keio.ac.jp Website Information
Daily Unique Visits: 434,769
Daily Page Views: 3,478,152
Income Per Day: $3,478
Estimated Value: $3,756,240
This website is located in Japan and is using following IP address 131.113.131.113. See the complete list of popular websites hosted in Japan.
keio.ac.jp is registered under .JP top-level domain. Please check other sites in .JP zone.
Website keio.ac.jp is using the following name servers:
- a5-66.akam.net
- a26-67.akam.net
- a14-66.akam.net
- a1-123.akam.net
- a4-65.akam.net
- a3-64.akam.net
and is probably hosted by KEIO-NET Keio University, JP. See the full list of other websites hosted by KEIO-NET Keio University, JP.
The highest website keio.ac.jp position in Alexa rank database was 3458 and the lowest rank position was 3762. Current position of keio.ac.jp in Alexa rank database is 3505.
Desktop speed score of keio.ac.jp (25/100) is better than the results of 6.03% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of keio.ac.jp (99/100) is better than the results of 79.46% of other sites and means that the page is mobile-friendly.
Mobile speed score of keio.ac.jp (17/100) is better than the results of 3.39% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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keio.ac.jp Alexa Rank
The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.
keio.ac.jp whois
WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.
[ JPRS database provides information on network administration. Its use is ]
[ restricted to network administration purposes. For further information, ]
[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]
[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]
Domain Information: [ドメイン情報]
a. [ドメイン名] KEIO.AC.JP
e. [そしきめい] けいおうぎじゅくだいがく
f. [組織名] 慶應義塾大学
g. [Organization] Keio University
k. [組織種別] 大学
l. [Organization Type] University
m. [登録担当者] KY60982JP
n. [技術連絡担当者] TH985JP
n. [技術連絡担当者] TO13574JP
n. [技術連絡担当者] TY11794JP
p. [ネームサーバ] a1-123.akam.net
p. [ネームサーバ] a14-66.akam.net
p. [ネームサーバ] a26-67.akam.net
p. [ネームサーバ] a3-64.akam.net
p. [ネームサーバ] a4-65.akam.net
p. [ネームサーバ] a5-66.akam.net
s. [署名鍵]
[状態] Connected (2025/03/31)
[登録年月日]
[接続年月日] 2011/03/31
[最終更新] 2024/04/09 13:49:14 (JST)
[ restricted to network administration purposes. For further information, ]
[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]
[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]
Domain Information: [ドメイン情報]
a. [ドメイン名] KEIO.AC.JP
e. [そしきめい] けいおうぎじゅくだいがく
f. [組織名] 慶應義塾大学
g. [Organization] Keio University
k. [組織種別] 大学
l. [Organization Type] University
m. [登録担当者] KY60982JP
n. [技術連絡担当者] TH985JP
n. [技術連絡担当者] TO13574JP
n. [技術連絡担当者] TY11794JP
p. [ネームサーバ] a1-123.akam.net
p. [ネームサーバ] a14-66.akam.net
p. [ネームサーバ] a26-67.akam.net
p. [ネームサーバ] a3-64.akam.net
p. [ネームサーバ] a4-65.akam.net
p. [ネームサーバ] a5-66.akam.net
s. [署名鍵]
[状態] Connected (2025/03/31)
[登録年月日]
[接続年月日] 2011/03/31
[最終更新] 2024/04/09 13:49:14 (JST)
keio.ac.jp server information
Servers Location
keio.ac.jp desktop page speed rank
Last tested: 2019-12-04
Desktop Speed
Bad
25/100
keio.ac.jp Desktop Speed Test Quick Summary
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priority - 9Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
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https://www.keio.ac.jp/en/assets/common/images/icon/language_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/icon/linkedin_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/icon/search_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/icon/twitter_01.png (expiration not specified)
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priority - 8Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 7 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
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Optimize CSS Delivery of the following:
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priority - 3Avoid landing page redirects
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Avoid landing page redirects for the following chain of redirected URLs.
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priority - 0Minify CSS
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priority - 0Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 1KiB (13% reduction).
