Kobun.co.jp 光文書院|小学校 テスト・ドリル・デジタル教材・校務支援

光文書院は,小学校(小学生)対象に国語・算数・理科・社会・家庭科などのテストやくりかえし漢字ドリル・計算ドリルなどの図書教材の発行,さんすうせっとなどの教具の制作,デジタル教材や校務支援ソフトなどの教育ICT事業を展開しています。


Online Status
UNKNOWN

Over the time kobun.co.jp has been ranked as high as 21,021 in the world.

Kobun.co.jp receives about 539 unique visitors and 1,078 pageviews per day. The estimated value of kobun.co.jp is 8,760 USD. Each unique visitor makes about 2 pageviews on average.

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

At the time of the last check (August 08, 2024) kobun.co.jp has an expired wildcard SSL certificate issued by Cybertrust Japan Co., Ltd. (expired on February 12, 2023). Check other websites using SSL certificates issued by Cybertrust Japan Co., Ltd..

According to Google Safe Browsing, Google Safe Search, Symantec and Web of Trust kobun.co.jp is quite a safe domain.

Mobile-Friendly test indicates that kobun.co.jp is well optimized for mobile and tablet devices, however website page loading time could be improved.


Global Rank
628,974
Average Load Time
0.55sec
Links In Count
66
Website Value
$8,760

Overview
Last Updated: 02/22/2025
Overall result - "kobun.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: 03/27/2024
kobun.co.jp is safe.

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

Google Safe Search
Last Updated: 11/22/2016
kobun.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
Malware not found at "kobun.co.jp".
"kobun.co.jp" is not a phishing page.
"kobun.co.jp" does not install unwanted software.
"kobun.co.jp" does not contain harmfull applications.
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: 02/26/2021
kobun.co.jp is safe.

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

Web of Trust
Last Updated: 01/10/2019
kobun.co.jp child safety isvery good.

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

SSL Information
Domain *.kobun.co.jp
Issuer OrganizationCybertrust Japan Co., Ltd.
Issuer Cybertrust Japan SureServer CA G4
Algorithm RSA-SHA256
Valid form 02/08/2022
Expiration 02/12/2023
SignedCertificate is not self signed
Additional Domains *.kobun.co.jp
kobun.co.jp
Server Location
Tokyo
Tokyo
Japan
ASN Information

ASN ID: 16509
ASN Title: AMAZON-02 - Amazon.com, Inc., US

Last Update: 12/23/2024

#
# 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.
#

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] KOBUN.CO.JP
e. [そしきめい] かぶしきかいしゃこうぶんしょいん
f. [組織名] 株式会社光文書院
g. [Organization] KOBUNSHOIN PUBLISHING CO., LTD.
k. [組織種別] 株式会社
l. [Organization Type] corporation
m. [登録担当者] TM70505JP
n. [技術連絡担当者] HY4200JP
p. [ネームサーバ] ns1.shsvr.net
p. [ネームサーバ] ns2.shsvr.net
s. [署名鍵]
[状態] Connected (2023/03/31)
[登録年月日] 1999/03/25
[接続年月日] 1999/04/05
[最終更新] 2022/04/01 01:02:38 (JST)

DNS Records
HostA RecordTTL
kobun.co.jp52.69.41.1803600
HostMX RecordPriorityTTL
kobun.co.jpALT1.ASPMX.L.GOOGLE.COM203600
kobun.co.jpASPMX2.GOOGLEMAIL.COM303600
kobun.co.jpASPMX.L.GOOGLE.COM103600
kobun.co.jpALT2.ASPMX.L.GOOGLE.COM203600
kobun.co.jpASPMX3.GOOGLEMAIL.COM303600
HostNS RecordTTL
kobun.co.jpns2.shsvr.net86400
kobun.co.jpns1.shsvr.net86400
HostTXT RecordTTL
kobun.co.jpv=spf1 include:_spf.google.com include:amazonses.com include:spf.haihaimail.jp include:spf.smktg.jp +ip4:13.71.133.58 +ip4:210.239.65.9 +ip4:153.125.143.162 +ip4:150.249.196.56 -all3600
kobun.co.jpsending_domain1056673=b641bde3d7258e60fec21cbb0c93a1931e6f885c91545d4b1d7d1570e31d1dc93600
kobun.co.jppardot1056673=a285f979fcd7c0a0bc42a5b2c6f91cec563947a01182ae93bf897e91defcae353600

ns1.shsvr.net
TTL: 3600
Email address: ns2.shsvr.net
Serial: 186
Refresh: 10800
Retry: 1800
Expire: 259200
Minimum: 1800

Errors
Warnings

Last tested: 04/13/2016

Desktop
Desktop Speed
42%
Desktop Resource Breakdown
Total Resources106
Number of Hosts3
Static Resources101
JavaScript Resources14
CSS Resources12

Last tested: 04/13/2016

Mobile
Mobile Usability
99%
Mobile Speed
29%
Mobile Resource Breakdown
Total Resources106
Number of Hosts3
Static Resources101
JavaScript Resources16
CSS Resources16
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