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

att.com

https://att.com· First analyzed 11 Feb 2026· Updated 11 Feb 2026

Export

att.com

Mobile

Sponsored

Hosting Provider

AT&T Services, Inc.

IP Address

144.160.36.42

Server Location

🇺🇸 Frisco, United States

ASN

AS797

Organization

AT&T Services, Inc.

CDN

Akamai

WAF

Akamai

Nameservers

a22-67.akam.net.a1-187.akam.net.a11-65.akam.net.a5-66.akam.net.+2 more

Performance

Page Speed

2.1 MB

126 requests

0–49

50–89

90–100

Architecture Stack

Hybrid

⚙️ SSR

Frontend

Framework

Next.js

CMS

BigCommerce

Infrastructure

Hosting

AT&T Services, Inc.

CDN

Akamai

Technology Stack

13 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

Meta Frameworks

Next.js Nuxt.js

Advertising

Google Ads Microsoft Advertising

Customer Support

Frameworks

CSS Frameworks

Tag Managers

SEO Analysis

A88/100

att.comatt.com

AT&T Official Site | Our Best Wireless & Internet Service

Get our best deals on phones and internet, backed by the AT&T Guarantee. Explore the new iPhone 17, get 24/7 support, pay bills, and manage your account online.

Title Length57 chars

Recommended: 50-60 chars

Description Length160 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (2/2)

1 issues found

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Security Score

66%Fair

Interactive

HTTPS

WAF

62d

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

aka-global-request-id-uxtime

0.aa7a7b5c.1770786877.496e67f

att-application-group

uf-marketing

att-appshell-path

/marketing/

cache-control

🔴 No Cache(no-cache)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

Good Warning Issue

Typography & Readability

font-regular

16/100

Readability

/30

5/40

12px · LH 1.00

Hierarchy

/20

8/25

1.33x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

font-regular

Sans16px

Body Font

font-regular

Sans12px

Contrast Ratio

Reading Comfort

~42 CPL

Needs attention

16px

48px

34px

12px

❌ Critical: 12px body text is too small. Increase to at least 14px.

⚠️ Tight line spacing (1.00). Consider 1.4-1.6 for better readability.

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

✅ 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

6 Tools Detected

Enterprise

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

Quantum MetricEnterprise

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(10)att.com(3)googletagmanager.com(2)d9.flashtalking.com(1)scripts.clarity.ms(1)

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Last analyzed: 11 Feb 2026 at 05:15

Historical Analysis & Change Tracking