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

sina.com

https://sina.com· First analyzed 15 Feb 2026· Updated 15 Feb 2026

Export

sina.com

Sponsored

Hosting Provider

Obliviate LLC

IP Address

64.71.151.11

Server Location

🇺🇸 Logan, United States

ASN

AS6939

Organization

Obliviate LLC

Server

Nginx

Nameservers

ns4.sina.com.cn.ns3.sina.com.ns1.sina.com.ns2.sina.com.+4 more

Performance

Page Speed

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

BigCommerce

Technology Stack

1 Technologies Detected

Web Servers

Nginxv1.5.2

SEO Analysis

F17/100

sina.comsina.com

新浪网

新浪网为全球用户24小时提供全面及时的中文资讯，内容覆盖国内外突发新闻事件、体坛赛事、娱乐时尚、产业资讯、实用信息等，设有新闻、体育、娱乐、财经、科技、房产、汽车等30多个内容频道，同时开设博客、视频、论坛等自由互动交流空间。

Title Length3 chars

Recommended: 50-60 chars

Description Length113 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

8 issues found

Upgrade to view details

Sponsored

Security Score

71%Good

Static / Informational

HTTPS

No WAF

334d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

17.12.2025

Valid Until

15.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (20)

*.ting.weibo.coms.img.mix.sina.com.cns3.tousu.sina.com.cn*.storage.weibo.com*.biz.weibo.com*.weibo.com*.forecast.sina.cnt.cn+12 more

SHA-256 Fingerprint

70:3E:D8:F4:78:14:2D:C0:3C:B0:FB:16:37:D1:D3:7B:F5:C4:16:9B...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

server

nginx/1.5.2

date

Sun, 15 Feb 2026 06:27:37 GMT

content-type

text/html

last-modified

Sun, 06 Apr 2025 10:27:19 GMT

transfer-encoding

chunked

connection

keep-alive

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (3)

freemx3.sinamail.sina.com.cn

freemx1.sinamail.sina.com.cn

freemx2.sinamail.sina.com.cn

Domain Information

sina.com

Domain Age

27y 5m

Created

16.09.1998

Expires

15.09.2028

Last Updated

29.12.2025

Registrar

Xin Net Technology Corporation

DNSSEC

Not Enabled

Sponsored

Scripts & Styles

1 Resources

Scripts

Styles

Async

Defer

Top Script Sources

Sponsored

Last analyzed: 15 Feb 2026 at 06:28

Historical Analysis & Change Tracking