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更新时间：2026-09-01 09:34
语言：英语（默认）
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Cloudflare
主机
Google Workspace
位置
United States
所有爬虫
🐻 Bear necessities for state management in React
网站信息概览
从公开技术信号来看，域名长期存在且接入成熟网络服务，这些独立信号共同指向更稳定的运营投入，但不能单独证明内容或交易绝对可信。从公开技术信号来看，当规范链接、描述或分享字段共同不足时，搜索平台更依赖自行推断，可能出现摘要偏题、图片缺失或权重分散。
域名与注册信息
该域名注册于 2014 年，已有约 12 年历史。域名处于正常锁定状态，可降低未经授权转移的风险。现有迹象表明，域名由 Cloudflare, Inc 管理，可通过其标准渠道处理注册事务。顶级域为 .io，本身不提供额外的身份信号。
DNS 与邮件配置
存在 MX 记录，但未检测到 SPF、DKIM 或 DMARC。从公开技术信号来看，名称服务器由 Cloudflare 提供，使用专业 DNS 托管。现有迹象表明，MX 记录使用 Google Workspace 企业邮箱服务。已检测到 CAA 记录，用于限定可签发证书的 CA。该主机名未使用别名记录。
TLS 与证书
公钥算法为 EC，密钥长度 256 位。服务器返回了完整证书链。证书只提供域名身份信息，未见组织字段。现有迹象表明，证书由 Google Trust Services 的云或 CDN 体系签发。TLS 证书采用约 90 天的短有效期。
HTTP 响应
HTTP 安全策略部分覆盖，仍需补充 CSP、Permissions-Policy、点击劫持防护。Access-Control-Allow-Origin 设置为通配符。HTTP 头没有直接暴露后端框架。综合当前可观察字段，响应中的 cf-ray 表明流量经过 CDN 或缓存代理。响应头没有可识别的内部信息泄露。
技术栈分析
结合现有公开信息推测，公开信号足以推测网站使用 Cloudflare，却不足以确定版本。外部扫描仍可能围绕这些技术展开，只是无法直接命中特定版本范围。
SEO 与社交分享
首页描述：未知。首页未检测到 Canonical 规范链接。页面未检测到 Open Graph 元数据。页面标题长度为 46 个字符，处于常用展示范围。当前首页面向常规搜索抓取开放。
主机和电子邮件
页面、搜索与分享信息
| 页面描述 | 未检测到 |
|---|---|
| 规范链接 | 未检测到 |
| 语言 | 英语（默认） |
| Twitter Card | 未检测到 |
未知
robots.txt （在新窗口打开）
128 条规则所有爬虫 0 条允许 · 128 条禁止
/en/coverage-5.5//en/coverage-5.4//en/coverage-5.3.1//en/coverage-5.3//en/coverage-5.2.1//en/coverage-5.2//en/coverage-5.1//en/coverage-5.0.4//en/coverage-5.0.3//en/coverage-5.0.2//en/coverage-5.0.1//en/coverage-5.0//en/coverage-4.5.4//en/coverage-4.5.3//en/coverage-4.5.2//en/coverage-4.5.1//en/coverage-4.5//en/coverage-4.4.2//en/coverage-4.4.1//en/coverage-4.4//en/coverage-4.3.4//en/coverage-4.3.3//en/coverage-4.3.2//en/coverage-4.3.1//en/coverage-4.3//en/coverage-4.2//en/coverage-4.1//en/coverage-4.0.3//en/coverage-4.0.2//en/coverage-4.0.1//en/coverage-4.0//en/7.9.2//en/7.9.1//en/7.9.0//en/7.8.2//en/7.8.1//en/7.8.0//en/7.7.1//en/7.7.0//en/7.6.9//en/7.6.8//en/7.6.7//en/7.6.6//en/7.6.5//en/7.6.4//en/7.6.3//en/7.6.2//en/7.6.12//en/7.6.11//en/7.6.10//en/7.6.1//en/7.6.0//en/7.5.4//en/7.5.3//en/7.5.2//en/7.5.1//en/7.5.0//en/7.4.4//en/7.4.3//en/7.4.2//en/7.4.1//en/7.4.0//en/7.3.4//en/7.3.3//en/7.3.2//en/7.3.1//en/7.3.0//en/7.2.7//en/7.2.6//en/7.2.5//en/7.2.4//en/7.2.3//en/7.2.2//en/7.2.1//en/7.2.0//en/7.15.3//en/7.15.2//en/7.15.1//en/7.15.0//en/7.14.2//en/7.14.1//en/7.14.0//en/7.13.5//en/7.13.4//en/7.13.3//en/7.13.2//en/7.13.1//en/7.13.0//en/7.12.0//en/7.11.3//en/7.11.2//en/7.11.1//en/7.11.0//en/7.10.7//en/7.10.6//en/7.10.5//en/7.10.4//en/7.10.3//en/7.10.2//en/7.10.1//en/7.10.0//en/7.1.0//en/7.0.5//en/7.0.4//en/7.0.3//en/7.0.2//en/7.0.1//en/7.0.0b1//en/7.0.0//en/6.6.0b1//en/6.4.4//en/6.4.3//en/6.4.2//en/6.4.1//en/6.4//en/6.3.3//en/6.3.2//en/6.3.1//en/6.3//en/6.2//en/6.1.2//en/6.1.1//en/6.1//en/6.0b1//en/6.0.2//en/6.0.1//en/6.0//en/4.5.4/