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priority - 0Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
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priority - 0Enable compression
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keio.ac.jp Desktop Resource Breakdown
| Total Resources | 84 |
| Number of Hosts | 13 |
| Static Resources | 69 |
| JavaScript Resources | 17 |
| CSS Resources | 8 |
keio.ac.jp mobile page speed rank
Last tested: 2019-12-05
Mobile Speed
Bad
17/100
keio.ac.jp Mobile Speed Test Quick Summary
priority - 339Optimize images
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priority - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 8 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
https://www.keio.ac.jp/en/assets/common/js/jquery-3.2.1.min.js
https://www.keio.ac.jp/en/assets/common/js/lib.js
https://www.keio.ac.jp/en/assets/common/js/initialize.js
https://www.keio.ac.jp/en/assets/common/js/lang.js
https://www.keio.ac.jp/en/assets/common/js/link.js
https://form.keio.ac.jp/cn/cn.cgi
https://www.keio.ac.jp/en/assets/js/index.js
https://www.google.com/coop/cse/brand?form=cse-search-box&lang=en
https://www.keio.ac.jp/en/assets/common/js/lib.js
https://www.keio.ac.jp/en/assets/common/js/initialize.js
https://www.keio.ac.jp/en/assets/common/js/lang.js
https://www.keio.ac.jp/en/assets/common/js/link.js
https://form.keio.ac.jp/cn/cn.cgi
https://www.keio.ac.jp/en/assets/js/index.js
https://www.google.com/coop/cse/brand?form=cse-search-box&lang=en
Optimize CSS Delivery of the following:
https://cloud.typography.com/6823094/7703952/css/fonts.css
https://www.keio.ac.jp/en/assets/common/css/base.css
https://www.keio.ac.jp/en/assets/common/css/module_common.css
https://www.keio.ac.jp/en/assets/common/css/module_layout.css
https://www.keio.ac.jp/en/assets/common/css/global.css
https://www.keio.ac.jp/en/assets/css/index.css
https://www.keio.ac.jp/en/assets/common/css/base.css
https://www.keio.ac.jp/en/assets/common/css/module_common.css
https://www.keio.ac.jp/en/assets/common/css/module_layout.css
https://www.keio.ac.jp/en/assets/common/css/global.css
https://www.keio.ac.jp/en/assets/css/index.css
priority - 13Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://form.keio.ac.jp/cn/cn.cgi (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/footer_title_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/footer_title_01_sp.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/icon/access_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/icon/facebook_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/icon/instagram_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/icon/language_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/icon/linkedin_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/icon/search_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/icon/twitter_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/icon/youtube_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/title_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/title_01_sp.png (expiration not specified)
https://www.keio.ac.jp/en/assets/images/index/main/title_01.png (expiration not specified)
https://www.keio.ac.jp/ja/assets/images/index/main/arrow_01.png (expiration not specified)
https://cse.google.com/coop/cse/brand?form=cse-search-box&lang=en (30 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
https://www.keio.ac.jp/en/assets/common/images/footer_title_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/footer_title_01_sp.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/icon/access_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/icon/facebook_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/icon/instagram_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/icon/language_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/icon/linkedin_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/icon/search_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/icon/twitter_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/icon/youtube_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/title_01.png (expiration not specified)
https://www.keio.ac.jp/en/assets/common/images/title_01_sp.png (expiration not specified)
https://www.keio.ac.jp/en/assets/images/index/main/title_01.png (expiration not specified)
https://www.keio.ac.jp/ja/assets/images/index/main/arrow_01.png (expiration not specified)
https://cse.google.com/coop/cse/brand?form=cse-search-box&lang=en (30 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
priority - 10Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://keio.ac.jp/
https://www.keio.ac.jp/
https://www.keio.ac.jp/en/
https://www.keio.ac.jp/
https://www.keio.ac.jp/en/
priority - 8Prioritize visible content
Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.
Only about 25% of the final above-the-fold content could be rendered with the full HTML response.
Click to see the screenshot with only the HTML response:
priority - 0Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 3KiB (17% reduction).
