What does StackOptic analyze?

StackOptic runs 18 analysis modules on any public website from a single URL. It detects 7,000+ technologies (CMS, frameworks, analytics, payments, CDN, hosting), evaluates SSL certificates and HTTP security headers with grades from A+ to F, measures Core Web Vitals (LCP, CLS, TBT, FCP), audits SEO meta tags and structured data, checks email security (SPF, DKIM, DMARC), analyzes AI & LLM readiness including bot access and llms.txt validation, extracts color palettes and typography, estimates carbon footprint, and generates permanent shareable reports.

Does it work on sites behind Cloudflare or bot protection?

Yes. StackOptic uses a real browser engine that loads pages exactly like a human visitor — executing JavaScript, rendering CSS, and handling redirects. This allows it to bypass Cloudflare, LiteSpeed, Sucuri, and other bot protection systems where traditional crawlers and HTTP-only tools fail.

What do I get on the free plan?

The free plan includes 5 analyses per day with access to all 18 modules, full scores, technology detection, and security grades. Every report is permanently accessible via a unique shareable URL — no login required to view. No credit card needed. AI-powered insights, re-analysis, PDF/JSON export, and comparison features are available on Pro ($24/mo) and Agency ($99/mo) plans.

What is AI & LLM readiness analysis?

This module evaluates how visible and citable your website is to AI search engines like ChatGPT, Perplexity, Google AI Overviews, and Claude. It audits access permissions for 8 major AI bots, validates llms.txt and llms-full.txt files, scores citation-ready content structure, and analyzes structured data (JSON-LD) for GEO readiness — helping you rank in the next generation of search.

How long does an analysis take?

Most analyses complete in under 10 seconds. StackOptic runs all 18 modules in parallel using a real browser session, so you get technology detection, security audit, performance metrics, SEO analysis, and AI readiness scoring simultaneously.

How accurate are the results?

Detection is based on real browser execution — DOM inspection, JavaScript runtime analysis, HTTP headers, and DNS records. With 7,000+ technology signatures and Lighthouse-calibrated performance scoring, StackOptic achieves high accuracy for mainstream technologies.

What security checks are performed?

The security module evaluates SSL/TLS certificates, 12+ HTTP security headers (HSTS, CSP, X-Frame-Options, Permissions-Policy, Referrer-Policy), HTTPS enforcement, and email authentication (SPF, DKIM, DMARC). Each site receives a letter grade from A+ to F with specific remediation steps.

Do you store the websites I analyze?

StackOptic only stores publicly available information that any visitor to a website would see — HTML content, HTTP headers, DNS records, and screenshots. We do not access private data, log in to websites, or perform any intrusive testing.

Back to Search

virgin.com

https://virgin.com· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

virgin.com

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

3.164.206.31

Server Location

🇫🇮 Helsinki, Finland

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

Server

AmazonS3

CDN

CloudFront

Nameservers

nsgbr.comlaude.co.uk.nssui.comlaude.ch.nsusa.comlaude.net.

Performance

Page Speed

919 KB

46 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

JAMstack

⚡ SSG

Decoupled

Frontend

Framework

Next.js

API

Data Source

Headless CMS

Contentful

Infrastructure

Hosting

Amazon Web Services (AWS)

CDN

CloudFront

Progressive Web App

Web ManifestApple Touch IconTheme Color

Detected API Sources

//images.ctfassets.net/rxqefef...

Technology Stack

11 Technologies Detected

Fonts

Google Fonts Adobe Fonts (Typekit)Adobe Fonts

Meta Frameworks

Analytics

Other

CSS Frameworks

Tag Managers

Security

SEO Analysis

B76/100

virgin.comvirgin.com

Official site | Virgin

We’re the official home of the Virgin Group and Branson family. Get the latest from Richard Branson and the Virgin companies.

Title Length22 chars

Recommended: 50-60 chars

Description Length125 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

2,960 URLs

robots.txt

5 rules

Sitemap reference found

Sponsored

Security Score

76%Good

Static / Informational

HTTPS

WAF

326d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

08.12.2025

Valid Until

06.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

com.prod.red.virgin.comwww.virgin.com

SHA-256 Fingerprint

0F:AB:A6:D4:A0:05:59:E4:F0:32:6F:9E:69:19:D0:51:21:7A:67:8D...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-security-policy

frame-ancestors https://app.contentful.com;

content-type

text/html

date

Sat, 14 Feb 2026 03:31:56 GMT

etag

W/"150a9140f009aed2ee81d75ca17137be"

last-modified

Thu, 12 Feb 2026 09:54:07 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (3)

eu-smtp-inbound-1.mimecast.com

eu-smtp-inbound-2.mimecast.com

virgin-com.mail.protection.outlook.com

Domain Information

virgin.com

Domain Age

28y 5m

Created

10.09.1997

Expires

09.09.2026

Last Updated

10.08.2025

Registrar

Nom-iq Ltd. dba COM LAUDE

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Typography & Readability

utopia-std + sans-serif

60/100

Readability

/30

17/40

15px · LH 4.27

Hierarchy

/20

25/25

3.73x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

utopia-std

Serif56px

Body Font

sans-serif

Sans15px

Contrast Ratio

Reading Comfort

Serif Headlines + Sans Body

left aligned

56px

28px

15px

⚠️ Small text: 15px may be hard to read on mobile. Consider 16px+.

⚠️ Wide line spacing (4.27). Consider 1.4-1.8 for better flow.

✅ Strong hierarchy: Headlines are 3.7x larger than body text.

✅ Good performance: Using 2 font families keeps load times fast.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

⚠️ Cramped layout: 10 elements lack adequate spacing.

GGoogle Fonts AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

16 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(10)googletagmanager.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn

Sponsored

Last analyzed: 14 Feb 2026 at 03:32

Historical Analysis & Change Tracking