ATMARKIT.CO.JP ITエキスパートのための問題解決メディア - @IT


atmarkit.co.jp website information.

atmarkit.co.jp website servers are located in Japan and are responding from following IP address 13.112.221.17. Check the full list of most visited websites located in Japan.

atmarkit.co.jp domain name is registered by .JP top-level domain registry. See the other sites registred in .JP domain zone.

Following name servers are specified for atmarkit.co.jp domain:

  • ns-1481.awsdns-57.org
  • ns-1657.awsdns-15.co.uk
  • ns-270.awsdns-33.com
  • ns-708.awsdns-24.net

and probably website atmarkit.co.jp is hosted by awsdns-57.org web hosting company. Check the complete list of other most popular websites hosted by awsdns-57.org hosting company.

According to Alexa traffic rank the highest website atmarkit.co.jp position was 1415 (in the world). The lowest Alexa rank position was 31623. Now website atmarkit.co.jp ranked in Alexa database as number 3498 (in the world).

Website atmarkit.co.jp Desktop speed measurement score (65/100) is better than the results of 42.38% of other sites shows that the page desktop performance can be improved.

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

Mobile speed measurement score of atmarkit.co.jp (59/100) is better than the results of 52.08% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

Weekly Rank Report

DateRankChange
Oct-19-2019 3,498902
Oct-18-2019 4,400-1,238
Oct-17-2019 3,1621,344
Oct-16-2019 4,5066,474
Oct-15-2019 10,980-2,263
Oct-14-2019 8,717-4,543
Oct-13-2019 4,174-249

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atmarkit.co.jp Rank History

Alexa can identify the popularity of a website as well as its competitors. It is important for website owners and bloggers to know their Alexa ranking because it shows how many visitors have viewed their web page. It gives them a clear idea of how popular their website is on the internet and the ranking of their competitors.


atmarkit.co.jp whois

WHOIS is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system, but is also used for a wider range of other information.


[ 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:
a. [Domain Name] ATMARKIT.CO.JP
g. [Organization] Netvision Co., Ltd.
l. [Organization Type] limited private company
m. [Administrative Contact] TO12884JP
n. [Technical Contact] MA11133JP
p. [Name Server] ns-270.awsdns-33.com
p. [Name Server] ns-1657.awsdns-15.co.uk
p. [Name Server] ns-1481.awsdns-57.org
p. [Name Server] ns-708.awsdns-24.net
s. [Signing Key]
[State] Connected (2015/07/31)
[Registered Date] 2005/07/21
[Connected Date] 2005/07/21
[Last Update] 2014/12/08 13:31:42 (JST)

[ 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'. ]

Contact Information:
a. [JPNIC Handle] TO12884JP
c. [Last, First] Otsuki, Toshiki
d. [E-Mail] jpnic@itmedia.co.jp
g. [Organization] Netvision Co., Ltd.
l. [Division]
n. [Title] President
o. [TEL]
p. [FAX]
y. [Reply Mail]
[Last Update] 2010/07/01 14:06:01 (JST)
form@dom.jprs.jp

[ 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'. ]

Contact Information:
a. [JPNIC Handle] MA11133JP
c. [Last, First] Asano, Masanori
d. [E-Mail] jpnic@itmedia.co.jp
g. [Organization] ITmedia Inc.
l. [Division]
n. [Title]
o. [TEL] 03-6824-9389
p. [FAX] 03-5413-0891
y. [Reply Mail]
[Last Update] 2012/12/03 19:20:59 (JST)
form@dom.jprs.jp

