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Alc.co.jp 英語学習・TOEIC対策・英辞郎 on the WEB | アルク

英語・子供英語・日本語の通信講座や学習書、オンラインサービスを提供するアルクのウェブサイト。あなたのレベルや目的に合った語学学習教材がきっと見つかります。英辞郎 on the WEBやTOEICなどの無料コンテンツも充実。

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Online Status
Offline

Server IP address resolved: No
Http response code: None
Last Checked: 09/16/2019

Alc.co.jp receives about two hundred thousand unique visitors and three hundred thousand pageviews per day. The estimated value of alc.co.jp is four million USD. Each unique visitor makes about 1.54 pageviews on average.

Over the time alc.co.jp has been ranked as high as 940 in the world, while most of its traffic comes from Japan, where it reached as high as 149 position.

It’s good for alc.co.jp that their hosting company SECOMTRUST SECOM Trust Systems Co.,Ltd., JP server is also located in Japan, as that enables the majority of their visitors to benefit from a much faster page load time. See the list of other websites hosted by SECOMTRUST SECOM Trust Systems Co.,Ltd., JP.

Alc.co.jp is registered under .JP top-level domain. Check other websites in .JP zone.

At the time of the last check (July 04, 2019) alc.co.jp has an expired wildcard SSL certificate (expired on September 20, 2019).

According to Google Safe Browsing, Google Safe Search, Symantec and Web of Trust alc.co.jp is quite a safe domain.

Mobile-Friendly test indicates that alc.co.jp is well optimized for mobile and tablet devices, however website page loading time could be improved.

Global Rank
2,285
Average Load Time
1.50sec
Links In Count
2,276
Website Value
$4.0 M
Overview
Last Updated: 11/15/2019
Overall result - "alc.co.jp" is SAFE.
We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.
Norton Connect Safe
Last Updated: 01/12/2019
NCS "alc.co.jp" OK.

Norton ConnectSafe evaluates alc.co.jp for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search
Last Updated: 10/10/2016
GSS "alc.co.jp" OK.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing
Last Updated: 01/09/2019
Malware not found at "alc.co.jp".
"alc.co.jp" is not a phishing page.
"alc.co.jp" does not install unwanted software.
"alc.co.jp" does not contain harmfull applications.
Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.
Site Advisor
Last Updated: 01/09/2019
SA "alc.co.jp" OK.

McAfee assesses alc.co.jp for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze alc.co.jp for mature or inappropriate content, only security checks are evaluated.

Web of Trust
Last Updated: 01/09/2019
WOT "alc.co.jp" VERY GOOD.

The WOT calculates reputation of the alc.co.jp. This reputation system receives ratings from users and information from third-party sources, assesses the alc.co.jp for safety features and confirms, whether alc.co.jp is suitable for children.

SSL Information
Domain *.alc.co.jp
Issuer Organization Unknown
Issuer GlobalSign Organization Validation CA - SHA256 - G2
Algorithm RSA-SHA256
Valid form 07/25/2018
Expiration 09/20/2019
Signed Certificate is not self signed
Additional Domains *.alc.co.jp
alc.co.jp
Server Location
Tokyo
Tokyo
Japan
ASN Information

ASN ID: 10006
ASN Title: SECOMTRUST SECOM Trust Systems Co.,Ltd., JP

Last Update: 05/29/2019

% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS9216 - AS10239'

as-block: AS9216 - AS10239
descr: APNIC ASN block
remarks: These AS numbers are further assigned by APNIC
remarks: to APNIC members and end-users in the APNIC region
admin-c: HM20-AP
tech-c: HM20-AP
mnt-by: APNIC-HM
mnt-lower: APNIC-HM
last-modified: 2009-05-19T07:00:23Z
source: APNIC

role: APNIC Hostmaster
address: 6 Cordelia Street
address: South Brisbane
address: QLD 4101
country: AU
phone: +61 7 3858 3100
fax-no: +61 7 3858 3199
e-mail: helpdesk@apnic.net
admin-c: AMS11-AP
tech-c: AH256-AP
nic-hdl: HM20-AP
remarks: Administrator for APNIC
notify: hostmaster@apnic.net
mnt-by: MAINT-APNIC-AP
last-modified: 2013-10-23T04:06:51Z
source: APNIC