没有符合条件的规则。
Sitemaps
1
域名登记事实 RDAP / WHOIS
| 注册商 | Cloudflare, Inc |
|---|---|
| 注册时间 | 2014-06-14 |
| 到期时间 | 2028-06-14 |
| 域名状态 | clientTransferProhibited https://icann.org/epp#clientTransferProhibited |
| 名称服务器 | ivan.ns.cloudflare.com、tegan.ns.cloudflare.com |
| DNSSEC | unsigned |
DNS 记录
| 类型 | 名称 | 值 | TTL | 优先级 |
|---|---|---|---|---|
| A | coverage.readthedocs.io | 104.16.253.120 | 300 | — |
| A | coverage.readthedocs.io | 104.16.254.120 | 300 | — |
| AAAA | coverage.readthedocs.io | 2606:4700::6810:fd78 | 300 | — |
| AAAA | coverage.readthedocs.io | 2606:4700::6810:fe78 | 300 | — |
| MX | readthedocs.io | aspmx.l.google.com | 300 | 1 |
| MX | readthedocs.io | alt1.aspmx.l.google.com | 300 | 5 |
| MX | readthedocs.io | alt2.aspmx.l.google.com | 300 | 5 |
| MX | readthedocs.io | aspmx2.googlemail.com | 300 | 10 |
| MX | readthedocs.io | aspmx3.googlemail.com | 300 | 10 |
| NS | readthedocs.io | ivan.ns.cloudflare.com | 86400 | — |
| NS | readthedocs.io | tegan.ns.cloudflare.com | 86400 | — |
| CAA | readthedocs.io | 0 issue " amazontrust.com" | 185 | — |
| CAA | readthedocs.io | 0 issue "comodoca.com" | 185 | — |
| CAA | readthedocs.io | 0 issue "digicert.com; cansignhttpexchanges=yes" | 185 | — |
| CAA | readthedocs.io | 0 issue "letsencrypt.org" | 185 | — |
| CAA | readthedocs.io | 0 issue "pki.goog; cansignhttpexchanges=yes" | 185 | — |
| CAA | readthedocs.io | 0 issue "ssl.com" | 185 | — |
| CAA | readthedocs.io | 0 issuewild "amazonaws.com" | 185 | — |
| CAA | readthedocs.io | 0 issuewild "comodoca.com" | 185 | — |
| CAA | readthedocs.io | 0 issuewild "digicert.com; cansignhttpexchanges=yes" | 185 | — |
| CAA | readthedocs.io | 0 issuewild "letsencrypt.org" | 185 | — |
| CAA | readthedocs.io | 0 issuewild "pki.goog; cansignhttpexchanges=yes" | 185 | — |
| CAA | readthedocs.io | 0 issuewild "ssl.com" | 185 | — |
TLS 与证书
| 定性结果 | 配置正常 |
|---|---|
| 支持协议 | TLSv1.2、TLSv1.3 |
| 协商协议 | TLSv1.3 |
| 证书主题 | readthedocs.io |
| 颁发者 | Google Trust Services |
| 有效期至 | 2026-10-25T13:31 · 记录时剩余 54 天 |
| 验证事实 | 证书信任：通过 · 域名匹配：通过 |
HTTP 响应标头
| 标头 | 值 |
|---|---|
| content-type | text/html; charset=utf-8 |
| cache-control | max-age=1800, stale-if-error=86400, public |
| server | cloudflare |
| strict-transport-security | max-age=31536000; includeSubDomains; preload |
| x-content-type-options | nosniff |
| referrer-policy | no-referrer-when-downgrade |
| access-control-allow-origin | * |
| set-cookie | 已脱敏 |
已识别技术
Cloudflare
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