How do I install the Site Analyze skill?

Run npx skillmds@latest add dvcrn/site-analyze in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Site Analyze safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: PASS, Skill Scanner: PASS. Capability flags: executes scripts, makes network calls. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Site Analyze?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Site Analyze free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Site Analyze?

dvcrn (@dvcrn) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Site Analyze by dvcrn — Agent Skill

Name: Site Analyze
Rating: 4.2 (5 reviews)
Author: dvcrn

Site Analyze

网站机房溯源全维度分析工具。当用户要求分析某个网站的机房位置、CDN、IP归属、路由链路、响应延迟、SSL证书、子域名等信息时使用。支持通过 DNS over HTTPS（阿里/腾讯/360）查询绕过UDP封锁，自动识别 Cloudflare、Akamai、阿里云、腾讯云等主流CDN，输出完整的溯源分析报告。

dvcrn Updated Sep 8, 2026 32 repo stars

File contents

Site Analyze — Website Infrastructure Tracer

Runs 9 analysis modules and prints a full infrastructure report for any domain. No API keys required. Works from any network with outbound HTTPS access.

Usage

python3 scripts/site-analyze.py <domain>

Accepts bare domains or full URLs (scheme/path stripped automatically):

python3 scripts/site-analyze.py example.com
python3 scripts/site-analyze.py https://example.com/some/path

Analysis Modules

#	Module	Method
0	DoH server probe	Auto-detects working DNS-over-HTTPS servers from 8 candidates
1	DNS resolution	Multi-server DoH (Google/CF/Quad9/AliDNS/DNSPod/360/AdGuard/OpenDNS) + A/AAAA/MX/NS/TXT/SOA
2	IP geolocation & CDN	ipinfo.io + built-in ASN→CDN database (Cloudflare, Akamai, Fastly, AWS, Aliyun, Tencent…)
3	Subdomain enumeration	Common subdomain DoH scan + crt.sh CT logs + HackerTarget; ⭐ flags non-CDN IPs
4	TCP latency	Python socket, 80+443, 3 samples each; warns when IP is anycast
5	HTTP/HTTPS headers	curl; extracts CF-RAY, server, x-powered-by, via, proxy-agent, x-cache…
6	HTTPS timing breakdown	curl: DNS / TCP / TLS / TTFB / total; estimates one-way RTT to edge
7	SSL certificate	openssl: issuer, subject, SAN, validity dates
8	TCP traceroute	tcptraceroute (fallback: ICMP traceroute)
9	Summary & verdict	Auto-flags discovered origin IPs; advises on CDN-hidden origins

Reading Results

TCP latency low but TTFB high → target uses Anycast edge; real origin is farther away
anycast: true on an IP → TCP latency reflects nearest PoP, not origin location; use TTFB
CF-RAY suffix → Cloudflare PoP that handled the request (AMS = Amsterdam, SJC = San Jose…)
proxy-agent: VM-xxx-centos in a 502 → origin server info leaked by Cloudflare error
⭐ subdomain → resolves to a non-CDN IP; likely the real origin

Dependencies

Python 3.6+ (stdlib only)
curl (headers + timing)
openssl (SSL cert)
tcptraceroute or traceroute (optional; traceroute step skipped if absent)

---name: site-analyzedescription: 网站机房溯源全维度分析工具。当用户要求分析某个网站的机房位置、CDN、IP归属、路由链路、响应延迟、SSL证书、子域名等信息时使用。支持通过 DNS over HTTPS（阿里/腾讯/360）查询绕过UDP封锁，自动识别 Cloudflare、Akamai、阿里云、腾讯云等主流CDN，输出完整的溯源分析报告。---# Site Analyze — Website Infrastructure TracerRuns 9 analysis modules and prints a full infrastructure report for any domain.No API keys required. Works from any network with outbound HTTPS access.## Usage```bashpython3 scripts/site-analyze.py <domain>```Accepts bare domains or full URLs (scheme/path stripped automatically):```bashpython3 scripts/site-analyze.py example.compython3 scripts/site-analyze.py https://example.com/some/path```## Analysis Modules| # | Module | Method ||---|--------|--------|| 0 | DoH server probe | Auto-detects working DNS-over-HTTPS servers from 8 candidates || 1 | DNS resolution | Multi-server DoH (Google/CF/Quad9/AliDNS/DNSPod/360/AdGuard/OpenDNS) + A/AAAA/MX/NS/TXT/SOA || 2 | IP geolocation & CDN | ipinfo.io + built-in ASN→CDN database (Cloudflare, Akamai, Fastly, AWS, Aliyun, Tencent…) || 3 | Subdomain enumeration | Common subdomain DoH scan + crt.sh CT logs + HackerTarget; ⭐ flags non-CDN IPs || 4 | TCP latency | Python socket, 80+443, 3 samples each; warns when IP is anycast || 5 | HTTP/HTTPS headers | curl; extracts CF-RAY, server, x-powered-by, via, proxy-agent, x-cache… || 6 | HTTPS timing breakdown | curl: DNS / TCP / TLS / TTFB / total; estimates one-way RTT to edge || 7 | SSL certificate | openssl: issuer, subject, SAN, validity dates || 8 | TCP traceroute | tcptraceroute (fallback: ICMP traceroute) || 9 | Summary & verdict | Auto-flags discovered origin IPs; advises on CDN-hidden origins |## Reading Results- **TCP latency low but TTFB high** → target uses Anycast edge; real origin is farther away- **`anycast: true`** on an IP → TCP latency reflects nearest PoP, not origin location; use TTFB- **CF-RAY suffix** → Cloudflare PoP that handled the request (AMS = Amsterdam, SJC = San Jose…)- **`proxy-agent: VM-xxx-centos`** in a 502 → origin server info leaked by Cloudflare error- **⭐ subdomain** → resolves to a non-CDN IP; likely the real origin## Dependencies- Python 3.6+ (stdlib only)- `curl` (headers + timing)- `openssl` (SSL cert)- `tcptraceroute` or `traceroute` (optional; traceroute step skipped if absent)

Frequently asked questions