% Information related to 'AS9990 - AS10021'

as-block: AS9990 - AS10021
descr: JPNIC-2Byte-ASBLOCK-AP
descr: for assignment to JPNIC members
country: JP
admin-c: JNIC1-AP
tech-c: JNIC1-AP
remarks: Authoritative information regarding AS Number
remarks: assignments made from within this block can be
remarks: queried at whois.nic.ad.jp.
remarks: To only display English output,
remarks: add '/e' at the end of command,
remarks: e.g. 'whois -h whois.nic.ad.jp xxx/e'.
mnt-by: APNIC-HM
mnt-lower: MAINT-JPNIC
last-modified: 2017-06-12T03:54:30Z
source: APNIC

role: Japan Network Information Center
address: Urbannet-Kanda Bldg 4F
address: 3-6-2 Uchi-Kanda
address: Chiyoda-ku, Tokyo 101-0047,Japan
country: JP
phone: +81-3-5297-2311
fax-no: +81-3-5297-2312
e-mail: hostmaster@nic.ad.jp
admin-c: JI13-AP
tech-c: JE53-AP
nic-hdl: JNIC1-AP
mnt-by: MAINT-JPNIC
last-modified: 2012-08-28T07:58:02Z
source: APNIC

% Information related to 'AS10006'

aut-num: AS10006
as-name: SECOMTRUST
descr: SECOM Trust Systems Co.,Ltd.
import: from AS2519 100 accept ANY
import: from AS2516 100 accept ANY
export: to AS2519 announce AS10006
export: to AS2516 announce AS10006
country: JP
admin-c: RO589JP
tech-c: HS16624JP
tech-c: YI9175JP
last-modified: 2012-06-05T21:49:18Z
source: JPNIC

% This query was served by the APNIC Whois Service version 1.88.15-46 (WHOIS-US3)

HTML Metatags
Title
英語学習・TOEIC対策・英辞郎 on the WEB | アルク
The title has an optimal length. Search engines typically displays the first 50–70 characters of a title tag. If you keep your titles under 70 characters, our research suggests that you can expect about 90% of your titles to display properly.
Description
英語・子供英語・日本語の通信講座や学習書、オンラインサービスを提供するアルクのウェブサイト。あなたのレベルや目的に合った語学学習教材がきっと見つかります。英辞郎 on the WEBやTOEICなどの無料コンテンツも充実。
The description has optimal length. Keep in mind that the "optimal" length will vary depending on the situation, and your primary goal should be to provide value and drive clicks.
Encoding
UTF-8
You should always specify the encoding used for an HTML page. If you don't, you risk that characters in your content are incorrectly interpreted. This is not just an issue of human readability, increasingly machines need to understand your data too.
Language
ja Japanese
Identifying the language of your content allows you to automatically do a number of things, from changing the look and behavior of a page, to assisting search engines in extracting information. If part of the page uses text in a different language, you can add a language attribute with a different value to the element that surrounds that content.
Language Region
Not Found
Images
Attribute ALT
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Line 215, ...<img src="img/common/arrow-right.jpg" alt="">...
Line 294, ...<img src="https://ds.advg.jp/adpds_deliver/p/img?adpds_site=alcad...
Line 329, ...<img src="//ec.alc.co.jp/course/assets/2016/11/itemimg-thumb-auto...
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Line 378, ...<img src="https://ds.advg.jp/adpds_deliver/p/img?adpds_site=alcad...
Line 390, ...<img src="//www.alc.co.jp/assets/2014/11/banner-begginer-alc-thum...
Line 416, ...<img src="//cdn2.alc.co.jp/sa/img/top/bnr_top_saiyo_b.jpg">...
Line 418, ...<img src="//cdn2.alc.co.jp/sa/img/top/bnr_top_right_ejad_a.gif">...