atmarkit.co.jp server information

Servers Location

atmarkit.co.jp desktop page speed rank

Last tested: 2016-06-13


Desktop Speed Medium
65/100

atmarkit.co.jp Desktop Speed Test Quick Summary


priority - 27 Leverage 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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http://img.itmedia.jp/so/images/sa/b/286/293735/300784868/300x50b.jpg (expiration not specified)
http://www.atmarkit.co.jp/include/sc/s_code.js (expiration not specified)
http://connect.facebook.net/en_US/fbevents.js (20 minutes)
http://connect.facebook.net/ja_JP/sdk.js (20 minutes)
http://www.atmarkit.co.jp/include/series/3328/list_10.json (30 minutes)
http://www.atmarkit.co.jp/js/ad.js (30 minutes)
http://www.atmarkit.co.jp/js/adRequest.js (30 minutes)
http://www.atmarkit.co.jp/js/ait/ad.js (30 minutes)
http://www.atmarkit.co.jp/js/ait/base.js (30 minutes)
http://www.atmarkit.co.jp/js/ait/ex_adRequest.js (30 minutes)
http://www.atmarkit.co.jp/js/ait/top.js (30 minutes)
http://www.atmarkit.co.jp/js/base.js (30 minutes)
http://www.atmarkit.co.jp/js/itmid/smartPhoneHeadLink.js (30 minutes)
http://www.atmarkit.co.jp/js/lib/prettify.js (30 minutes)
http://www.atmarkit.co.jp/js/masterBodyEnd.js (30 minutes)
http://www.atmarkit.co.jp/js/scAccount.js (30 minutes)
http://www.atmarkit.co.jp/js/scRequest.js (30 minutes)
http://www.atmarkit.co.jp/js/spv/movePC2SP.js (30 minutes)
http://www.atmarkit.co.jp/js/top.js (30 minutes)
http://www.atmarkit.co.jp/json/ait/rss_reborn_top_ranking_day.json (30 minutes)
http://www.atmarkit.co.jp/json/ait/rss_reborn_top_ranking_month.json (30 minutes)
http://cdn.cxense.com/cx.js (60 minutes)
http://cse.google.com/adsense/search/async-ads.js (60 minutes)
http://www.google.com/jsapi (60 minutes)
http://www.google.com/uds/?file=search&v=1&hl=ja&s…ook%2Fv2%2Fdefault.css (60 minutes)
http://c.nakanohito.jp/b3/bi.js (3 hours)

priority - 13 Optimize images

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

Optimize the following images to reduce their size by 120.2KiB (40% reduction).

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

Your page has 29 blocking script resources and 9 blocking CSS resources. This causes a delay in rendering your page.

None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.

Remove render-blocking JavaScript:

http://dlv.itmedia.jp/adsv/v1?posall=T&fp=root%2FI…t=js&rnd=1465790969005
http://www.atmarkit.co.jp/js/spv/movePC2SP.js
http://www.atmarkit.co.jp/js/lib/prettify.js
http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js
http://fc.itmedia.co.jp/fpcookie?site_id=itm_
http://www.atmarkit.co.jp/js/scAccount.js
http://www.atmarkit.co.jp/js/adRequest.js
http://www.atmarkit.co.jp/js/scRequest.js
http://cdn.cxense.com/cx.js
http://www.atmarkit.co.jp/js/ait/ex_adRequest.js
http://www.atmarkit.co.jp/js/base.js
http://www.atmarkit.co.jp/js/ad.js
http://www.atmarkit.co.jp/js/top.js
http://www.atmarkit.co.jp/js/ait/base.js
http://www.atmarkit.co.jp/js/ait/ad.js
http://www.atmarkit.co.jp/js/ait/top.js
http://cx.api.itmedia.co.jp/v1.js
http://dlv.itmedia.jp/adsv/v1?posall=ITWS&oe=shift…ndtg=&x-cxsegids=&t=js
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http://www.google.com/jsapi
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http://www.google.com/uds/api/search/1.0/8bdfc7978…55872c/default+ja.I.js
http://dlv.itmedia.jp/adsv/v1?posall=ITN&oe=shift_…ndtg=&x-cxsegids=&t=js
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http://dlv.itmedia.jp/adsv/v1?posall=ITT3&oe=shift…ndtg=&x-cxsegids=&t=js

Optimize CSS Delivery of the following:

http://www.itmedia.co.jp/css/ait/base.css
http://www.itmedia.co.jp/css/base.css
http://www.itmedia.co.jp/css/ait/ad.css
http://www.itmedia.co.jp/css/ad.css
http://www.itmedia.co.jp/css/ait/top.css
http://www.itmedia.co.jp/css/top.css
http://www.itmedia.co.jp/js/lib/prettify.css
http://www.google.com/uds/api/search/1.0/8bdfc7978…255872c/default+ja.css
http://www.google.com/cse/style/look/v2/default.css

priority - 5 Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 48.7KiB (68% reduction).

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priority - 2 Minify 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 24.2KiB (37% reduction).

Minifying http://www.atmarkit.co.jp/js/lib/prettify.js could save 9.3KiB (54% reduction) after compression.
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priority - 1 Minify 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 5.3KiB (26% reduction).

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atmarkit.co.jp Desktop Resources

Total Resources199
Number of Hosts34
Static Resources149
JavaScript Resources59
CSS Resources13

atmarkit.co.jp Desktop Resource Breakdown

atmarkit.co.jp mobile page speed rank

Last tested: 2016-06-13


Mobile Speed Bad
59/100

atmarkit.co.jp Mobile Speed Test Quick Summary


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

Your page has 18 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.

