Shibumaku.jp 渋谷教育学園幕張中学校・高等学校 – 学校法人 渋谷教育学園 幕張中学校・高等学校の公式サイト。学校紹介や入試情報など本校に関する情報をご覧いただけます.

Online Status
Offline

Server IP address resolved: No
Http response code: None
Last Checked: 11/03/2026

Shibumaku.jp attracts 718 unique visitors daily, generating 1,436 pageviews. The estimated value of shibumaku.jp is 12,498 USD. Each visitor views approximately 2.14 pages on average.

According to Majestic's traffic estimates, shibumaku.jp ranks 23,761 globally, with the majority of its visitors coming from Japan, where it holds the 45,105 position.

It is beneficial for shibumaku.jp that their data center (provided by IDC Yahoo Japan Corporation, JP) is located in Japan, as this helps reduce page load time for most visitors.

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

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

A recent examination on (July 06, 2024), indicates that shibumaku.jp has an expired SSL certificate issued by Let's Encrypt (expired on September 28, 2024). Click the "Refresh" button in the Safety Information section for updated SSL details. See the list of websites using SSL certificates issued by Let's Encrypt.

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

Based on Google's Mobile-Friendly test, shibumaku.jp is optimized for mobile and tablet devices.

Global Rank
505,741
Average Load Time
0.22sec
Links In Count
85
Website Value
$11,680
Overview
Last Updated: 11/03/2026
Overall result - shibumaku.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
shibumaku.jp is safe.
Norton ConnectSafe evaluates shibumaku.jp for any unsafe and insecure content. The results are critical for families with young children.
Google Safe Search
Last Updated: 01/31/2017
shibumaku.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
shibumaku.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: 01/14/2021
shibumaku.jp is safe.
McAfee assesses shibumaku.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 shibumaku.jp for mature or inappropriate content, only security checks are evaluated.
Web of Trust
Last Updated: 11/03/2026
shibumaku.jp child safety is unknown.
The WOT calculates reputation of the shibumaku.jp. This reputation system receives ratings from users and information from third-party sources, assesses the shibumaku.jp for safety features and confirms, whether shibumaku.jp is suitable for children.

Shibumaku.jp | SSL Certificate Information
Domainwww.shibumaku.jp
Issuer OrganizationLet's Encrypt
IssuerR11
AlgorithmRSA-SHA256
Valid form06/30/2024
Expiration09/28/2024
SignedCertificate is not self signed
Additional Domains app.shibumaku.jp
dev.app.shibumaku.jp
new.shibumaku.jp
shibumaku.jp
www.shibumaku.jp
Server Location

Shibumaku.jp ASN Information

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

Last Update: 03/15/2026

% [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] SHIBUMAKU.JP

[登録者名] 株式会社ロクナナ
[Registrant] rokunana Inc.

[Name Server] ns-1352.awsdns-41.org
[Name Server] ns-1604.awsdns-08.co.uk
[Name Server] ns-341.awsdns-42.com
[Name Server] ns-974.awsdns-57.net
[Signing Key]

[登録年月日] 2001/05/01
[有効期限] 2025/05/31
[状態] Active
[最終更新] 2024/06/01 01:05:03 (JST)

Contact Information: [公開連絡窓口]
[名前] 株式会社ロクナナ
[Name] rokunana Inc.
[Email] info@rokunana.com
[Web Page] http://rokunana.com
[郵便番号] 150-0001
[住所] 東京都渋谷区神宮前1-1-12-203
[Postal Address] #203, 1-1-12 Jingu-mae,Shibuya-ku
Tokyo
Japan
[電話番号] 03-3408-4605
[FAX番号]


DNS Records
HostA RecordTTL
shibumaku.jp210.152.85.54300
HostMX RecordPriorityTTL
shibumaku.jpshibumaku-jp.mail.protection.outlook.com0300
HostNS RecordTTL
shibumaku.jpns-1352.awsdns-41.org172800
shibumaku.jpns-1604.awsdns-08.co.uk172800
shibumaku.jpns-341.awsdns-42.com172800
shibumaku.jpns-974.awsdns-57.net172800
HostTXT RecordTTL
shibumaku.jpMS=EFABD8EA8FFD0D012C75F81C9328BDAEF9A68BDA300
shibumaku.jpMS=ms38842480300
shibumaku.jpv=spf1 include:spf.protection.outlook.com ip4:182.48.49.233 ip4:210.152.85.54 ip6:2403:3a00:101:16:182:48:49:233 ~all300

ns-974.awsdns-57.net
TTL: 900
Email address: awsdns-hostmaster.amazon.com
Serial: 1
Refresh: 7200
Retry: 900
Expire: 1209600
Minimum: 86400


Errors
Warnings

Last tested: 09/28/2015

Desktop
Desktop Speed
57%

Desktop Resource Breakdown
Total Resources67
Number of Hosts4
Static Resources65
JavaScript Resources7
CSS Resources7

Last tested: 07/04/2019

Mobile
Mobile Usability
67%
Mobile Speed
100%

Mobile Resource Breakdown
Total Resources2
Number of Hosts1
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