Kawaijuku.jp 河合塾グループ

河合塾グループのWebサイトです。河合塾グループは、社会に新たな教育価値を提供し、次世代人材の育成をめざしています。グループの英知を結集した「教育研究開発活動」を核に、「進学教育事業」「教育活動支援事業」を両輪として、広く社会に貢献します。

Online Status
Online

Server IP address resolved: Yes
Http response code: 200
Response time: 2.41 sec.
Last Checked: 11/02/2026

Kawaijuku.jp attracts 284 unique visitors daily, generating 284 pageviews. The estimated value of kawaijuku.jp is 3,124 USD. Each visitor views approximately 1.07 pages on average.

According to Majestic's traffic estimates, kawaijuku.jp ranks 28,767 globally.

Kawaijuku.jp server is located in Japan, so we cannot determine if the distance might affect the page load time.

See the list of other websites hosted by IDC Yahoo Japan Corporation, JP.

Kawaijuku.jp is registered with the .JP top-level domain. Explore additional websites within the .JP zone.

A recent examination on (June 30, 2024), indicates that kawaijuku.jp has an expired wildcard SSL certificate issued by Cybertrust Japan Co., Ltd. (expired on December 31, 2024). Click the "Refresh" button in the Safety Information section for updated SSL details. See the list of websites using SSL certificates issued by Cybertrust Japan Co., Ltd..

According to Google Safe Browsing, Google Safe Search and Symantec kawaijuku.jp appears to be a safe domain.

Based on Google's Mobile-Friendly test, kawaijuku.jp is optimized for mobile and tablet devices, although the web page loading speed could be improved.

Global Rank
2,599,755
Average Load Time
0.30sec
Links In Count
46
Website Value
$2,920
Overview
Last Updated: 11/02/2026
Overall result - kawaijuku.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: 02/06/2026
kawaijuku.jp is safe.
Norton ConnectSafe evaluates kawaijuku.jp for any unsafe and insecure content. The results are critical for families with young children.
Google Safe Search
Last Updated: 02/04/2017
kawaijuku.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
kawaijuku.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: 01/18/2021
kawaijuku.jp is safe.
McAfee assesses kawaijuku.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 kawaijuku.jp for mature or inappropriate content, only security checks are evaluated.
Web of Trust
Last Updated: 11/02/2026
kawaijuku.jp child safety is unknown.
The WOT calculates reputation of the kawaijuku.jp. This reputation system receives ratings from users and information from third-party sources, assesses the kawaijuku.jp for safety features and confirms, whether kawaijuku.jp is suitable for children.

Kawaijuku.jp | SSL Certificate Information
Domain*.kawaijuku.jp
Issuer OrganizationCybertrust Japan Co., Ltd.
IssuerCybertrust Japan SureServer CA G4
AlgorithmRSA-SHA256
Valid form12/01/2023
Expiration12/31/2024
SignedCertificate is not self signed
Additional Domains *.kawaijuku.jp
kawaijuku.jp
Server Location

Kawaijuku.jp ASN Information

ASN ID: 4694
ASN Title: IDC Yahoo Japan Corporation, JP

Last Update: 03/10/2026

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

% Information related to 'AS4608 - AS4864'

as-block: AS4608 - AS4864
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: 2008-09-04T06:40:26Z
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 'AS4672 - AS4735'

as-block: AS4672 - AS4735
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: 2017-06-12T03:54:29Z
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 'AS4694'

aut-num: AS4694
as-name: IDC
descr: Yahoo Japan Corporation
import:
export:
country: JP
admin-c: MH15688JP
tech-c: AN8394JP
tech-c: MT21278JP
last-modified: 2012-10-04T04:24:34Z
source: JPNIC

% This query was served by the APNIC Whois Service version 1.88.15-46 (WHOIS-US4)

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]
[Domain Name] KAWAIJUKU.JP

[登録者名] 学校法人河合塾
[Registrant] KAWAIJUKU EDUCATIONAL INSTITUTION

[Name Server] ns.keinet.ne.jp
[Name Server] ns.kawai-juku.ac.jp
[Name Server] rjer.nn.kawai-juku.ac.jp
[Signing Key]

[登録年月日] 2001/03/26
[有効期限] 2025/03/31
[状態] Active
[最終更新] 2024/04/01 01:05:04 (JST)

Contact Information: [公開連絡窓口]
[名前] 学校法人河合塾
[Name] KAWAIJUKU EDUCATIONAL INSTITUTION
[Email] webinfo@kawaijuku.jp
[Web Page]
[郵便番号] 464-8610
[住所] 愛知県名古屋市千種区今池2-4-20
[Postal Address] 2-4-20, Imaike, Chikusa, Nagoya, Aichi
[電話番号] 052-735-1557
[FAX番号]


DNS Records
HostA RecordTTL
HostMX RecordPriorityTTL
HostNS RecordTTL
HostTXT RecordTTL

Errors
Warnings

Last tested: 06/30/2019

Desktop
Desktop Speed
11%

Desktop Resource Breakdown
Total Resources78
Number of Hosts6
Static Resources73
JavaScript Resources10
CSS Resources6

Last tested: 07/07/2019

Mobile
Mobile Usability
99%
Mobile Speed
9%

Mobile Resource Breakdown
Total Resources79
Number of Hosts6
Static Resources74
JavaScript Resources10
CSS Resources6
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