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

openssh.com

https://openssh.com· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

openssh.com

Sponsored

Hosting Provider

Rasselas

IP Address

199.185.178.80

Server Location

🇨🇦 Calgary, Canada

ASN

AS22512

Organization

Rasselas

Server

OpenBSD httpd

Nameservers

a.ns.bsws.de.b.ns.bsws.de.europe1.dnsnode.net.auth5.ns.gin.ntt.net.+6 more

Performance

Page Speed

103 KB

2 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Rasselas

SEO Analysis

D41/100

openssh.comopenssh.com

OpenSSH

the main OpenSSH page

Title Length7 chars

Recommended: 50-60 chars

Description Length21 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Missing viewport meta tag - page may not be mobile-friendly

7 issues found

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Sponsored

Security Score

71%Good

Static / Informational

HTTPS

No WAF

37d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

26.12.2025

Valid Until

26.03.2026

Subject Alternative Names (12)

ftplist1.openbsd.orglibressl.orgopenbsd.orgopeniked.orgopenssh.comopenssh.orgwww.libressl.orgwww.openbsd.org+4 more

SHA-256 Fingerprint

C4:E9:D7:8C:54:6D:58:A6:E0:4D:9B:71:DA:05:65:A0:36:51:C1:71...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

connection

keep-alive

content-length

3015

content-type

text/html

date

Tue, 17 Feb 2026 15:36:53 GMT

last-modified

Fri, 10 Oct 2025 08:38:20 GMT

server

OpenBSD httpd

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mail.openbsd.org

Domain Information

openssh.com

Domain Age

26y 4m

Created

25.10.1999

Expires

25.10.2026

Last Updated

27.10.2025

Registrar

InterNetX GmbH

DNSSEC

Not Enabled

Typography & Readability

Times New Roman

64/100

Readability

/30

30/40

16px · LH --

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Times New Roman

Serif

Body Font

Times New Roman

Serif16px

Contrast Ratio

Reading Comfort

~66 CPL

Optimal (45–75)

24px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ 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: ~66 characters per line is comfortable to read.

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Scripts & Styles

1 Resources

Scripts

Styles

Async

Defer

Top Script Sources

Website Identity

GitHub

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Last analyzed: 17 Feb 2026 at 15:37

Historical Analysis & Change Tracking