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HTTP Status

200

Ping

6 ms

Technologies

8

Technologies Detected

Frameworks (1)

Framework
Astro logo

Astro is a modern static site generator that focuses on content-focused websites with minimal JavaScript.

Infrastructure & Network (2)

CDN
Fastly logo

Fastly is a modern content delivery network and edge cloud platform that provides real-time content delivery, security, and edge computing services.

Web Server
Varnish logo

Varnish Cache is a high-performance HTTP accelerator and reverse proxy designed for content-heavy dynamic websites.

SSL & Certificates (3)

Certificate Authority
DigiCert logo

DigiCert is a leading certificate authority that provides SSL/TLS certificates, code signing certificates, and PKI solutions.

Certificate Authority
Let's Encrypt logo

Let's Encrypt is a free, automated, and open certificate authority run by the Internet Security Research Group (ISRG).

Certificate Authority
Sectigo logo

Sectigo is a leading certificate authority that provides SSL/TLS certificates, code signing certificates, and PKI solutions.

Other (2)

Development
GitHub logo

GitHub is a web-based platform for version control and collaboration using Git.

Development
Starlight logo

Starlight is a documentation framework built on Astro that helps teams build fast, accessible documentation sites.

0.34.0

Metadata & SEO

Title
Introduction | Retrofit
Canonical URL
https://square.github.io/retrofit/
Language
en
Viewport
width=device-width, initial-scale=1
Generator
Starlight v0.34.0

SSL/TLS Certificate

View Full SSL Report
Issued By
C=US, O=Let's Encrypt, CN=R12
Security Score
75 /100

Social Media Cards

OpenGraph (5 properties)

Type
article
Title
Introduction
Url
https://square.github.io/retrofit/
Locale
en
Site Name
Retrofit

Twitter Cards (1 properties)

Card
summary_large_image

Network & Hosting

View DNS Records
Fastly
Reverse DNS: cdn-185-199-108-153.github.com
Inspected on April 10, 2026 at 06:51 UTC