6 items are hidden.
Full results are available for registered users only.
As a general rule, search engines do not interpret the content of image files. The text provided in the <img alt> attribute enables the site owner to provide relevant information to the search engine and to the end user.
H1-H6 Tags Information

For search engines, <H> tags helps understand the structure of the text on a page better. For users, headings are like anchors in a wall of text, navigating them through the page and making it easier to digest. The <h1> tag reinforces the core keyword(s) found in the <title>, <description>, and the <body>. We recommend that the <h1> tag includes keywords that reflect the contents of the page and that it is not longer than 150 characters in length, but don’t overuse the tags and the keywords in them. Keep it readable for users.

H1
The H1 tag is missing
Your H1 introduces the topic your page is all about, just as a title tells a reader what a book is all about. Add a header to the page by using a H1 tag and place it within the BODY of the page source.
H2
Line 326, ...<h2><img src="/img/common/snavttl-ranking.gif" width="298" height...
The H2s are akin to book chapters, describing the main topics you’ll cover in sections of the article.
H3
Subsequent headers, H3s to H6s, serve as additional sub-headings within each section, just as a book chapter may be split up by multiple sub-topics.
H4
H5
H6
Iframes Information
iFrame
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Line 692, ...<iframe src="//www.googletagmanager.com/ns.html?id=GTM-TVDR9W" he...
Line 702, ...<iframe src="//www.googletagmanager.com/ns.html?id=GTM-TKK8PX" he...
Since search engines consider the content in iframes to belong to another website, the best you can hope for is no effect on SEO. Iframes tend to neither help nor hurt your search engine ranking. For this reason, it’s best to refrain from using iframes on main pages that you want to rank high in search engine results. Instead, fill high-priority pages with useful, unique content and save iframes for other pages.
Code To Text Ratio
Code To Text Ratio
3.53 %
A good code to text ratio is anywhere from 25 to 70 percent. This percentage refers to the visible text ratio, as opposed to HTML elements, image tags and other non-visible information. This has become especially apparent since search engines, such as Google, released the Panda update which placed importance on content-driven sites.
Favicons

Favicons are the little piece of graphic that represents your brand on browser tabs, bookmark lists, search history, search ads and even search results. These files are placed in a file called favicon.ico and placed in the root directory of a website. There are no direct SEO effects of having favicons. However, there may be indirect benefits such as increased usability of site and bookmarks. It makes your website look more professional and help a users to remember your site while browsing through multiple URLs. If you want to get mentioned benefits you have to specify icons for different web browsers and sometimes even for different mobiles.

Default Favicon
Line 20, //www.alc.co.jp/favicon.ico
Line 21, //www.alc.co.jp/favicon.ico
default, favicon.ico
Backup icon for most desktop browsers (if no icon of the right size is found). Tag format <link rel="shortcut icon" href="path-to-16x16-icon.ico" type="image/x-icon" />
16x16 Optional Favicon
Standard icon for outdated browsers or small resolution hand held devices. Tag format <link rel="icon" type="image/png" sizes="16x16" href="path-to-16x16.png">
32x32 Optional Favicon
Standard for most desktop browsers. Tag format <link rel="icon" sizes="32x32" href="path-to-32x32.png">
96x96 Optional Favicon
Mostly used as GoogleTV icon. Tag format <link rel="icon" type="image/png" sizes="96x96" href="path-to-96x96.png">
Default Apple Icon
Backup icon for apple devices (if no icon of the right size is found). Preferrable size 60x60. Tag format <link rel="apple-touch-icon" sizes="72x72" href="path-to-small-icon.png">
180x180 Apple Icon
iPhone 6 plus icons. Tag format <link rel="apple-touch-icon" sizes="180x180" href="path-to-180x180.png">
152x152 Apple Icon
iPad, iPad mini icons. Tag format <link rel="apple-touch-icon" sizes="152x152" href="path-to-icon-152x152.png">
167x167 Apple Icon
iPad Pro icon. Tag format <link rel="apple-touch-icon" sizes="167x167" href="path-to-167x167.png">
Robots.txt Information

Robots.txt is a text file that website owners can create to tell search engine bots how to crawl and index pages on their site.