None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.

Remove render-blocking JavaScript:

http://dlv.itmedia.jp/adsv/v1?posall=T&fp=root%2Fs…t=js&rnd=1465790957194
http://www.atmarkit.co.jp/js/spv/movePC2SP.js
http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js
http://fc.itmedia.co.jp/fpcookie?site_id=itm_
http://www.atmarkit.co.jp/js/spv/html5base.js
http://www.atmarkit.co.jp/js/ad.js
http://www.atmarkit.co.jp/js/dlvRequest.js
http://www.atmarkit.co.jp/js/spv/scRequest.js
http://dlv.itmedia.jp/adsv/v1?posall=WELCOME&oe=sh…465790957199&ref=&t=js
http://www.atmarkit.co.jp/include/spv/parts_scrollNavigation_ait.js
http://dlv.itmedia.jp/adsv/v1?posall=CBOX&oe=shift…465790957199&ref=&t=js
http://dlv.itmedia.jp/adsv/v1?posall=TOPLINK&oe=sh…465790957199&ref=&t=js
http://dlv.itmedia.jp/adsv/v1?posall=RECTANGL&oe=s…465790957199&ref=&t=js
http://dlv.itmedia.jp/adsv/v1?posall=10FEATURES&oe…465790957199&ref=&t=js
http://www.atmarkit.co.jp/json/ait/careerhack.en-japan.json
http://dlv.itmedia.jp/adsv/v1?posall=RECTNGL2&oe=s…465790957199&ref=&t=js
http://dlv.itmedia.jp/adsv/v1?posall=N&oe=shift_ji…465790957199&ref=&t=js
http://www.atmarkit.co.jp/include/sc/s_code.js

Optimize CSS Delivery of the following:

http://www.itmedia.co.jp/css/spv/html5base_v2.css
http://www.itmedia.co.jp/css/spv/cmsInput_v2.css

priority - 14 Leverage 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:

http://img.itmedia.jp/so/images/sa/b/286/293730/30…x60_cloud_151023_2.jpg (expiration not specified)
http://img.itmedia.jp/so/images/sa/b/286/293733/300782954/dell_80x60_2.jpg (expiration not specified)
http://img.itmedia.jp/so/images/sa/b/286/293733/300783042/80.jpg (expiration not specified)
http://img.itmedia.jp/so/images/sa/b/286/293734/300783980/80x60.jpg (expiration not specified)
http://img.itmedia.jp/so/images/sa/b/286/293734/300784394/80x60.jpg (expiration not specified)
http://www.atmarkit.co.jp/include/sc/s_code.js (expiration not specified)
http://connect.facebook.net/en_US/fbevents.js (20 minutes)
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priority - 10 Avoid 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.

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priority - 8 Prioritize 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 47% of the final above-the-fold content could be rendered with the full HTML response.

priority - 4 Optimize images

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priority - 3 Enable compression

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priority - 1 Minify JavaScript

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priority - 0 Minify HTML

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Minify HTML for the following resources to reduce their size by 3.7KiB (22% reduction).

Minifying http://www.atmarkit.co.jp/ait/spv/ could save 2.9KiB (25% reduction) after compression.
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priority - 0 Minify CSS

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atmarkit.co.jp Mobile Resources

Total Resources114
Number of Hosts22
Static Resources87
JavaScript Resources31
CSS Resources3

atmarkit.co.jp Mobile Resource Breakdown

atmarkit.co.jp mobile page usability

Last tested: 2016-06-13


Mobile Usability Good
100/100

atmarkit.co.jp Mobile Resources

Total Resources114
Number of Hosts22
Static Resources87
JavaScript Resources31
CSS Resources3

atmarkit.co.jp Mobile Resource Breakdown

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atmarkit.co.jp Ping

Ping is a networking utility tool to test if a particular host is reachable. It is a diagnostic that checks reachability of a host on an Internet Protocol (IP) network. In a computer network, a ping test is a way of sending messages from one host to another. Aside from checking if the host is connected to a network, ping also gives indicators of the reliability and general speed of the connection.


atmarkit.co.jp TRACEROUTE

Traceroute is a network diagnostic tool used to track the pathway taken by a packet on an IP network from source to destination. Traceroute also records the time taken for each hop the packet makes during its route to the destination. Traceroute uses ICMP (Internet Control Message Protocol) echo packets with variable time to live values. The response time of each hop is calculated. To guarantee accuracy, each hop is queried multiple times (usually three times) to better measure the response of that particular hop.