indexo.dev

onlinejudge.org

.org crawl

First seen 2026-04-13 · Last seen 2026-05-06 · ok HTTP/1.1 200 303 ms crawled 2026-05-06

FI · 95.217.83.222 · AS24940 Hetzner Online GmbH

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
Online Judge - Home
Description
Online Judge
Language
en
Generator
Joomla! - Copyright (C) 2005 - 2007 Open Source Matters. All rights reserved.

Technology

Server
nginx
CMS
Joomla
Ads
  • Google AdSense
Third-party hosts loaded (7)
  • ojbooks.com×5
  • pagead2.googlesyndication.com×2
  • www.google.com×2
  • www.paypalobjects.com×2
  • ajax.googleapis.com×1
  • s3.amazonaws.com×1
  • www.udebug.com×1

Social

Registration

Registrar
OVH sas
Created
2008-12-17
Expires
2026-12-17 211 days left
Updated
2026-01-31
Name servers
  • dns11.ovh.net
  • ns11.ovh.net

DNS records live

NS
  • dns11.ovh.net
  • ns11.ovh.net
MX
  • 1 mx1.mail.ovh.net
  • 100 mx3.mail.ovh.net
  • 5 mx2.mail.ovh.net

Email authentication partial

SPF
v=spf1 a mx ip4:95.217.83.222 ?all
neutral (?all)
DMARC
not published
DKIM
  • mail: k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC498XvU1ByQQ4zxCGU2m3CIGljzn1NtNhvgylloyQSo2+LbPFjrTSIvvnkOSP4TFi8y6fr04e95g9KaBq47KeM3AHNQwr…
selectors probed

Certificate (current)

R13
from 2026-03-11 to 2026-06-09
Expires in 20 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://onlinejudge.org/

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

Links to (8)

Linked from (2)