Registrar
eNom, LLC
Created
2019-08-20
Expires
2026-08-20 92 days left
Updated
2025-08-12
Name servers
  • ns1.a2hosting.com
  • ns2.a2hosting.com
  • ns3.a2hosting.com
  • ns4.a2hosting.com

DNS records live

NS
  • ns1.a2hosting.com
  • ns2.a2hosting.com
  • ns3.a2hosting.com
  • ns4.a2hosting.com
MX
  • 0 mail.systemsliteracy.org

Email authentication weak

SPF
v=spf1 +a +mx +ip4:66.198.240.18 include:spf.a2hosting.com +ip4:75.98.174.239 +ip4:66.198.240.6 ~all
softfail (~all)
DMARC
not published
DKIM
  • default: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAruCSY4Lu2bNIKqf/5LjeMJubVBWttl2SPz93dhpOfLU1QperTMadu0r8AUZ9dAkckMQhcST7rqsWOE…
selectors probed

Certificate (current)

R12
from 2026-05-06 to 2026-08-04
Expires in 76 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 70/100 Checked live page: https://systemsliteracy.org/

present
  • strict-transport-security
  • x-frame-options
  • x-content-type-options
findings
  • missing Content Security Policy
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
SAMEORIGIN
x-content-type-options
nosniff
strict-transport-security
max-age=63072000; includeSubDomains

Links to (2)

Linked from (3)