Ji-sedai.jp ジセダイ―星海社がおくる、行動機会提案サイト

「ジセダイ」は、20代以下の若者に向けた、行動機会提案サイトです。読む→考える→行動する。このサイクルを、困難な時代にあっても前向きに自分の人生を切り開いていこうとする次世代の人間に向けて提供し続けます。

Ji-sedai.jp Overview

Ji-sedai.jp ranking shows that the page is at position 1,198,568 over the world.

Ji-sedai.jp hosting company servers are placed in the Japan, but, unfortunately, it’s not possible to identify the countries where the bulk of ji-sedai.jp users come from and, therefore, we couldn’t define if the distance can influence the webpage load time. See the list of other webpages hosted on AMAZON-02 - Amazon.com, Inc., US servers.

In terms of rank-to-traffic ratio, ji-sedai.jp has 616 unique users per day, viewing 622 pages. The rank based value of ji-sedai.jp is 6,314 USD. Every user makes 1.07 pageviews on average.

Ji-sedai.jp boasts a link base consisting of 243 referring domains and 305 external backlinks, as revealed by the data obtained from web network scanning.

Ji-sedai.jp top-level domain belongs to .JP domain zone. Check other webpages in .JP zone.

According the last verification test in August 12, 2022, ji-sedai.jp has an expired SSL certificate issued by Let's Encrypt (expired on November 01, 2022). Click button “Update” SSL Information at the Safety Information section. Check the list of websites using SSL by Let's Encrypt.

Based on data from Google Safe Browsing, Google Safe Search, Symantec and Web of Trust ji-sedai.jp is a fairly safe domain.

According the Mobile-Friendly test by Google ji-sedai.jp is nice optimized for mobile devices and tablets.

Ji-sedai.jp Rank Summary

Global Rank

1,198,568

Average Load Time

0.15sec

Links In Count

134

Website Value

$5,846

Audience Geography. Where are ji-sedai.jp visitors located?

Country	Visitors

Country	Pageviews

Country	Rank

Where do visitors go on ji-sedai.jp?

Subdomain	Pageviews

Subdomain	Pageviews per User

Subdomain	Reach

How popular is ji-sedai.jp?

Period	Global Rank	Global Rank Delta
past 3 months	1198568	-67964

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	1872679	36567	1	-3.61%	1	-16.67%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	962866	-117866	4	20%

Ji-sedai.jp Website Safety

Overview

Last Updated: 02/06/2026

Overall result - ji-sedai.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: 03/26/2025

ji-sedai.jp is safe.

Norton ConnectSafe evaluates ji-sedai.jp for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 02/18/2019

ji-sedai.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

ji-sedai.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: 02/25/2021

ji-sedai.jp is safe.

McAfee assesses ji-sedai.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 ji-sedai.jp for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 01/10/2019

ji-sedai.jp child safety is very good.

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

SSL Information

SSL Checker Tool

Domain	ji-sedai.jp
Issuer Organization	Let's Encrypt
Issuer	R3
Algorithm	RSA-SHA256
Valid form	08/03/2022
Expiration	11/01/2022
Signed	Certificate is not self signed
Additional Domains	ji-sedai.jp

Ji-sedai.jp Rank History

Alexa Rank shows how popular ji-sedai.jp is in comparison with other sites. The most popular site has Alexa Rank equals 1. If ji-sedai.jp has Alexa Rank equals 100,000, then it is in TOP 100,000 popular sites in the world. The rank is calculated using a combination of average daily visitors to ji-sedai.jp and pageviews on ji-sedai.jp over the past 3 months.

Ji-sedai.jp Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 16509

ASN Title: AMAZON-02 - Amazon.com, Inc., US

Last Update: 12/17/2025

#
# 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: 16509
ASName: AMAZON-02
ASHandle: AS16509
RegDate: 2000-05-03
Updated: 2012-03-02
Ref: https://rdap.arin.net/registry/autnum/16509

OrgName: Amazon.com, Inc.
OrgId: AMAZON-4
Address: 1918 8th Ave
City: SEATTLE
StateProv: WA
PostalCode: 98101-1244
Country: US
RegDate: 1995-01-23
Updated: 2017-01-28
Ref: https://rdap.arin.net/registry/entity/AMAZON-4

