www.caltech.edu
挂号的
页面分析更新日期:
2026/02/25 17:40:13
上次 Whois 更新日期:
2026/07/17 05:37:24
域名状态
挂号的
付款至
31.07.2027
可从
30.08.2027
×
![全屏网站截图]()
www.caltech.edu 网站截图
搜索引擎优化得分
81.51%
119
取得的分数
146
最高分
主要信息
标题: Home
-
www.caltech.edu
描述: The California Institute of Technology aims to expand human knowledge and benefit society through research integrated with education.
关键词: 未知
页面编码:
utf-8
页面文件大小: 395 KB
服务器信息
IP: 172.64.151.221
地点: ,,,,,,
HTTP服务器: cloudflare
编码: utf-8
元标签列表
- charset: utf-8
- equiv: X-UA-Compatible content: IE=edge
- name: description content: The California Institute of Technology aims to expand human knowledge and benefit society through research integrated with education.
- name: viewport content: width=device-width, initial-scale=1
- name: msapplication-TileColor content: #D14900
- name: msapplication-TileImage content: /static/core/img/favicon-144.png?v=6.20.10
- name: msapplication-config content: /static/core/img/browserconfig.xml?v=6.20.10
- property: og:url content: https://www.caltech.edu/
- property: og:site_name content: California Institute of Technology
- property: og:title content: Caltech Homepage
- property: og:type content: website
- name: twitter:title content: Caltech Homepage
- property: og:description content: The California Institute of Technology aims to expand human knowledge and benefit society through research integrated with education.
- name: twitter:description content: The California Institute of Technology aims to expand human knowledge and benefit society through research integrated with education.
- property: og:image content: https://main.oscweb.caltech.edu/static/core/img/caltech-logo-400x400.png
- name: og:image:alt content: Caltech Logo
- name: twitter:card content: summary
- name: twitter:image content: https://main.oscweb.caltech.edu/static/core/img/caltech-logo-400x400.png
内部链接
外部链接
查询信息
update_date: 30-Jan-2026
update_time: 1769731200
expiration_date: 31-Jul-2027
expiration_time: 1816992000
Whois 原始数据
This Registry database contains ONLY .EDU domains.
The data in the EDUCAUSE Whois database is provided
by EDUCAUSE for information purposes in order to
assist in the process of obtaining information about
or related to .edu domain registration records.
The EDUCAUSE Whois database is authoritative for the
.EDU domain.
A Web interface for the .EDU EDUCAUSE Whois Server is
available at: http://whois.educause.edu
By submitting a Whois query, you agree that this information
will not be used to allow, enable, or otherwise support
the transmission of unsolicited commercial advertising or
solicitations via e-mail. The use of electronic processes to
harvest information from this server is generally prohibited
except as reasonably necessary to register or modify .edu
domain names.
-------------------------------------------------------------
Domain Name: CALTECH.EDU
Registrant:
California Institute of Technology
Information Management Systems and Services MS 1-10
1200 East California Boulevard
Pasadena, CA 91125
USA
Administrative Contact:
Domain Admin
California Institute of Technology
1200 E. California Blvd.
MS 1-10
Pasadena, CA 91125
USA
+1.6263953500
[email protected]
Technical Contact:
California Institute of Technology
1200 E. California Blvd.
MS 1-10
Pasadena, CA 91125
USA
+1.6263953500
[email protected]
Name Servers:
NS0090.SECONDARY.CLOUDFLARE.COM
NS0239.SECONDARY.CLOUDFLARE.COM
Domain record activated: 06-Jan-1986
Domain record last updated: 30-Jan-2026
Domain expires: 31-Jul-2027
Robots.txt
User-agent: SemrushBot Disallow: / User-agent: BLP_bbot Disallow: / User-agent: * Disallow: /campus-life-events/calendar/minicalendar/* Disallow: /map/landmark_ajax/* Disallow: /map/milestone/* Crawl-delay: 10 Allow: * Sitemap: https://www.caltech.edu/sitemap.xml
搜索引擎优化审核
技术搜索引擎优化
✓
响应代码
200
状态 200 正常 - 页面加载正确。
✓
字符编码
Page: utf-8, Header: utf-8
HTML 和标头之间的字符编码一致。
✓
页面尺寸
405200 bytes
页面大小可以接受快速加载。
!
资源
154 total
资源太多了。优化和组合文件以获得更好的性能。
✓
赫尔夫朗标签
0 hreflang tags
如果您有多语言内容，请添加 hreflang 标签。
✓
Robots.txt
Exists
找到 Robots.txt 文件。
✓
Sitemap
Declared in robots.txt
在 robots.txt 中声明的站点地图。
✓
HTTPS
Yes
已启用安全 HTTPS 连接。
✓
压缩
gzip
启用 Gzip 或 Zstd 压缩以加快加载速度。
!
缓存
Not set
添加缓存控制标头以提高回访者的加载速度。
✓
页面速度
1.24 ms
出色的加载速度。
页面搜索引擎优化
✓
标题
Home
-
www.caltech.edu
良好的标题长度（30-60 个字符）。
✓
元描述
The California Institute of Technology aims to expand human knowledge and benefit society through research integrated with education. Lenght:133
良好的元描述长度（100-160 个字符）。
✓
H1 标题
1 found - "Caltech Homepage"
好 - 找到单个 H1 标题。
✓
字数统计
729
内容长度良好（建议 500-2000 字）。
!
规范标签
添加规范标签以防止重复内容问题。
✓
重复元
[]
未找到重复的元标记。
✓
关键词
元关键字是可选的（主要搜索引擎不使用）。
内容和用户体验
✓
语言
en
语言属性设置正确。
!
图片
70 total, 19 missing ALT
将 ALT 文本添加到图像中以实现可访问性和 SEO。
✓
视口
width=device-width, initial-scale=1
为移动设备正确设置视口元标记。
✓
打开图
All OG tags present.
存在所有必要的 OpenGraph 标签。
!
结构化数据
0 JSON-LD scripts
添加结构化数据 (JSON-LD) 以获取丰富的代码片段和更好的 SEO。
职位于 Google
搜索短语 - Google
| 位置 | 短语 | 页 | 片段 |
|---|---|---|---|
| 7 | /about/news/checking... |