DL.ACM.ORG 网站分析
访问网站 dl.acm.org 时发生错误
我们在尝试访问网站 dl.acm.org 的以下 URL 地址时遇到错误:
- HTTP 403 http://dl.acm.org/
- HTTP 403 https://dl.acm.org/
HTTP 403 是一个 HTTP 状态码,表示禁止访问请求的资源。当服务器限制我们的机器人访问页面时,就会发生这种情况,通常是由于防火墙的存在。
以下内容展示了我们服务器在 2025-01-27 缓存的部分历史分析数据。由于我们的机器人无法访问此网站,数据可能不完整或已过时,仅供您参考。
基本信息
页面信息
标题:
ACM Digital Library
长度: 19 字符; 最佳长度: 10 ~ 60 字符
Meta 描述信息:
www.acm.org - The premier society in computing brings you the Computer Portal.
长度: 78 字符; 最佳长度: 50 ~ 160 字符
Meta 关键词:
computer,internet
长度: 17 字符; 最佳长度: 10 ~ 255 字符
H1标签:
长度: 0 字符; 最佳长度: 10 ~ 255 字符
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.
外部链接:
14 (0 nofollow)
内部链接:
18 (0 nofollow)
建站技术
服务器:
未知
SSL 安全:
有效
robots.txt:
不可用
XML 站点地图:
不可用
Gzip 压缩:
有效
favicon.ico:
不可用
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 dl.acm.org 的 HTTP header 信息:
HTTP/1.1 302 Found
Date: Sat, 30 May 2020 00:40:20 GMT
Content-Type: text/html; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
Set-Cookie: __cfduid=d841dc554acbc543d5df5eb26cca2fee01590799220; expires=Mon, 29-Jun-20 00:40:20 GMT; path=/; domain=.dl.acm.org; HttpOnly; SameSite=Lax; Secure
Location: https://dl.acm.org/?cookieSet=1
CF-Ray: 59b46738fda30ce9-EWR
Cache-Control: private
Set-Cookie: JSESSIONID=6edd4a67-4119-4c6b-bd7a-13a655659090; domain=.dl.acm.org; path=/; secure; HttpOnly
Strict-Transport-Security: max-age=15552000
CF-Cache-Status: DYNAMIC
cf-request-id: 03049ed79d00000ce91f821200000001
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
P3P: CP="NOI DSP ADM OUR IND OTC"
Set-Cookie: SERVER=WZ6myaEXBLFWaYWZQ2cm9g==; domain=.dl.acm.org; path=/; secure
Set-Cookie: MAID=kgnh/6Pp+AFmFbphRCRS1Q==; domain=.dl.acm.org; path=/; secure; expires=Fri, 26-Mar-2021 00:40:20 GMT
Set-Cookie: MACHINE_LAST_SEEN=2020-05-29T17%3A40%3A20.718-07%3A00; domain=.dl.acm.org; path=/; secure; expires=Fri, 26-Mar-2021 00:40:20 GMT
Set-Cookie: I2KBRCK=1; domain=.dl.acm.org; path=/; secure; expires=Sun, 30-May-2021 00:40:20 GMT
Set-Cookie: JSESSIONID=6edd4a67-4119-4c6b-bd7a-13a655659090; domain=.dl.acm.org; path=/; secure; HttpOnly
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block
Vary: Accept-Encoding
Server: cloudflare
alt-svc: h3-27=":443"; ma=86400
HTTP/1.1 302 Found
Date: Sat, 30 May 2020 00:40:20 GMT
Content-Type: text/html; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
Set-Cookie: __cfduid=dd86e6eb5f1d01514ea7eca56aec543d01590799220; expires=Mon, 29-Jun-20 00:40:20 GMT; path=/; domain=.dl.acm.org; HttpOnly; SameSite=Lax; Secure
Location: https://dl.acm.org/action/cookieAbsent
CF-Ray: 59b46739f8a60ce9-EWR
Cache-Control: private
Set-Cookie: JSESSIONID=08b954a0-911f-4d4f-b0f4-023728790b18; domain=.dl.acm.org; path=/; secure; HttpOnly
Strict-Transport-Security: max-age=15552000
CF-Cache-Status: DYNAMIC
cf-request-id: 03049ed83900000ce91f82c200000001
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
P3P: CP="NOI DSP ADM OUR IND OTC"
