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

foobar2000.org

https://foobar2000.org· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

foobar2000.org

Sponsored

Hosting Provider

Manx Telecom Ltd

IP Address

80.65.253.36

Server Location

🇮🇲 Douglas, Isle of Man

ASN

AS13122

Organization

Manx Telecom Ltd

Server

Apache

Nameservers

ns-72-a.gandi.net.ns-38-b.gandi.net.ns-152-c.gandi.net.

Performance

Page Speed

51 KB

4 requests

Image Optimization

WebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Manx Telecom Ltd

Technology Stack

2 Technologies Detected

Web Servers

Apache

Languages

PHPv8.2.30

SEO Analysis

D58/100

foobar2000.orgfoobar2000.org

foobar2000

Title Length10 chars

Recommended: 50-60 chars

Description Length10 chars

Recommended: 120-160 chars

Issues (0)

6 issues found

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Sponsored

Security Score

71%Good

Static / Informational

HTTPS

No WAF

73d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

03.02.2026

Valid Until

04.05.2026

Subject Alternative Names (20)

alpha.foobar2000.orgalt.foobar2000.orgawqdb.foobar2000.orgbogus.foobar2000.orgbogus.xn--pawowski-8ob.comcrash.foobar2000.orgdownload.foobar2000.comdownload.foobar2000.org+12 more

SHA-256 Fingerprint

2B:17:2D:D4:83:E7:1F:D5:FA:BD:BA:61:C6:24:B0:4B:D5:26:2A:E4...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

Keep-Alive

content-type

text/html; charset=UTF-8

date

Fri, 20 Feb 2026 04:18:50 GMT

keep-alive

timeout=5, max=100

server

Apache

transfer-encoding

chunked

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mail.foobar2000.org

Domain Information

foobar2000.org

Domain Age

22y 9m

Created

12.05.2003

Expires

12.05.2027

Last Updated

24.03.2025

Registrar

Gandi SAS

DNSSEC

Not Enabled

Typography & Readability

Tahoma

75/100

Readability

/30

32/40

14px · LH 1.50

Hierarchy

/20

15/25

1.2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Tahoma

Sans17px

Body Font

Tahoma

Sans14px

Contrast Ratio

Reading Comfort

~50 CPL

Optimal (45–75)

17px

15px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

✅ Good performance: Using 1 font families keeps load times fast.

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Optimal line length: ~50 characters per line is comfortable to read.

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Scripts & Styles

1 Resources

Scripts

Styles

Async

Defer

Top Script Sources

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Last analyzed: 20 Feb 2026 at 04:19

Historical Analysis & Change Tracking