Chiba-gakushu.jp 千葉市生涯学習センター：千葉市の生涯学習情報・イベント・ボランティア情報 – 千葉市生涯学習センターのオフィシャルサイトです。センター主催の講座・イベントや千葉市の生涯学習情報、ボランティア情報等を掲載しています。

Online Status
Offline

Server IP address resolved: No
Http response code: None
Last Checked: 11/02/2026

Chiba-gakushu.jp attracts 1,563 unique visitors daily, generating 3,127 pageviews. The estimated value of chiba-gakushu.jp is 2,311 USD. Each visitor views approximately 2.14 pages on average.

According to Majestic's traffic estimates, chiba-gakushu.jp ranks 85,308 globally.

See the list of other websites hosted by SAKURA-C SAKURA Internet Inc., JP.

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

A recent examination on (July 03, 2025), indicates that chiba-gakushu.jp has an expired SSL certificate issued by Let's Encrypt (expired on August 11, 2025). 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 chiba-gakushu.jp appears to be a safe domain.

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

Global Rank
0
Average Load Time
0.00sec
Links In Count
81
Website Value
$2,160

Audience Geography. Where are chiba-gakushu.jp visitors located?

Country Visitors
Country Pageviews
Country Rank

Where do visitors go on chiba-gakushu.jp?

Subdomain Pageviews
Subdomain Pageviews per User
Subdomain Reach

How popular is chiba-gakushu.jp?

PeriodGlobal RankGlobal Rank Delta
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Overview
Last Updated: 11/02/2026
Overall result - chiba-gakushu.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: 02/19/2026
chiba-gakushu.jp is safe.
Norton ConnectSafe evaluates chiba-gakushu.jp for any unsafe and insecure content. The results are critical for families with young children.
Google Safe Search
Last Updated: 04/18/2017
chiba-gakushu.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
chiba-gakushu.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: 02/16/2021
chiba-gakushu.jp is safe.
McAfee assesses chiba-gakushu.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 chiba-gakushu.jp for mature or inappropriate content, only security checks are evaluated.
Web of Trust
Last Updated: 11/02/2026
chiba-gakushu.jp child safety is unknown.
The WOT calculates reputation of the chiba-gakushu.jp. This reputation system receives ratings from users and information from third-party sources, assesses the chiba-gakushu.jp for safety features and confirms, whether chiba-gakushu.jp is suitable for children.
Chiba-gakushu.jp | SSL Certificate Information
SSL Checker Tool
Domainchiba-gakushu.jp
Issuer OrganizationLet's Encrypt
IssuerR10
AlgorithmRSA-SHA256
Valid form05/13/2025
Expiration08/11/2025
SignedCertificate is not self signed
Additional Domains chiba-gakushu.jp
www.chiba-gakushu.jp
Server Location
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Chiba-gakushu.jp ASN Information
ASN Lookup Tool

ASN ID: 9371
ASN Title: SAKURA-C SAKURA Internet Inc., JP

Last Update: 05/15/2026

% [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 'AS9349 - AS9380'

as-block: AS9349 - AS9380
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 'AS9371'

aut-num: AS9371
as-name: SAKURA-C
descr: SAKURA Internet Inc.
import: from AS7514 100 accept ANY
import: from AS4716 110 accept ANY
import: from AS2554 110 accept ANY
import: from AS2907 110 accept ANY
import: from AS7506 110 accept ANY
import: from AS7684 110 accept ANY
export: to AS7514 announce AS9371
export: to AS4716 announce AS9371
export: to AS2554 announce AS9371
export: to AS2907 announce AS9371
export: to AS7506 announce AS9371
export: to AS7684 announce AS9371
country: JP
admin-c: KT749JP
tech-c: KT749JP
tech-c: KW419JP
last-modified: 2007-05-23T21:20:24Z
source: JPNIC

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

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] CHIBA-GAKUSHU.JP

[登録者名] 公益財団法人千葉市教育振興財団
[Registrant] Chiba City Lifelong Learning Foundation

[Name Server] ns6-tk01.ocn.ad.jp
[Name Server] ns6-tk02.ocn.ad.jp
[Signing Key]

[登録年月日] 2005/10/20
[有効期限] 2023/10/31
[状態] Active
[最終更新] 2022/11/01 01:05:09 (JST)

Contact Information: [公開連絡窓口]
[名前] さくらインターネット株式会社
[Name] SAKURA internet Inc.
[Email] nic-staff@sakura.ad.jp
[Web Page]
[郵便番号] 530-0001
[住所] 大阪府大阪市
北区梅田1丁目12番12号
東京建物梅田ビル11階
[Postal Address] Osaka
Osaka
11F,1-12-12,Umeda,Kita-ku
[電話番号] 06-6476-8790
[FAX番号]

DNS Records
DNS Lookup Tool
HostA RecordTTL
HostMX RecordPriorityTTL
HostNS RecordTTL
HostTXT RecordTTL
HTML Validation Tool
Errors
Warnings

Last tested: 12/18/2017

Desktop
Desktop Speed
32%
Desktop Resource Breakdown
Total Resources167
Number of Hosts20
Static Resources141
JavaScript Resources28
CSS Resources11

Last tested: 06/01/2018

Mobile
Mobile Usability
96%
Mobile Speed
26%
Mobile Resource Breakdown
Total Resources164
Number of Hosts17
Static Resources148
JavaScript Resources33
CSS Resources14
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