Nikku.co.jp 401 Authorization Required
Server IP address resolved: No
Http response code: None
Last Checked: 11/02/2026
Nikku.co.jp attracts 2,182 unique visitors daily, generating 4,363 pageviews. The estimated value of nikku.co.jp is 3,338 USD. Each visitor views approximately 2.14 pages on average.
Nikku.co.jp is hosted by IIJ Internet Initiative Japan Inc., JP. Check out other websites hosted by IIJ Internet Initiative Japan Inc., JP.
See the list of other websites hosted by IIJ Internet Initiative Japan Inc., JP.
Nikku.co.jp is registered with the .JP top-level domain. Explore additional websites within the .JP zone.
According to the latest verification on (November 02, 2026), nikku.co.jp has an invalid SSL certificate. Click the "Refresh" button in the Safety Information section for updated SSL details.
According to Google Safe Browsing and Symantec nikku.co.jp appears to be a safe domain.
Based on Google's Mobile-Friendly test, nikku.co.jp is not well optimized for mobile and tablet devices. Ensuring your site is mobile-friendly guarantees better performance across all devices, and improving the web page loading time could further enhance user experience.
not found

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

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.

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.

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

The WOT calculates reputation of the nikku.co.jp. This reputation system receives ratings from users and information from third-party sources, assesses the nikku.co.jp for safety features and confirms, whether nikku.co.jp is suitable for children.
| WARNING! | Certificate download error. Previous scan results are shown below. |
| Domain | Unknown |
| Issuer Organization | Unknown |
| Issuer | Unknown |
| Algorithm | Unknown |
| Valid form | Unknown |
| Expiration | Unknown |
| Signed | No information |
| Additional Domains |
ASN ID: 2497
ASN Title: IIJ Internet Initiative Japan Inc., JP
Last Update: 05/09/2026
% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to 'AS2497 - AS2528'
as-block: AS2497 - AS2528
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 'AS2497'
aut-num: AS2497
as-name: IIJ
descr: Internet Initiative Japan Inc.
import:
export:
country: JP
admin-c: JP00006327
tech-c: JP00006327
last-modified: 2005-06-03T00:47:08Z
source: JPNIC
% This query was served by the APNIC Whois Service version 1.88.15-46 (WHOIS-US3)
[ 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] NIKKU.CO.JP
e. [そしきめい] にほん くうちょう さーびす かぶしきがいしゃ
f. [組織名] 日本空調サービス株式会社
g. [Organization] NIPPON KUCHO SERVICE CO.,LTD.
k. [組織種別] 株式会社
l. [Organization Type] Company
m. [登録担当者] HO768JP
n. [技術連絡担当者] TN5160JP
p. [ネームサーバ] dns4.nikku.co.jp
p. [ネームサーバ] dns3.nikku.co.jp
s. [署名鍵]
[状態] Connected (2022/09/30)
[登録年月日] 1998/09/24
[接続年月日] 1998/10/08
[最終更新] 2022/05/17 10:55:26 (JST)
| Host | A Record | TTL |
|---|
| Host | MX Record | Priority | TTL |
|---|
| Host | NS Record | TTL |
|---|
| Host | TXT Record | TTL |
|---|
Last tested: 06/03/2016

| Total Resources | 1 |
| Number of Hosts | 1 |
Last tested: 06/03/2016


| Total Resources | 1 |
| Number of Hosts | 1 |
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