CLINICALTRIALS.GOV 网站分析
CLINICALTRIALS.GOV 的 SEO 统计信息上次更新是在 60 天前。 我们已启动该网站的后台分析任务，请稍等几分钟。
基本信息
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页面信息
标题:
Home - ClinicalTrials.gov
Meta 关键词:
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Meta 描述信息:
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H1 Tag:
ClinicalTrials.gov is a database of privately and publicly funded clinical studies conducted around the world.
内部链接:
48 (0 nofollow)
外部链接:
12 (0 nofollow)
建站技术
HTTP Head 分析
HTTP 协议采用了请求与响应模型，通过 HTTP Header 定义了 HTTP 传输过程中的必要参数。 浏览器（例如 Internet Explorer, Google Chrome, Firefox 等）并不会显示 HTTP header 字段的内容，下面是网站 clinicaltrials.gov 的 HTTP header 信息:
HTTP/1.1 200 OK
Date: Tue, 09 Jun 2020 00:05:48 GMT
Server: Apache
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
Expires: Tue, 09 Jun 2020 06:05:48 GMT
Content-Type: text/html;charset=UTF-8
Vary: Accept-Encoding
Content-Encoding: gzip
Set-Cookie: Psid=vihzm6CLCR8LWTHncyz3FQ7V9ghH0gcB-RcGz6hH5R0H0gzqFKhVSg0kCD8V; Expires=Wed, 09-Jun-2021 05:54:16 GMT; Path=/; Secure
Set-Cookie: CTOpts=Qihzm6CLCR8LWTHncyUgzw-R98F5xRjPBK4w; Expires=Tue, 09-Jun-2020 00:25:48 GMT; Path=/; Secure
X-UA-Compatible: IE=Edge
X-XSS-Protection: 1; mode=block
Transfer-Encoding: chunked
Date: Tue, 09 Jun 2020 00:05:48 GMT
Server: Apache
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
Expires: Tue, 09 Jun 2020 06:05:48 GMT
Content-Type: text/html;charset=UTF-8
Vary: Accept-Encoding
Content-Encoding: gzip
Set-Cookie: Psid=vihzm6CLCR8LWTHncyz3FQ7V9ghH0gcB-RcGz6hH5R0H0gzqFKhVSg0kCD8V; Expires=Wed, 09-Jun-2021 05:54:16 GMT; Path=/; Secure
Set-Cookie: CTOpts=Qihzm6CLCR8LWTHncyUgzw-R98F5xRjPBK4w; Expires=Tue, 09-Jun-2020 00:25:48 GMT; Path=/; Secure
X-UA-Compatible: IE=Edge
X-XSS-Protection: 1; mode=block
Transfer-Encoding: chunked
DNS 记录分析
DNS 域名系统（Domain Name System，缩写）是 Internet 的一项基础服务。它作为将域名和IP地址相互映射的一个分布式数据库，能够使人更方便地访问互联网。clinicaltrials.gov 当前共有 14 项 DNS 记录。
| 主机 | 类型 | IP/目标 | TTL | 扩充信息 |
|---|---|---|---|---|
| clinicaltrials.gov | A | 30 | ||
| clinicaltrials.gov | A | 30 | ||
| clinicaltrials.gov | A6 | 2607:f220:41e:7081::50 | 30 | |
| clinicaltrials.gov | A6 | 2607:f220:41f:8000::96 | 30 | |
| clinicaltrials.gov | AAAA | 2607:f220:41e:7081::50 | 30 | |
| clinicaltrials.gov | AAAA | 2607:f220:41f:8000::96 | 30 | |
| clinicaltrials.gov | MX | 1800 | pri: 10 | |
| clinicaltrials.gov | MX | 1800 | pri: 10 | |
| clinicaltrials.gov | MX | 1800 | pri: 10 | |
| clinicaltrials.gov | NS | 60 | ||
| clinicaltrials.gov | NS | 60 | ||
| clinicaltrials.gov | NS | 60 | ||
| clinicaltrials.gov | SOA | 60 | expire: 604800 serial: 2016062402 | |
| clinicaltrials.gov | TXT | GrclYGeUpoKjW0RtHDm8IoEXyQddPqL5pdiiXvLuV7za7OiNXC+wgFWXKhBJGAt5m6Qx3pTXVsPlpI18d7ykiQ== | 1800 |