KOKEN-LTD.CO.JP クリーン、ヘルス、セーフティで社会に 興研株式会社

koken-ltd.co.jp Website Information

Daily Unique Visits: 1,340

Daily Page Views: 2,680

Income Per Day: $8

Estimated Value: $1,920

This website is located in Japan and is using following IP address 221.186.131.205. See the complete list of popular websites hosted in Japan.

koken-ltd.co.jp is registered under .JP top-level domain. Please check other sites in .JP zone.

Website koken-ltd.co.jp is using the following name servers:

  • ns.koken-ltd.co.jp
  • ns-tk023.ocn.ad.jp

and is probably hosted by OCN NTT Communications Corporation, JP. See the full list of other websites hosted by OCN NTT Communications Corporation, JP.

The highest website koken-ltd.co.jp position in Alexa rank database was 34075 and the lowest rank position was 996920. Current position of koken-ltd.co.jp in Alexa rank database is 535148.

Desktop speed score of koken-ltd.co.jp (74/100) is better than the results of 57.94% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of koken-ltd.co.jp (89/100) is better than the results of 31.01% of other sites and means that the page is mobile-friendly.

Mobile speed score of koken-ltd.co.jp (63/100) is better than the results of 61.76% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

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koken-ltd.co.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.


koken-ltd.co.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] KOKEN-LTD.CO.JP
e. [そしきめい] こうけんかぶしきがいしゃ
f. [組織名] 興研株式会社
g. [Organization] Koken Ltd.
k. [組織種別] 株式会社
l. [Organization Type] Corporation
m. [登録担当者] TN1296JP
n. [技術連絡担当者] YT1176JP
p. [ネームサーバ] ns.koken-ltd.co.jp
p. [ネームサーバ] ns-tk023.ocn.ad.jp
s. [署名鍵]
[状態] Connected (2022/09/30)
[登録年月日] 1998/09/17
[接続年月日] 1998/09/22
[最終更新] 2021/10/01 01:03:50 (JST)

koken-ltd.co.jp server information

Servers Location

koken-ltd.co.jp desktop page speed rank

Last tested: 2019-11-25


Desktop Speed Medium
74/100

koken-ltd.co.jp Desktop Speed Test Quick Summary


priority - 10Enable compression

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Enable compression for the following resources to reduce their transfer size by 101.3KiB (66% reduction).

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priority - 8Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 5 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

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http://www.koken-ltd.co.jp/common/js/jquery.cookie.js?date=20161209
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http://www.koken-ltd.co.jp/common/css/style.css?date=20161209
http://www.koken-ltd.co.jp/common/css/thickbox.css?date=20161209

priority - 7Optimize images

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priority - 7Leverage 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.

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http://www.koken-ltd.co.jp/images/top_gnav_btn01.png (expiration not specified)
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http://www.koken-ltd.co.jp/images/top_head_btn01.png (expiration not specified)
http://www.koken-ltd.co.jp/images/top_head_btn02.png (expiration not specified)
http://www.koken-ltd.co.jp/images/top_logo.png (expiration not specified)
http://www.koken-ltd.co.jp/images/top_main.jpg (expiration not specified)
http://www.google-analytics.com/analytics.js (2 hours)

priority - 1Minify JavaScript

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Minify JavaScript for the following resources to reduce their size by 9.9KiB (41% reduction).

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priority - 1Minify CSS

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Minify CSS for the following resources to reduce their size by 7.3KiB (23% reduction).

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priority - 0Minify HTML

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Minify HTML for the following resources to reduce their size by 419B (13% reduction).

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koken-ltd.co.jp Desktop Resource Breakdown

Total Resources28
Number of Hosts5
Static Resources14
JavaScript Resources6
CSS Resources4

koken-ltd.co.jp mobile page speed rank

Last tested: 2019-11-26


Mobile Speed Bad
63/100

koken-ltd.co.jp Mobile Speed Test Quick Summary


priority - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 5 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

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http://www.koken-ltd.co.jp/common/js/jquery.cookie.js?date=20161209
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http://www.koken-ltd.co.jp/common/css/base.css?date=20161209
http://www.koken-ltd.co.jp/common/css/style.css?date=20161209
http://www.koken-ltd.co.jp/common/css/thickbox.css?date=20161209

priority - 10Leverage 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.

