indexo.dev

rubykoans.com

.com crawl

First seen 2026-04-23 · Last seen 2026-05-17 · ok HTTP/1.1 200 17052 ms crawled 2026-05-17

US · 185.199.109.153 · AS54113 Fastly, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
Learn Ruby with the Edgecase Ruby Koans
Description
Learn Ruby with the Edgecase Ruby Koans
Language
en-US

Technology

CDN
Fastly
Server
GitHub.com
Fonts
  • Adobe Fonts

Third-party hosts loaded (2)

  • ajax.googleapis.com×1
  • use.typekit.net×1

Social

Registration

Registrar
1API GmbH
Created
2010-03-02
Expires
2027-03-02 287 days left
Updated
2026-05-12
Name servers
  • ns1.dnsimple-edge.com
  • ns2.dnsimple-edge.net
  • ns3.dnsimple-edge.io
  • ns4.dnsimple-edge.org

DNS records live

NS
  • ns1.dnsimple-edge.com
  • ns2.dnsimple-edge.net
  • ns3.dnsimple-edge.io
  • ns4.dnsimple-edge.org
TXT
  • ALIAS for www.rubykoans.com

Email authentication no MX

SPF
not published
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-04-25 to 2026-07-24
Expires in 66 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.rubykoans.com/

findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Links to (15)

Linked from (2)