si.edu 網站分析
si.edu - 基本信息
si.edu - 頁面信息
標題:
Smithsonian Institution | HomeMeta 關鍵詞:
Smithsonian InstitutionMeta 描述信息:
Official website of the Smithsonian, the world's largest museum and research complex, with 21 museums, 9 research centers, and affiliates around the world.H1:
Smithsonian Institution內部鏈接:
148 (0 nofollow)外部鏈接:
32 (0 nofollow)si.edu - 建站技術
服務器:
BigIP
SSL 安全:
不可用robots.txt:
不可用XML 站點地圖:
不可用Gzip 壓縮:
有效favicon.ico:
不可用si.edu - 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si.edu 的HTTP header 信息:
HTTP/1.0 301 Moved Permanently
Location: https://www.si.edu/
Server: BigIP
Connection: Keep-Alive
Content-Length: 0
HTTP/1.1 200 OK
Date: Thu, 24 Aug 2023 02:23:26 GMT
X-Drupal-Cache: HIT
Content-Language: en
X-Frame-Options: SAMEORIGIN
Link: ; rel="image_src",; rel="canonical"
Cache-Control: public, max-age=3600
Expires: Sun, 19 Nov 1978 05:00:00 GMT
Vary: Cookie,Accept-Encoding
Content-Encoding: gzip
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
X-Content-Type-Options: nosniff
Upgrade: h2,h2c
Connection: close
Etag: "1692842465-1"
Last-Modified: Thu, 24 Aug 2023 02:01:05 GMT
Content-Security-Policy: upgrade-insecure-requests;
Content-Type: text/html; charset=utf-8
Location: https://www.si.edu/
Server: BigIP
Connection: Keep-Alive
Content-Length: 0
HTTP/1.1 200 OK
Date: Thu, 24 Aug 2023 02:23:26 GMT
X-Drupal-Cache: HIT
Content-Language: en
X-Frame-Options: SAMEORIGIN
Link: ; rel="image_src",; rel="canonical"
Cache-Control: public, max-age=3600
Expires: Sun, 19 Nov 1978 05:00:00 GMT
Vary: Cookie,Accept-Encoding
Content-Encoding: gzip
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
X-Content-Type-Options: nosniff
Upgrade: h2,h2c
Connection: close
Etag: "1692842465-1"
Last-Modified: Thu, 24 Aug 2023 02:01:05 GMT
Content-Security-Policy: upgrade-insecure-requests;
Content-Type: text/html; charset=utf-8
si.edu - 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。 si.edu 當前共有 8 項 DNS 記錄。
| 主機 | 類型 | IP/目標 | TTL | 擴充資訊 |
|---|---|---|---|---|
| si.edu | A | 86400 | ||
| si.edu | MX | 1800 | pri: 10 | |
| si.edu | MX | 1800 | pri: 10 | |
| si.edu | NS | 86400 | ||
| si.edu | NS | 86400 | ||
| si.edu | SOA | 86400 | expire: 604800 serial: 233277 | |
| si.edu | TXT | v=spf1 ip4:160.111.103.177 ip4:160.111.103.178 ip4:208.65.144.0/21 ip4:208.81.64.0/21 ip4:52.1.234.206 ip4:52.70.152.226 ip4:66.231.180.192/27 include:_spf.qualtrics.com include:cmail1.com ~all | 3600 | |
| si.edu | TXT | MS=ms11507808 | 3600 |