mdn.co.jp ▷ MdN｜デザインとクリエイティブを深掘りするWebメディア

Quick Summary

Online Status

Online

Server IP address resolved: Yes
Http response code: 200
Response time: 1.01 sec.
Last Checked: 08/16/2025

Mdn.co.jp traffic volume is 5,705 unique daily visitors and their 7,987 pageviews. The web value rate of mdn.co.jp is 140,598 USD. Each visitor makes around 1.50 page views on average.

By Alexa's traffic estimates mdn.co.jp placed at 11,163 position over the world, while the largest amount of its visitors comes from Japan, where it takes 7,907 place.

Mdn.co.jp is hosted by ORACLE-BMC-31898 - Oracle Corporation, US in United States; however, we recommend migrating the server to Japan, as it will speed up mdn.co.jp page load time for the majority of users. See the list of other web pages hosted by ORACLE-BMC-31898 - Oracle Corporation, US.

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

The last verification results, performed on (July 10, 2025) mdn.co.jp show that mdn.co.jp has a valid and up-to-date wildcard SSL certificate issued by Cybertrust Japan Co., Ltd. expiring on June 30, 2026. Click “Refresh” button for SSL Information at the Safety Information section. Check the list of websites using SSL certificates issued by Cybertrust Japan Co., Ltd..

In accordance with Google Safe Browsing, Google Safe Search and Symantec mdn.co.jp is pretty a safe domain.

Relying Google MobileFriendly test mdn.co.jp is well optimized for mobile and tablet devices.

Mdn.co.jp General Information

Global Rank

92,198

Average Load Time

5.16sec

Links In Count

1,118

Website Value

$131,400

Audience Geography. Where are mdn.co.jp visitors located?

Country	Visitors
Japan JP	97.1%
Other	2.9%

Country	Pageviews
Japan JP	97.9%
Other	2.1%

Country	Rank
Japan JP	7907

Where do visitors go on mdn.co.jp?

Subdomain	Pageviews
mdn.co.jp	84.05%
books.mdn.co.jp	15.95%

Subdomain	Pageviews per User
mdn.co.jp	1.6
books.mdn.co.jp	1

Subdomain	Reach
mdn.co.jp	79.01%
books.mdn.co.jp	20.99%

How popular is mdn.co.jp?

Period	Global Rank	Global Rank Delta
past 3 months	92198	-7389
past month	97272	-7249
past week	181158	116011
yesterday	162188	-1650936

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	142393	-10727	35	10%	1.4	2%
30	145249	-27906	34	30%	1.5	20%
7	275051	169088	2	-69.885%	1	5%
1	287452	-1535209	2	20000%	1	0%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	77124	-5990	91	9%
30	83995	-113	84	3%
7	160244	105504	4	-71.469%
1	135334	-1657739	7	20000%

Mdn.co.jp Safety Information

Overview

Last Updated: 08/16/2025

Overall result - mdn.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: 03/21/2025

mdn.co.jp is safe.

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

Google Safe Search

Last Updated: 10/16/2016

mdn.co.jp is safe.

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

mdn.co.jp is safe.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.

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: 02/22/2021

mdn.co.jp is safe.

McAfee assesses mdn.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 mdn.co.jp for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 08/16/2025

mdn.co.jp child safety is unknown.

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

SSL Information

SSL Checker Tool

Domain	*.mdn.co.jp
Issuer Organization	Cybertrust Japan Co., Ltd.
Issuer	Cybertrust Japan SureServer CA G4
Algorithm	RSA-SHA256
Valid form	06/02/2025
Expiration	06/30/2026
Signed	Certificate is not self signed
Additional Domains	*.mdn.co.jp mdn.co.jp

Mdn.co.jp Server Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 31898
ASN Title: ORACLE-BMC-31898 - Oracle Corporation, US

Last Update: 04/13/2025

ASN Whois

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

ASNumber: 31898
ASName: ORACLE-BMC-31898
ASHandle: AS31898
RegDate: 2011-03-21
Updated: 2017-05-18
Ref: https://rdap.arin.net/registry/autnum/31898

OrgName: Oracle Corporation
OrgId: ORACLE-4
Address: 500 Oracle Parkway
Address: Attn: Domain Administrator
City: Redwood Shores
StateProv: CA
PostalCode: 94065
Country: US
RegDate: 1988-04-28
Updated: 2017-01-28
Ref: https://rdap.arin.net/registry/entity/ORACLE-4

OrgTechHandle: ORACL1-ARIN
OrgTechName: ORACLE NIS
OrgTechPhone: +1-650-506-2220
OrgTechEmail: domain-contact_ww_grp@oracle.com
OrgTechRef: https://rdap.arin.net/registry/entity/ORACL1-ARIN

