concordiahanoi.org

.org crawl

First seen 2026-05-27 · Last seen 2026-05-30 · ok HTTP/1.1 200 710 ms crawled 2026-05-30

US · 104.17.67.73 · AS13335 Cloudflare, Inc.

Reputation 86/100 dmarc partial coverage weak subdomain policy

Classifying

HTML metadata

Title: Concordia Hanoi | Premier International School in Vietnam
Description: Welcome to Concordia International School Hanoi. Discover our vibrant Preschool-G12 community, rigorous American curriculum, athletics, arts, and path to top global universities.
Language: en-US
Canonical: https://www.concordiahanoi.org/

Open Graph

url: https://www.concordiahanoi.org/
title: Concordia Hanoi | Premier International School in Vietnam
description: Welcome to Concordia International School Hanoi. Discover our vibrant Preschool-G12 community, rigorous American curriculum, athletics, arts, and path to top global universities.

Technology

CDN: Cloudflare

Analytics

Cloudflare Insights
Google Tag Manager

Third-party hosts loaded (4)

www.googletagmanager.com×2
resources.finalsite.net×1
static.cloudflareinsights.com×1
translate.google.com×1

Social

Contact

Phone

84 (0) 24 3795 8878

DNS records live

NS

ns1.mediatemple.net
ns2.mediatemple.net

MX

1 aspmx.l.google.com
10 alt3.aspmx.l.google.com
10 alt4.aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com

Verified for

Adobe
Ahrefs
Apple
Google
Meta
Zoom

Email authentication partial

SPF

v=spf1 include:_spf.google.com ~all

softfail (~all)

DMARC

v=DMARC1; p= quarantine; rua=mailto:noreply-dmarc@concordiahanoi.org; ruf=mailto:noreply-dmarc@concordiahanoi.org; pct=5; sp=none

policy: quarantine · pct=5 · sp=none

DKIM

google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAjF+OujWu1257AJNMTNxzfyZsRElUWYP0utUuAqdND0eH9DPaaQvNo4rtnkBE5z7W4YUWQMaes+/Y36…

selectors probed

Certificate (current)

from 2026-05-07 to 2026-08-05

Expires in 65 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 95/100 Checked live page: https://www.concordiahanoi.org/

present

strict-transport-security
content-security-policy
x-frame-options
x-content-type-options
referrer-policy

findings

missing Permissions Policy

Header values

referrer-policy: strict-origin-when-cross-origin
x-frame-options: SAMEORIGIN
x-content-type-options: nosniff
content-security-policy: frame-ancestors 'self';
strict-transport-security: max-age=31536000

Links to (12)

Linked from (1)

amchamhanoi.com×1