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

aon.com

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

Export

aon.com

Mobile

Sponsored

Hosting Provider

AON Corporation

IP Address

165.125.80.231

Server Location

🇺🇸 Chicago, United States

ASN

AS16875

Organization

AON Corporation

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

jacqueline.ns.cloudflare.com.gabe.ns.cloudflare.com.

Performance

Page Speed

1.1 MB

87 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Sitecore

Technology Stack

3 Technologies Detected

CSS Frameworks

Tailwind CSS

Tag Managers

Google Tag Manager

CDN

Cloudflare

SEO Analysis

B70/100

aon.comaon.com

Better Decisions | Aon

Aon is in the business of better decisions.

Title Length22 chars

Recommended: 50-60 chars

Description Length43 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

17 URLs

robots.txt

12 rules

Sitemap reference found

Sponsored

Security Score

66%Fair

Interactive

HTTPS

WAF

45d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

01.04.2025

Valid Until

31.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

*.aon.comaon.comaon.fiaon.ptaon.seaonbenfield.comaoncareers.comaonfitclub.nl+12 more

SHA-256 Fingerprint

96:CB:9B:0B:80:6D:8A:F3:F2:E7:AC:10:17:01:39:37:15:5E:15:3B...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

date

Sat, 14 Feb 2026 15:11:11 GMT

content-type

text/html

content-encoding

📦 Gzip(gzip)

cf-ray🇩🇪 Frankfurt

9cdd7f1f2bcedbc3-FRA

cf-cache-status

DYNAMIC

cache-control

🔴 No Cache(no-cache)

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

aon-com.mail.protection.outlook.com

Domain Information

aon.com

Domain Age

31 years

Created

14.02.1995

Expires

15.02.2027

Last Updated

11.02.2026

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

Helvetica Now Display + sans-serif

80/100

Readability

/30

32/40

14px · LH 1.57

Hierarchy

/20

25/25

4.57x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Helvetica Now Display

Sans64px

Body Font

sans-serif

Sans14px

Contrast Ratio

Reading Comfort

~71 CPL

Optimal (45–75)

64px

52px

44px

36px

14px

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

✅ Optimal line spacing: 1.57 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 4.6x larger than body text.

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

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

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

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

8 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.cookielaw.org(3)local(2)metrics.aon.com(1)players.brightcove.net(1)

Website Identity

Facebook X (Twitter)LinkedIn

Sponsored

Last analyzed: 14 Feb 2026 at 15:11

Historical Analysis & Change Tracking