Set-Cookie: SERVER=WZ6myaEXBLHieil4TSa9ig==; domain=.dl.acm.org; path=/; secure
Set-Cookie: MAID=kgnh/6Pp+AFrnJqF+2cRIQ==; domain=.dl.acm.org; path=/; secure; expires=Fri, 26-Mar-2021 00:40:20 GMT
Set-Cookie: MACHINE_LAST_SEEN=2020-05-29T17%3A40%3A20.855-07%3A00; domain=.dl.acm.org; path=/; secure; expires=Fri, 26-Mar-2021 00:40:20 GMT
Set-Cookie: JSESSIONID=08b954a0-911f-4d4f-b0f4-023728790b18; domain=.dl.acm.org; path=/; secure; HttpOnly
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block
Vary: Accept-Encoding
Server: cloudflare
alt-svc: h3-27=":443"; ma=86400
HTTP/1.1 200 OK
Date: Sat, 30 May 2020 00:40:20 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
Set-Cookie: __cfduid=df8d7103e05ad3bd53e97f1bd4abe99bc1590799220; expires=Mon, 29-Jun-20 00:40:20 GMT; path=/; domain=.dl.acm.org; HttpOnly; SameSite=Lax; Secure
CF-Ray: 59b4673adb1c0ce9-EWR
Age: 76247
Cache-Control: public, max-age=86400
Expires: Sun, 31 May 2020 00:40:20 GMT
Strict-Transport-Security: max-age=15552000
Vary: Accept-Encoding
CF-Cache-Status: HIT
cf-request-id: 03049ed8c700000ce91f839200000001
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
Pragma: no-cache
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-Webstats-RespID: 62c78e6ffccef8d89cceb6e5e3dd54f1
X-XSS-Protection: 1; mode=block
Server: cloudflare
Content-Encoding: gzip
alt-svc: h3-27=":443"; ma=86400
Date: Sat, 30 May 2020 00:40:20 GMT
Content-Type: text/html; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
Set-Cookie: __cfduid=d841dc554acbc543d5df5eb26cca2fee01590799220; expires=Mon, 29-Jun-20 00:40:20 GMT; path=/; domain=.dl.acm.org; HttpOnly; SameSite=Lax; Secure
Location: https://dl.acm.org/?cookieSet=1
CF-Ray: 59b46738fda30ce9-EWR
Cache-Control: private
Set-Cookie: JSESSIONID=6edd4a67-4119-4c6b-bd7a-13a655659090; domain=.dl.acm.org; path=/; secure; HttpOnly
Strict-Transport-Security: max-age=15552000
CF-Cache-Status: DYNAMIC
cf-request-id: 03049ed79d00000ce91f821200000001
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
P3P: CP="NOI DSP ADM OUR IND OTC"
Set-Cookie: SERVER=WZ6myaEXBLFWaYWZQ2cm9g==; domain=.dl.acm.org; path=/; secure
Set-Cookie: MAID=kgnh/6Pp+AFmFbphRCRS1Q==; domain=.dl.acm.org; path=/; secure; expires=Fri, 26-Mar-2021 00:40:20 GMT
Set-Cookie: MACHINE_LAST_SEEN=2020-05-29T17%3A40%3A20.718-07%3A00; domain=.dl.acm.org; path=/; secure; expires=Fri, 26-Mar-2021 00:40:20 GMT
Set-Cookie: I2KBRCK=1; domain=.dl.acm.org; path=/; secure; expires=Sun, 30-May-2021 00:40:20 GMT
Set-Cookie: JSESSIONID=6edd4a67-4119-4c6b-bd7a-13a655659090; domain=.dl.acm.org; path=/; secure; HttpOnly
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block
Vary: Accept-Encoding
Server: cloudflare
alt-svc: h3-27=":443"; ma=86400
HTTP/1.1 302 Found
Date: Sat, 30 May 2020 00:40:20 GMT
Content-Type: text/html; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
