greenhill.org

HTML metadata

Title: Home
Description: Greenhill School is a PK-12, co-ed, independent, nonsectarian school in Addison, Texas. We embrace complexity, act with integrity, celebrate the power of difference, and excel in new ways. Together, we are ready for the world ahead.
Language: en
Canonical: https://www.greenhill.org

Open Graph

title: Greenhill School | PK-12 Co-Ed Independent School in Dallas, TX
description: Greenhill School is a PK-12, co-ed, independent, nonsectarian school in Addison, Texas. We embrace complexity, act with integrity, celebrate the power of difference, and excel in new ways. Together, we are ready for the world ahead.

Technology

Server: Microsoft-IIS
CMS: Joomla

Analytics

Google Tag Manager

Third-party hosts loaded (3)

greenhill.static.amais.com×107
greenhill-cdn.website.amais.com×11
www.googletagmanager.com×1

Social

Contact

Phone

(972) 628-5400

Registration

Registrar

Network Solutions, LLC

Created

1995-08-22

Expires

2032-08-21 2286 days left

Updated

2022-08-27

Name servers

ns51.worldnic.com
ns52.worldnic.com

DNS records live

NS

ns51.worldnic.com
ns52.worldnic.com

MX

0 greenhill-org.mail.protection.outlook.com

TXT

Show 19 TXT records

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Email authentication partial

SPF

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permissive (+all) — anyone can send as this domain

DMARC

v=DMARC1;p=quarantine;pct=100

policy: quarantine

DKIM

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selectors probed

Certificate (current)

GeoTrust TLS RSA CA G1

from 2026-02-18 to 2026-08-19

Expires in 92 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 75/100 Checked live page: https://www.greenhill.org/

present

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

findings

CSP uses wildcard sources
missing frame protection
missing Referrer Policy
missing Permissions Policy

Header values

x-content-type-options: nosniff
content-security-policy: frame-ancestors 'self' *.ubiqeducation.com *.amais.com www.greenhill.org greenhill.org www.greenhillinnovation.com greenhillinnovation.com greenhill.website.amais.com;Upgrade-Insecure-Requests;
strict-transport-security: max-age=32832000

Links to (6)

Linked from (2)

posmc.com×2
ubiqeducation.com×2