URL Inspection: https://cs124.org

Open Cached · just now

UP

HTTP Status

200

Ping

N/A

Technologies

6

Technologies Detected

Infrastructure & Network (2)

DNS Provider	Cloudflare DNS https://www.cloudflare.com
Evidence: • DNS Record NS: celeste.ns.cloudflare.com • DNS Record NS: sergi.ns.cloudflare.com

Web Server	Nginx https://nginx.org
Evidence: • Header Server: nginx

Development (1)

JavaScript Library	Webpack https://webpack.js.org
Evidence: • HTML <script>: https://cs124.org/_next/static/chunks/webpack-40c68a322430ce65.js

SSL & Certificates (1)

Certificate Authority	Let's Encrypt https://letsencrypt.org
Evidence: • SSL Certificate Issuer: C=US, O=Let's Encrypt, CN=E7

Other (2)

Framework	Next.js
Evidence: • Header X-Powered-By: Next.js • HTML <script>: https://cs124.org/_next/static/chunks/polyfills-42372ed130431b0a.js • HTML <script>: https://cs124.org/_next/static/chunks/webpack-40c68a322430ce65.js • HTML <script>: https://cs124.org/_next/static/chunks/framework-211cb7bd40046df5.js • HTML <script>: https://cs124.org/_next/static/chunks/main-5e853be0e15d47ce.js ... and 3 more

Registrar	Cloudflare https://www.cloudflare.com
Evidence: • WHOIS Registrar: Cloudflare, Inc.

Metadata & SEO

Title

CS 124: An Introduction to Computer Science

Language

en

Viewport

width=device-width, initial-scale=1, shrink-to-fit=no

Domain Owner Information

View Full WHOIS

Registrar

Cloudflare, Inc.

Created

August 18, 2021

4 years 76 days old

Expires

August 18, 2026

9 months 19 days left

SSL/TLS Certificate

View Full SSL Report

Issued By

C=US, O=Let's Encrypt, CN=E7

Security Score

75 /100

Social Media Cards

OpenGraph (5 properties)

Type

website

Description

An introduction to computer science

Title

CS 124: An Introduction to Computer Science

Image

https://www.cs124.org/images/logo-120x120.png

Url

https://www.cs124.org/

Network & Hosting

View DNS Records

130.126.151.51 • AS38

UIUC

Reverse DNS: cs124-frontend-01.cs.illinois.edu

External Dependencies

google.com (1 resources)

Iframes (1)

• https://calendar.google.com/calendar/embed?height=400&wkst=2&ctz=America%2FChicago&showPrint=0&showTitle=0&mode=AGENDA&showCalendars=0&src=c_b26bf041388e05bdfd0e4deda9fb83eb97d8b40285079c48b12496f2eceb233a@group.calendar.google.com&color=%23ef6c00

gravatar.com (1 resources)

Images (1)

• https://s.gravatar.com/avatar/f018d0710c707024e5ad34f1b0dec4a6?s=120&r=pg&d=https%3A%2F%2Fwww.cs124.org%2Fimages%2Flogo-120x120.png

Inspected on November 21, 2025 at 18:57 UTC