Security Analysis Results

hlcu.substack.com

Comprehensive domain security and infrastructure analysis

Live Website Preview

website screenshot of https://hlcu.substack.com/

No Security Risks Detected

This domain appears to be safe and secure

100%
Score

Disclaimer: This assessment is based on automated analysis of publicly available information. Results are for informational purposes only. For critical applications, consult security professionals.

Scan Information

Last checked:December 25, 2025 01:37:03
Scan Complete

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Page Information

Target URL
https://hlcu.substack.com/
Page Title
HLCU Presents The Hidden Curriculum | Substack
hlcu.substack.com faviconSite Favicon
Status
Active

Host Information

Domain
hlcu.substack.com
Server
cloudflare
Country
United States
IP Address
172.64.150.56
ASN Information
13335
CLOUDFLARENET

Technologies

Substack logo
Substack
Blogs
Node.js logo
Node.js
Programming languages
Express logo
Express
Web frameworks
HSTS logo
HSTS
Security
Datadog logo
Datadog
RUM
Cloudflare Browser Insights logo
Cloudflare Browser Insights
Analytics
+2 more technologies detected

SSL Certificate

HTTPS Enabled
Secure
Certificate Issuer
N/A
Valid From
2025-12-24 01:37:09
Valid Until
2026-12-25 01:37:09
Subject Name
hlcu.substack.com

Performance Statistics

136
Total Requests
7
Domains
7
IP Addresses
718.55 KB
Transfer Size
Content Size1.39 MB

HTTP Headers

CF-Cache-Status
HIT
CF-Ray
9b349c917aa5d801-SEA
Cache-Control
no-cache
Connection
keep-alive
Content-Encoding
gzip
Content-Type
text/html; charset=utf-8
Date
Thu, 25 Dec 2025 01:37:09 GMT
ETag
W/"1bd9c-g8PNQU6U6HjkOK20eCqSaTr6B/w"
Link
<https://substackcdn.com>; rel=preconnect
Server
cloudflare
Strict-Transport-Security
max-age=31536000
Transfer-Encoding
chunked
Vary
Accept-Encoding
alt-svc
h3=":443"; ma=86400
content-security-policy
frame-ancestors 'self' https://*.substack.com https://substack.com
x-cluster
substack
x-deploy
66ab330854
x-powered-by
Express
x-served-by
Substack
x-service
web
x-sub
hlcu
21 headers detected

Technology Stack Analysis

Substack

Substack

Blogs

Substack is an American online platform that provides publishing, payment, analytics, and design infrastructure to support subscription newsletters.

Node.js

Node.js

Programming languages

Node.js is an open-source, cross-platform, JavaScript runtime environment that executes JavaScript code outside a web browser.

Express

Express

Web frameworksWeb servers

Express is a web application framework for Node.js, released as free and open-source software under the MIT License. It is designed for building web applications and APIs.

HSTS

HSTS

Security

HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.

Datadog

Datadog

RUMAnalytics

Datadog is a SaaS-based monitoring and analytics platform for large-scale applications and infrastructure.

Cloudflare Browser Insights

Cloudflare Browser Insights

AnalyticsRUM

Cloudflare Browser Insights is a tool that measures the performance of websites from the perspective of users.

Cloudflare

Cloudflare

CDN

Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.

HTTP/3

HTTP/3

Miscellaneous

HTTP/3 is the third major version of the Hypertext Transfer Protocol used to exchange information on the World Wide Web.

Website Cookies 4

ab_testing_id

.substack.com

HttpOnly Secure Lax
Value
%22cdc5cfdc-f2d6-4413-80ce-0ff62be9bff2%22
Expires:12/25/2026

_dd_s

hlcu.substack.com

Strict
Value
rum=0&expire=1766627530185
Expires:12/25/2025

__cf_bm

.substack.com

HttpOnly Secure None
Value
cErP9EFZ79p2TddQCm1kEcWIVMAHv95CfhtMCFIgkcM-1766626629-1.0.1.1-KQLZh8m.2tHxjJBEVpcB8qw4cVwe6p9QLySEa0FXcelfOcJUkke5.q1Yg6Q2fCR.Z6IRTNtEYz0pgaugHaBmkaBEhL1AuffvTosWH.W2kYw
Expires:12/25/2025

ab_experiment_sampled

.substack.com

HttpOnly Secure Lax
Value
%22false%22
Expires:12/25/2026

External Links 4

Terms of Use

substack.com

Analyze
Target URL
https://substack.com/tos

Information Collection Notice

substack.com

Analyze
Target URL
https://substack.com/ccpa#personal-data-collected

Privacy Policy

substack.com

Analyze
Target URL
https://substack.com/privacy

turn on JavaScript

enable-javascript.com

Analyze
Target URL
https://enable-javascript.com/

Requested Domains 7

cloudflareinsights.com

Unknown Type
No category information available

fonts.gstatic.com

Unknown Type
No category information available

hlcu.substack.com

Subdomain
No category information available

js.sentry-cdn.com

Unknown Type
No category information available

static.cloudflareinsights.com

Unknown Type
No category information available

substackcdn.com

Unknown Type
No category information available

www.datadoghq-browser-agent.com

Unknown Type
No category information available
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