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http://www.koken-ltd.co.jp/common/images/copyright.gif (expiration not specified)
http://www.koken-ltd.co.jp/common/images/foot_btn02.jpg (expiration not specified)
http://www.koken-ltd.co.jp/common/images/foot_btn03.jpg (expiration not specified)
http://www.koken-ltd.co.jp/common/images/loading.gif (expiration not specified)
http://www.koken-ltd.co.jp/images/top_gnav_btn01.png (expiration not specified)
http://www.koken-ltd.co.jp/images/top_gnav_btn02.png (expiration not specified)
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http://www.koken-ltd.co.jp/images/top_gnav_btn05.png (expiration not specified)
http://www.koken-ltd.co.jp/images/top_head_btn01.png (expiration not specified)
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http://www.koken-ltd.co.jp/images/top_logo.png (expiration not specified)
http://www.koken-ltd.co.jp/images/top_main.jpg (expiration not specified)
http://www.google-analytics.com/analytics.js (2 hours)

priority - 10Enable compression

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Compressing http://www.koken-ltd.co.jp/common/css/base.css?date=20161209 could save 12.8KiB (77% reduction).
Compressing http://www.koken-ltd.co.jp/common/js/thickbox.js?date=20161209 could save 8KiB (68% reduction).
Compressing http://www.koken-ltd.co.jp/common/css/style.css?date=20161209 could save 6.8KiB (73% reduction).
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Compressing http://www.koken-ltd.co.jp/ could save 2KiB (59% reduction).
Compressing http://www.koken-ltd.co.jp/common/css/reset.css?date=20161209 could save 1.2KiB (56% reduction).

priority - 7Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 68.8KiB (42% reduction).

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Compressing http://www.koken-ltd.co.jp/images/top_logo.png could save 7.5KiB (27% reduction).
Compressing http://www.koken-ltd.co.jp/images/top_gnav_btn02.png could save 1.7KiB (31% reduction).
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priority - 1Minify JavaScript

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priority - 1Minify CSS

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Minify CSS for the following resources to reduce their size by 7.3KiB (23% reduction).

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priority - 0Minify HTML

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Minify HTML for the following resources to reduce their size by 419B (13% reduction).

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koken-ltd.co.jp Mobile Resource Breakdown

Total Resources28
Number of Hosts5
Static Resources14
JavaScript Resources6
CSS Resources4

koken-ltd.co.jp mobile page usability

Last tested: 2019-11-26


Mobile Usability Good
89/100

koken-ltd.co.jp Mobile Usability Test Quick Summary


priority - 10Configure the viewport

Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.

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 <a href="/english/top.htm"></a> is close to 1 other tap targets.

koken-ltd.co.jp HTML validation

Warnings

The “charset” attribute on the “script” element is obsolete.

Line: 19 Column: 1 - 87
"...1209" /> <script src="common/js/jquery.js?date=20161209" type="text/javascript" charset="UTF-8"></scri..." Line: 20 Column: 1 - 94
"...</script> <script src="common/js/jquery.cookie.js?date=20161209" type="text/javascript" charset="UTF-8"></scri..." Line: 21 Column: 1 - 87
"...</script> <script src="common/js/common.js?date=20161209" type="text/javascript" charset="UTF-8"></scri..." Line: 22 Column: 1 - 89
"...</script> <script src="common/js/thickbox.js?date=20161209" type="text/javascript" charset="UTF-8"></scri..." Line: 23 Column: 1 - 94
"...</script> <script src="common/js/page-scroller.js?date=20161209" type="text/javascript" charset="UTF-8"></scri..."

The “type” attribute is unnecessary for JavaScript resources.

Line: 19 Column: 1 - 87
"...1209" /> <script src="common/js/jquery.js?date=20161209" type="text/javascript" charset="UTF-8"></scri..." Line: 20 Column: 1 - 94
"...</script> <script src="common/js/jquery.cookie.js?date=20161209" type="text/javascript" charset="UTF-8"></scri..." Line: 21 Column: 1 - 87
"...</script> <script src="common/js/common.js?date=20161209" type="text/javascript" charset="UTF-8"></scri..." Line: 22 Column: 1 - 89
"...</script> <script src="common/js/thickbox.js?date=20161209" type="text/javascript" charset="UTF-8"></scri..." Line: 23 Column: 1 - 94
"...</script> <script src="common/js/page-scroller.js?date=20161209" type="text/javascript" charset="UTF-8"></scri..."

Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.

Line: 6 Column: 16 - 43
"...TYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <hea..."

Errors

Heading cannot be a child of another heading.

Line: 41 Column: 92 - 95
"...ight="94"><h1> <div..."

Element “div” not allowed as child of element “h1” in this context. (Suppressing further errors from this subtree.)

Line: 43 Column: 1 - 19
"...94"><h1> <div id="top_wrap"> <nav..."

Element “footer” not allowed as child of element “h1” in this context. (Suppressing further errors from this subtree.)

Line: 59 Column: 1 - 8
"..._wrap--> <footer> <div..."

End tag “div” seen, but there were open elements.

Line: 69 Column: 1 - 6
"...oter --> </div><!-- /..."

Unclosed element “h1”.

Line: 41 Column: 92 - 95
"...ight="94"><h1> <div..."

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koken-ltd.co.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.


koken-ltd.co.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.