Robots File
Robots File Loaded successfully (/robots.txt)
You can have multiple lines of instructions to allow or disallow specific URLs and add multiple sitemaps. If you do not disallow a URL, then search engine bots assume that they are allowed to crawl it.
Disallow
3 record(s)
Other User-Agent
Not found
Default User-Agent
Not found
Sitemap

A sitemap is an XML file where is provided information about each URL: when it was last updated, how often it changes, and how important it is in relation to other URLs in the site. Search engines crawling bots read this file to more efficiently and intelligently crawl your site and to find URLs that may be isolated from rest of the site's content.

Default Sitemap
Sitemap File failed Loaded (/sitemap.xml)
Your site will benefit from having a sitemap.
WHOIS

[ 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] ALC.CO.JP
e. [そしきめい] かぶしきがいしゃ あるく
f. [組織名] 株式会社 アルク
g. [Organization] ALC PRESS INC.
k. [組織種別] 株式会社
l. [Organization Type] Corporation
m. [登録担当者] TK66678JP
n. [技術連絡担当者] TK66678JP
p. [ネームサーバ] ns3.scnet.ne.jp
p. [ネームサーバ] viola.scsc3.net
s. [署名鍵]
[状態] Connected (2020/06/30)
[登録年月日] 1995/06/05
[接続年月日] 1995/07/24
[最終更新] 2019/07/01 01:08:57 (JST)

DNS Records
HostA RecordTTL
alc.co.jp165.100.234.44600
HostMX RecordPriorityTTL
alc.co.jpALT3.ASPMX.L.GOOGLE.COM303600
alc.co.jpASPMX.L.GOOGLE.COM103600
alc.co.jpALT1.ASPMX.L.GOOGLE.COM203600
alc.co.jpALT2.ASPMX.L.GOOGLE.COM203600
alc.co.jpALT4.ASPMX.L.GOOGLE.COM303600
HostNS RecordTTL
alc.co.jpviola.scsc3.net600
alc.co.jpns3.scnet.ne.jp600
HostTXT RecordTTL
alc.co.jp_globalsign-domain-verification=rawm9IbP52XIEqjdm6IlWa-wKVA4sD_xfvCIzLy0Mo3600
alc.co.jpgoogle-site-verification=-_nYH7RHkN6ulWs-QEs_t4-s_qMcHE61fyJ1Xw5Jjis3600
alc.co.jpv=spf13600
alc.co.jpMS=ms590479963600

ns3.scnet.ne.jp
TTL: 600
Email address: hostmaster.scnet.ne.jp
Serial: 2019073010
Refresh: 10800
Retry: 3600
Expire: 604800
Minimum: 3600

Errors
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Warnings
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Your page has 7 blocking script resources and 13 blocking CSS resources. This causes a delay in rendering your page.
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Desktop Resource Breakdown
Total Resources245
Number of Hosts61
Static Resources108
JavaScript Resources72
CSS Resources16

Last tested: 05/21/2017

Mobile
Mobile Usability
99%
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.
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The tap target <a href="https://m.face…ins%2Fpage.php" class="_5pcq">5月19日 20:00</a> is close to 1 other tap targets.
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Mobile Speed
25%
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Leverage browser caching for the following cacheable resources:

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http://www.alc.co.jp/banner/bnr_first-alc.jpg (expiration not specified)
http://www.alc.co.jp/common/js/jquery.cookie.js (expiration not specified)
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http://www.alc.co.jp/css/sp/content.css (expiration not specified)
http://www.alc.co.jp/css/sp/jquery.bxslider.css (expiration not specified)
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http://www.alc.co.jp/css/sp/style_160519.css (expiration not specified)
http://www.alc.co.jp/diet0509.jpg (expiration not specified)
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http://www.alc.co.jp/img/sp/common/bg_h2title01.png (expiration not specified)
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http://www.alc.co.jp/img/sp/common/btn_mailmag.jpg (expiration not specified)
http://www.alc.co.jp/img/sp/common/btn_menu.gif (expiration not specified)
http://www.alc.co.jp/img/sp/common/btn_pc.jpg (expiration not specified)
http://www.alc.co.jp/img/sp/common/btn_regist.gif (expiration not specified)
http://www.alc.co.jp/img/sp/common/btn_shop.gif (expiration not specified)
http://www.alc.co.jp/img/sp/common/bx_loader.gif (expiration not specified)
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http://www.alc.co.jp/img/sp/common/f_link02.jpg (expiration not specified)
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http://www.alc.co.jp/img/sp/common/logo.jpg (expiration not specified)
http://www.alc.co.jp/img/sp/common/logo_jump.gif (expiration not specified)
http://www.alc.co.jp/js/adtag1409.js (expiration not specified)
http://www.alc.co.jp/js/sp/dict.js (expiration not specified)
http://www.alc.co.jp/js/sp/jquery.bxslider.js (expiration not specified)
http://www.alc.co.jp/js/sp/jquery.js (expiration not specified)
http://www.alc.co.jp/kubo0511.png (expiration not specified)
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http://www.alc.co.jp/upload/bnr_top_KCcp1705.jpg (expiration not specified)
http://www.alc.co.jp/upload/bnr_top_KidsSpring1704.jpg (expiration not specified)
http://www.alc.co.jp/upload/bnr_top_TOEICcp1705.jpg (expiration not specified)
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http://www.alc.co.jp/upload/bnr_top_newTOEIC900_1705.jpg (expiration not specified)
http://www.alc.co.jp/upload/ebc0515.jpg (expiration not specified)
http://www.alc.co.jp/upload/keinan0517.jpg (expiration not specified)
http://js.fout.jp/prefs.js (6.2 minutes)
http://s.yimg.jp/images/listing/tool/yads/uadf/yad…ps-1.5.0.js?2017052101 (8.7 minutes)
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http://cdn2.alc.co.jp/sa/img/img/common/kokunai-2.jpg (10 minutes)
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http://cdn2.alc.co.jp/sa/img/img/common/movie.jpg (10 minutes)
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http://cdn2.alc.co.jp/sa/img/img/common/toeic1202-2.jpg (10 minutes)
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http://cdn2.alc.co.jp/sa/img/top/btn_program-list_test.png (10 minutes)
http://www.googletagmanager.com/gtm.js?id=GTM-MJJWHQ (15 minutes)
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http://js.fout.jp/segmentation.js (18.3 minutes)
http://connect.facebook.net/ja_JP/sdk.js (20 minutes)
http://yads.c.yimg.jp/js/yads.js (30 minutes)
http://pagead2.googlesyndication.com/pagead/osd.js (60 minutes)
https://www.googletagservices.com/dcm/dcmads.js (60 minutes)
https://gum.criteo.com/sync?c=46&r=2&j=handleData (60 minutes)
http://www.google-analytics.com/analytics.js (2 hours)
http://cdn.taboola.com/libtrc/precisionmarketing-alc-branding-sc/tfa.js (4 hours)

Your page has 5 blocking script resources and 5 blocking CSS resources. This causes a delay in rendering your page.
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http://www.alc.co.jp/common/js/jquery.cookie.js
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Minifying http://www.alc.co.jp/common/js/jquery.cookie.js could save 1.3KiB (43% reduction).
Minifying http://ds.advg.jp/adpds_deliver/js/pjs.js could save 632B (20% reduction).
Minifying http://www.alc.co.jp/js/adtag1409.js could save 533B (51% reduction).

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 14.4KiB (29% reduction).

Minifying http://www.alc.co.jp// could save 13.8KiB (29% reduction).
Minifying https://s0.2mdn.net/5755167/1491227008645/a1617_SU…roEnglish_300x250.html could save 584B (30% reduction) after compression.

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 6.9KiB (25% reduction).

Minifying http://www.alc.co.jp/css/sp/style_160519.css could save 2.9KiB (30% reduction).
Minifying http://www.alc.co.jp/css/sp/content.css could save 2.2KiB (28% reduction).
Minifying http://www.alc.co.jp/css/sp/jquery.bxslider.css could save 1.1KiB (30% reduction).
Minifying http://www.alc.co.jp/css/sp/base.css could save 591B (11% reduction).

Mobile Resource Breakdown
Total Resources235
Number of Hosts60
Static Resources161
JavaScript Resources64
CSS Resources11
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