Set-Cookie: __cfduid=dd86e6eb5f1d01514ea7eca56aec543d01590799220; expires=Mon, 29-Jun-20 00:40:20 GMT; path=/; domain=.dl.acm.org; HttpOnly; SameSite=Lax; Secure
Location: https://dl.acm.org/action/cookieAbsent
CF-Ray: 59b46739f8a60ce9-EWR
Cache-Control: private
Set-Cookie: JSESSIONID=08b954a0-911f-4d4f-b0f4-023728790b18; domain=.dl.acm.org; path=/; secure; HttpOnly
Strict-Transport-Security: max-age=15552000
CF-Cache-Status: DYNAMIC
cf-request-id: 03049ed83900000ce91f82c200000001
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
P3P: CP="NOI DSP ADM OUR IND OTC"
Set-Cookie: SERVER=WZ6myaEXBLHieil4TSa9ig==; domain=.dl.acm.org; path=/; secure
Set-Cookie: MAID=kgnh/6Pp+AFrnJqF+2cRIQ==; domain=.dl.acm.org; path=/; secure; expires=Fri, 26-Mar-2021 00:40:20 GMT
Set-Cookie: MACHINE_LAST_SEEN=2020-05-29T17%3A40%3A20.855-07%3A00; domain=.dl.acm.org; path=/; secure; expires=Fri, 26-Mar-2021 00:40:20 GMT
Set-Cookie: JSESSIONID=08b954a0-911f-4d4f-b0f4-023728790b18; domain=.dl.acm.org; path=/; secure; HttpOnly
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block
Vary: Accept-Encoding
Server: cloudflare
alt-svc: h3-27=":443"; ma=86400
HTTP/1.1 200 OK
Date: Sat, 30 May 2020 00:40:20 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
Set-Cookie: __cfduid=df8d7103e05ad3bd53e97f1bd4abe99bc1590799220; expires=Mon, 29-Jun-20 00:40:20 GMT; path=/; domain=.dl.acm.org; HttpOnly; SameSite=Lax; Secure
CF-Ray: 59b4673adb1c0ce9-EWR
Age: 76247
Cache-Control: public, max-age=86400
Expires: Sun, 31 May 2020 00:40:20 GMT
Strict-Transport-Security: max-age=15552000
Vary: Accept-Encoding
CF-Cache-Status: HIT
cf-request-id: 03049ed8c700000ce91f839200000001
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
Pragma: no-cache
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-Webstats-RespID: 62c78e6ffccef8d89cceb6e5e3dd54f1
X-XSS-Protection: 1; mode=block
Server: cloudflare
Content-Encoding: gzip
alt-svc: h3-27=":443"; ma=86400
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。acm.org 当前共有 16 项 DNS 记录。
主机 | 类型 | IP/目标 | 生存时间 | 扩充信息 |
---|---|---|---|---|
acm.org | A | 300 | ||
acm.org | A | 300 | ||
acm.org | NS | 21600 | ||
acm.org | NS | 21600 | ||
acm.org | SOA | 1800 | expire: 604800 serial: 2362083439 | |
acm.org | MX | 20494 | pri: 10 | |
acm.org | TXT | MS=F1C3025E76F2E7036C9EAF6DBC2DF0C8D2D4AA87 | 300 | |
acm.org | TXT | p0yygcm8ljrr9v47xkgrk4cjdvpctb6t | 300 | |
acm.org | TXT | google-site-verification=lqxyh1_UaHYvgAfZ3gvxIDJi3quBVO_5Lq_pDUOKdNw | 300 | |
acm.org | TXT | abuseipdb-verification=D4c0J6WF | 300 | |
acm.org | TXT | google-site-verification=8gUY1AtsZ3BzLVSHLSv3wXIE8MpnWrGgVrmvVxM1MjE | 300 | |
acm.org | TXT | proxy-ssl.webflow.com | 300 | |
acm.org | TXT | 3w6lthcz5h4qpgtd8n8szx1m474v73tz | 300 | |
acm.org | TXT | v=spf1 include:_spf.acm_org._d.easydmarc.pro ~all | 300 | |
acm.org | TXT | duo_sso_verification=oFRYT7Y1MADnakU5K1wxwe47F9TsTRZ76IZL8bgH2J0NFoipvgi5tAE6kTmlRfY8 | 300 | |
acm.org | TXT | 83zn0ndgz9jvwx563vp9qbyz38hqb7kl | 300 |