Jump to main contents

Working for the better Internet Infrastructure.


WHOIS Search Site Search About WHOIS JPNIC WHOIS Gateway
WHOIS Search Site Search

Frequently Searched Keywords

Abuse and Spam issues

For those who found us from Whois

Thank you for contacting us.

We, Japan Network Information Center (JPNIC), are NOT an ISP and are an organization that allocates and manages IP addresses and AS numbers in Japan.


Because of our nature as an IP address management organization in Japan, there are cases to be misunderstood as a source of network abuse or unsolicited bulk email (UBE, UCE or spam). Since our role is just allocating/assigning IP addresses, please inquire the ISP for the user of the IP address that you are looking for.

You can confirm the abuse contact information by our Whois retrieval service.

Please refer the following URI to retrieve using an IP address as a keyword,


Whois Help: http://www.nic.ad.jp/en/db/whois/
Screen: whois top
Screen: whois 1st

then click the larger block (=smaller number after the slash) of IP addresses under the "Less Specific Info." section. Then you'll find the abuse contact of upstream provider.

Screen: whois 2nd

If there is no abuse contact in the address range, please use Administrative or Technical contact instead.

Note: Please check "English page" link add /e at the end of the URI to avoid the result in Japanese.

If you need to contact us, please use the following:

E-mail: hostmaster@nic.ad.jp
Fax: +81-3-5297-2312
Tel: +81-3-5297-2311 (10am-6pm UTC+9)

Rate this page

Did this page help you to achieve your goal?
Please let us know if you have any suggestions as to how we could improve this page.

If you require an answer, please contact us by email.


Copyright© 1996-2024 Japan Network Information Center. All Rights Reserved.