WWW.DEFENSE.GOV 網站分析

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基本信息

搜索引擎收錄信息

必應:
Google:

頁面信息

標題:
U.S. Department of Defense
長度: 26 字元; 最佳長度: 10 ~ 60 字元
Meta 描述信息:
The Department of Defense is America's largest government agency. Our mission is to provide the military forces needed to deter war and ensure our nation's security.
長度: 165 字元; 最佳長度: 50 ~ 160 字元

The length of your meta description seems to be outside the recommended range. Ideally, a META DESCRIPTION should be between 50 and 160 characters, including spaces.

A meta description tag serves as a concise and informative summary of a web page's content, aiming to engage and inform users about the page's topic.

Google relies on the actual content of the page to generate a snippet for search results, but it may also utilize the meta description for a more descriptive representation of the page.

Meta descriptions act as a compelling pitch to persuade users that the page aligns with their search intent. While there's no strict character limit, Google truncates the snippet in search results as necessary to fit the device's width.

Best practices for Meta Descriptions

  • Length: Maintain a description length of 50-160 characters to ensure optimal visibility in search results.
  • Uniqueness: Craft unique descriptions for each page on your website to differentiate their purposes and content.
  • Accuracy: Create descriptions that precisely depict the specific content and purpose of the page.
  • Keywords: Ensure that each web page has a unique meta description containing important keywords relevant to the page's content.
Meta 關鍵詞:
Defense, Defense Department, Department of Defense, DoD, DOD, Secretary, Deputy Secretary, Joint Chief, United States, Military, Government, Pentagon, Secretary of Defense, Deputy Secretary of Defense
長度: 200 字元; 最佳長度: 10 ~ 255 字元
H1標籤:
長度: 0 字元; 最佳長度: 10 ~ 255 字元

Your page does not include an H1 tag.

The H1 tag in HTML is the main headline users see first when a page loads. It conveys the page's topic, enticing visitors to read further. H1 tags are crucial for SEO, user experience, and accessibility. They distinguish the main title on a webpage, aiding search engines and users in understanding the content.

Here are best practices for H1 tags

  • Use H1 tags for page titles.
  • Limit to one H1 tag per page.
  • Keep H1 tags short and concise.
  • Structure headings hierarchically.
  • Include your main keyword.
  • Ensure H1 tags are engaging.

建站技術

服務器:
未知
SSL 安全:
有效
robots.txt:
不可用
XML 站點地圖:
不可用
Gzip 壓縮:
有效
favicon.ico:
不可用

HTTP Head 分析

HTTP 協議採用了請求與響​​應模型,通過HTTP Header 定義了HTTP 傳輸過程中的必要參數。瀏覽器(例如​​Internet Explorer, Google Chrome, Firefox 等)並不會顯示HTTP header 字段的內容,下面是網站www.defense.gov 的HTTP header 信息:
HTTP/1.1 200 OK
Cache-Control: no-cache,private
Pragma: no-cache
Content-Type: text/html; charset=utf-8
Expires: -1
X-UA-Compatible: IE=edge
pw_value: 3ce3af822980b849665e8c5400e1b45b
Access-Control-Allow-Origin: *
X-XSS-Protection: 1; mode=block
X-Frame-Options: SAMEORIGIN
X-Powered-By:
Server:
X-ASPNET-VERSION:
X-Content-Type-Options: nosniff
x-aspnetmvc-version:
Content-Encoding: gzip
Content-Length: 35644
Date: Thu, 13 Feb 2025 09:05:40 GMT
Connection: keep-alive
Vary: Accept-Encoding
Strict-Transport-Security: max-age=31536000

DNS 記錄分析

DNS 域名系統(Domain Name System,縮寫)是Internet 的一項基礎服務。它作為將域名和 IP 位址相互映射的一個分佈式數據庫,能夠使人更方便的訪問互聯網。 defense.gov 當前共有 15 項 DNS 記錄。
主機 類型 IP/目標 TTL 擴充資訊
defense.govA20
defense.govNS300
defense.govNS300
defense.govNS300
defense.govNS300
defense.govNS300
defense.govNS300
defense.govNS300
defense.govNS300
defense.govSOA300expire: 12096000
serial: 1556726346
defense.govTXT
237m4pp8wk4z3xj0khf0pfd51jpt9ykf
300
defense.govTXT
google-site-verification=6dXp_kwBjmZhtI9uU0HORAv6_LGaxSlnkyozKqpbg_w
300
defense.govTXT
v=spf1 mx ip4:52.222.29.245/32 include:_spf.google.com -all
300
defense.govAAAA
2600:1408:ec00:985::3a30
20
defense.govAAAA
2600:1408:ec00:98d::3a30
20