Minifying https://www.keio.ac.jp/en/assets/common/css/global.css could save 1.8KiB (18% reduction) after compression.
Minifying https://www.keio.ac.jp/en/assets/css/index.css could save 1,022B (17% reduction) after compression.
Minifying https://www.keio.ac.jp/en/assets/common/css/module_common.css could save 205B (11% reduction) after compression.
Minifying https://www.keio.ac.jp/en/assets/css/index.css could save 1,022B (17% reduction) after compression.
Minifying https://www.keio.ac.jp/en/assets/common/css/module_common.css could save 205B (11% reduction) after compression.
priority - 0Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 1KiB (13% reduction).
Minifying https://www.keio.ac.jp/en/ could save 1KiB (13% reduction) after compression.
priority - 0Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 1,006B (19% reduction).
Minifying https://www.keio.ac.jp/en/assets/js/index.js could save 1,006B (19% reduction) after compression.
keio.ac.jp Mobile Resource Breakdown
| Total Resources | 72 |
| Number of Hosts | 7 |
| Static Resources | 66 |
| JavaScript Resources | 9 |
| CSS Resources | 7 |
keio.ac.jp mobile page usability
Last tested: 2019-12-05
Mobile Usability
Good
99/100
keio.ac.jp Mobile Usability Test Quick Summary
priority - 0Size tap targets appropriately
Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.
The tap target
The tap target
<section id="secNews" class="module-hover">News…→More</section> and 1 others are close to other tap targets.The tap target
<a href="press-releases/">→Press Releases</a> is close to 1 other tap targets.keio.ac.jp HTML validation
Errors
Attribute “xmlns:og” not allowed here.
Line: 2 Column: 16 - 114
"...TYPE html> <html xmlns:og="http://ogp.me/ns#" xmlns:fb="http://ogp.me/ns/fb#" lang="en" class="device-view-pc device-js-off"> <head..."
"...TYPE html> <html xmlns:og="http://ogp.me/ns#" xmlns:fb="http://ogp.me/ns/fb#" lang="en" class="device-view-pc device-js-off"> <head..."
Attribute “xmlns:fb” not allowed here.
Line: 2 Column: 16 - 114
"...TYPE html> <html xmlns:og="http://ogp.me/ns#" xmlns:fb="http://ogp.me/ns/fb#" lang="en" class="device-view-pc device-js-off"> <head..."
"...TYPE html> <html xmlns:og="http://ogp.me/ns#" xmlns:fb="http://ogp.me/ns/fb#" lang="en" class="device-view-pc device-js-off"> <head..."
Warnings
Attribute with the local name “xmlns:og” is not serializable as XML 1.0.
Line: 2 Column: 16 - 114
"...TYPE html> <html xmlns:og="http://ogp.me/ns#" xmlns:fb="http://ogp.me/ns/fb#" lang="en" class="device-view-pc device-js-off"> <head..."
"...TYPE html> <html xmlns:og="http://ogp.me/ns#" xmlns:fb="http://ogp.me/ns/fb#" lang="en" class="device-view-pc device-js-off"> <head..."
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
Line: 2 Column: 16 - 114
"...TYPE html> <html xmlns:og="http://ogp.me/ns#" xmlns:fb="http://ogp.me/ns/fb#" lang="en" class="device-view-pc device-js-off"> <head..."
"...TYPE html> <html xmlns:og="http://ogp.me/ns#" xmlns:fb="http://ogp.me/ns/fb#" lang="en" class="device-view-pc device-js-off"> <head..."
Consider avoiding viewport values that prevent users from resizing documents.
Line: 9 Column: 5 - 124
"...dge"> <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1, minimum-scale=1, maximum-scale=1"> <..."
"...dge"> <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1, minimum-scale=1, maximum-scale=1"> <..."
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Line: 329 Column: 13 - 55
"... <section id="secNews" class="module-hover"> ..."
"... <section id="secNews" class="module-hover"> ..."
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keio.ac.jp Ping
Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.
keio.ac.jp TRACEROUTE
Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.