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

asco.org

https://asco.org· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

asco.org

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

18.165.140.8

Server Location

🇫🇮 Helsinki, Finland

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

CDN

CloudFront

Nameservers

ns-1033.awsdns-01.org.ns-1786.awsdns-31.co.uk.ns-705.awsdns-24.net.ns-95.awsdns-11.com.

Performance

Page Speed

3.8 MB

193 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

CMS

Ghost

Infrastructure

Hosting

Amazon Web Services (AWS)

CDN

CloudFront

Technology Stack

14 Technologies Detected

Analytics

Google Analytics

Facebook Pixel FullStory Amplitude

Advertising

Twitter Ads LinkedIn Ads Microsoft Advertising

Frameworks

CSS Frameworks

Icon Libraries

Font Awesome Material Icons

Fonts

Google Fonts

SEO Analysis

D41/100

asco.orgasco.org

American Society of Clinical Oncology - ASCO

No description available for this page.

Title Length44 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description - important for click-through rates

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

1,845 URLs

robots.txt

2 rules

Allows all crawlers

Sponsored

A+

Security Score

100%Excellent

Static / Informational

HTTPS

No WAF

281d

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

27.10.2025

Valid Until

25.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (7)

asco.org*.asco.orgtapur.org*.conquer.org*.prod.asco.org*.tapur.orgconquer.org

SHA-256 Fingerprint

83:59:3C:85:4D:ED:CF:DD:3D:6A:A3:02:41:54:F9:81:2F:54:2F:7F...

Upgrade to view header details

HTTP Headers

Developer Console

age

3067

cache-control

🔵 1 Week('public, max-age=604800')

content-length

218893

content-security-policy

base-uri 'self' https://md-scp.kampyle.com; form-action 'sel...

content-type

text/html; charset=utf-8

date

Tue, 17 Feb 2026 12:12:24 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (3)

mx2.asco.iphmx.com

mx1.asco.iphmx.com

smtp.asco.org

Domain Information

asco.org

Domain Age

30y 5m

Created

20.09.1995

Expires

19.09.2030

Last Updated

13.12.2022

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Typography & Readability

Roboto

88/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

25/25

2.06x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Roboto

Sans33px

Body Font

Roboto

Sans16px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

33px

20px

16px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.1x larger than body text.

✅ Good performance: Using 1 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

10 Tools Detected

Enterprise

Behavior Analytics

FullStoryEnterprise

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

LinkedIn AdsEnterprise

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Social Media

Facebook SDKFree

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

assets.adobedtm.com(5)bat.bing.com(3)edge.fullstory.com(2)connect.facebook.net(2)snap.licdn.com(2)

Website Identity

asco.org

30 years old

Network Solutions, LLC

Social Profiles

Facebook X (Twitter)Instagram LinkedIn YouTube Bluesky

Sponsored

Last analyzed: 17 Feb 2026 at 13:03

Historical Analysis & Change Tracking