OrgAbuseHandle: AEA8-ARIN
OrgAbuseName: Amazon EC2 Abuse
OrgAbusePhone: +1-206-266-4064
OrgAbuseEmail: abuse@amazonaws.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/AEA8-ARIN

OrgTechHandle: ANO24-ARIN
OrgTechName: Amazon EC2 Network Operations
OrgTechPhone: +1-206-266-4064
OrgTechEmail: amzn-noc-contact@amazon.com
OrgTechRef: https://rdap.arin.net/registry/entity/ANO24-ARIN

RTechHandle: AC6-ORG-ARIN
RTechName: Amazon-com Incorporated
RTechPhone: +1-206-266-2187
RTechEmail: ipmanagement@amazon.com
RTechRef: https://rdap.arin.net/registry/entity/AC6-ORG-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.
#

Ji-sedai.jp Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

[ 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]
[Domain Name] JI-SEDAI.JP

[登録者名] 株式会社星海社
[Registrant] STAR SEAS COMPANY

[Name Server] ns-852.awsdns-42.net
[Name Server] ns-1891.awsdns-44.co.uk
[Name Server] ns-1395.awsdns-46.org
[Name Server] ns-197.awsdns-24.com
[Signing Key]

[登録年月日] 2011/08/05
[有効期限] 2025/08/31
[状態] Active
[最終更新] 2024/09/01 01:05:04 (JST)

Contact Information: [公開連絡窓口]
[名前] 太田克史
[Name] ota katsushi
[Email] info@seikaisha.co.jp
[Web Page]
[郵便番号] 112-0013
[住所] 東京都文京区音羽1-17-14
音羽YKビル4階
[Postal Address] 4F,otowa-YK, 1-17-14, otowa
bunkyo-ku,Tokyo,Japan
[電話番号] 03-6902-1730
[FAX番号]

DNS Records

DNS Lookup Tool

Host	A Record	TTL
ji-sedai.jp	210.151.43.140	3600

Host	MX Record	Priority	TTL
ji-sedai.jp	mail.ji-sedai.jp	0	86400

Host	NS Record	TTL
ji-sedai.jp	ns.ji-sedai.jp	259200

Host	TXT Record	TTL

ns.ji-sedai.jp
TTL: 3600
Email address:
Serial: 1517806776
Refresh: 16384
Retry: 2048
Expire: 1048576
Minimum: 2560

Ji-sedai.jp HTML Check

HTML Validation Tool

Errors

Attribute “xmlns:og” not allowed here.

Attribute “xmlns:mixi” not allowed here.

Attribute “xmlns:fb” not allowed here.

A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.

A slash was not immediately followed by “>”.

End tag had attributes.

Stray end tag “s…<”.

End tag “p” implied, but there were open elements.

Unclosed element “span”.

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

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.

The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.

The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.

Warnings

Attribute with the local name “xmlns:og” is not serializable as XML 1.0.

Attribute with the local name “xmlns:mixi” is not serializable as XML 1.0.

Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.

Empty heading.

Ji-sedai.jp Desktop Performance

Last tested: 05/03/2018

Desktop Speed

34%

Optimize images

Leverage browser caching

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

Minify JavaScript

Minify CSS

Desktop Resource Breakdown

Total Resources	228
Number of Hosts	15
Static Resources	213
JavaScript Resources	29
CSS Resources	7

Ji-sedai.jp Mobile Insights

Last tested: 06/15/2019

Mobile Usability

98%

Size tap targets appropriately

Mobile Speed

61%

Leverage browser caching

Optimize images

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

Minify JavaScript

Mobile Resource Breakdown

Total Resources	58
Number of Hosts	10
Static Resources	49
JavaScript Resources	9
CSS Resources	3

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Ji-sedai.jp ジセダイ―星海社がおくる、行動機会提案サイト

Ji-sedai.jp Overview

Ji-sedai.jp Rank Summary

Ji-sedai.jp Website Safety

Ji-sedai.jp Rank History

Ji-sedai.jp Hosting Information

Ji-sedai.jp Domain Registration and Settings

Ji-sedai.jp HTML Check

Ji-sedai.jp Desktop Performance

Ji-sedai.jp Mobile Insights

Ji-sedai.jp Similar Audits

Ji-sedai.jp Common Typos