OrgAbuseHandle: NISAM-ARIN
OrgAbuseName: Network Information Systems Abuse Management
OrgAbusePhone: +1-650-506-2220
OrgAbuseEmail: network-contact_ww_grp@oracle.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/NISAM-ARIN

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

Mdn.co.jp Domain Name Information

WHOIS

WHOIS Lookup Tool

Domain 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] MDN.CO.JP
e. [そしきめい] かぶしきがいしゃえむでぃえぬこーぽれーしょん
f. [組織名] 株式会社エムディエヌコーポレーション
g. [Organization] MdN Corporation
k. [組織種別] 株式会社
l. [Organization Type] Corporation
m. [登録担当者] KA19182JP
n. [技術連絡担当者] KA19182JP
p. [ネームサーバ] ns-1413.awsdns-48.org
p. [ネームサーバ] ns-130.awsdns-16.com
p. [ネームサーバ] ns-1875.awsdns-42.co.uk
p. [ネームサーバ] ns-543.awsdns-03.net
s. [署名鍵]
[状態] Connected (2025/03/31)
[登録年月日] 1995/03/09
[接続年月日] 1995/04/24
[最終更新] 2024/04/01 01:03:28 (JST)

DNS Records

DNS Lookup Tool

Host	A Record	TTL
mdn.co.jp	172.104.66.66	300

Host	MX Record	Priority	TTL
mdn.co.jp	aspmx.l.google.com	1	300
mdn.co.jp	alt3.aspmx.l.google.com	10	300
mdn.co.jp	alt4.aspmx.l.google.com	10	300
mdn.co.jp	alt1.aspmx.l.google.com	5	300
mdn.co.jp	alt2.aspmx.l.google.com	5	300

Host	NS Record	TTL
mdn.co.jp	ns-130.awsdns-16.com	172800
mdn.co.jp	ns-1413.awsdns-48.org	172800
mdn.co.jp	ns-1875.awsdns-42.co.uk	172800
mdn.co.jp	ns-543.awsdns-03.net	172800

Host	TXT Record	TTL
mdn.co.jp	MS=ms92589188	300
mdn.co.jp	v=spf1 include:_spf.google.com include:_spf.impress.co.jp ~all	300

ns-1413.awsdns-48.org
TTL: 900
Email address: awsdns-hostmaster.amazon.com
Serial: 1
Refresh: 7200
Retry: 900
Expire: 1209600
Minimum: 86400

Mdn.co.jp HTML Validation

HTML Validation Tool

Errors

Bad start tag in “iframe” in “head”.

Element “head” is missing a required instance of child element “title”.

Stray end tag “noscript”.

Attribute “name” not allowed on element “meta” at this point.

Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.

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

A “link” element must not appear as a descendant of a “body” element unless the “link” element has an “itemprop” attribute or has a “rel” attribute whose value contains “dns-prefetch”, “pingback”, “preconnect”, “prefetch”, “preload”, “prerender”, or “stylesheet”.

Stray end tag “head”.

Start tag “body” seen but an element of the same type was already open.

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

Attribute “ga_action” not allowed on element “a” at this point.

Bad value “MdN DESIGNFONT STORE” for attribute “href” on element “a”: Illegal character in path segment: space is not allowed.

Warnings

Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).

Mdn.co.jp Desktop Insights

Last tested: 08/26/2017

Desktop

Desktop Speed

61%

Optimize images

Avoid landing page redirects

Enable compression

Leverage browser caching

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

Minify JavaScript

Minify CSS

Minify HTML

Desktop Resource Breakdown

Total Resources	207
Number of Hosts	36
Static Resources	163
JavaScript Resources	58
CSS Resources	22

Mdn.co.jp Mobile Insights

Last tested: 05/26/2017

Mobile

Mobile Usability

100%

Mobile Speed

62%

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

Avoid landing page redirects

Leverage browser caching

Prioritize visible content

Optimize images

Minify CSS

Minify JavaScript

Mobile Resource Breakdown

Total Resources	85
Number of Hosts	18
Static Resources	61
JavaScript Resources	32
CSS Resources	17

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Mdn.co.jp MdN｜デザインとクリエイティブを深掘りするWebメディア

MdNはデザインとクリエイティブを深掘りするメディアです。デザインツールの表現手法や、エンタメの表現面を取材等、実用に役立つ・仕事のヒント・作品をより楽しむ情報をお届けします。

Quick Summary

Mdn.co.jp General Information

Mdn.co.jp Safety Information

Mdn.co.jp Server Information

Mdn.co.jp Domain Name Information

Mdn.co.jp HTML Validation

Mdn.co.jp Desktop Insights

Mdn.co.jp Mobile Insights

Mdn.co.jp Nearest Competitors

Mdn.co.jp Typos