indexo.dev

vnoi.info

.info crawl

First seen 2026-05-12 · Last seen 2026-05-18 · ok HTTP/1.1 200 2750 ms crawled 2026-05-18

US · 172.67.137.217 · AS13335 Cloudflare, Inc.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
Home - VNOJ: VNOI Online Judge
Description
VNOJ - Online Judge chính thức của VNOI.
Language
en
Canonical
https://oj.vnoi.info/
Feeds

Open Graph

url
https://oj.vnoi.info/
site name
VNOJ: VNOI Online Judge
description
VNOJ - Online Judge chính thức của VNOI.

Technology

CDN
Cloudflare
CMS
Gatsby
Analytics
  • Cloudflare Insights
  • Google Tag Manager

Third-party hosts loaded (4)

  • cse.google.com×1
  • img.shields.io×1
  • static.cloudflareinsights.com×1
  • www.googletagmanager.com×1

Social

Registration

Registrar
Wild West Domains, LLC
Created
2008-02-26
Expires
2030-02-26 1377 days left
Updated
2025-01-02
Name servers
  • ulla.ns.cloudflare.com
  • tosana.ns.cloudflare.com

DNS records live

NS
  • tosana.ns.cloudflare.com
  • ulla.ns.cloudflare.com
MX
Show 6 MX records
  • 10 alt3.aspmx.l.google.com
  • 10 alt4.aspmx.l.google.com
  • 20 mx20.mailspamprotection.com
  • 30 mx30.mailspamprotection.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com
Verified for
  • Google

Email authentication weak

SPF
v=spf1 +a +mx +a:ns1.am22.siteground.biz include:_spf.mailspamprotection.com ~all
softfail (~all)
DMARC
not published
DKIM
  • s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnv1MugIruWaT9ZKjuFdYvwWPJW9cwp4bkuFwJOKKw3MzDjtSVf7Kb3D0bsf3RAUCOG2H3lTwKcoAWZxDSX…
  • s2: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwK0JcFtSWc9fkqRwP1hl3MrKWDJH6BEEPSVNcRfC2OhksEOH1MvovijERgai3kQJ7KBVGW4Ze2CWw7Ca0m…
selectors probed

Certificate (current)

WE1
from 2026-05-11 to 2026-08-09
Expires in 80 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 40/100 Checked live page: https://oj.vnoi.info

present
  • x-frame-options
findings
  • missing HSTS
  • missing Content Security Policy
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
DENY

Links to (4)

Linked from (1)