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JPNIC Translated Document
Source document: jpnic/ip-addr-return.txt
Date of the source: July 27, 1992
Date of the last update of this translation: February 14, 1996
This is a translation of a JPNIC document. JPNIC provides this
translation for convenience of those who can not read Japanese. But it
may contain mis-tranlations, and is by no means official. One should
consult the source document written in Japanese for detail.
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On Returning Unused IP Addresses
Japan Network Information Center
[ The copyright of this document is held by Japan Network ]
[ Information Center. The document may be freely reproduced and ]
[ distributed provided it is in no way modified. The latest ]
[ version of the document can be obtained by an anonymous ftp ]
[ from nic.ad.jp:pub/jpnic or by sending an e-mail to ]
[ mail-server@nic.ad.jp. ]
The Japan Network Information Center (JPNIC) recommends the users
having previously allocated IP addresses that are no longer being
used to return those addresses to JPNIC. The addresses that can be
so returned are any unused IP address allocated by an authorized
address allocating organization irrespective of whether it was The
NIC (The Network Information Center of Internet), the Network
Address Coordination Committee, or the Japan Network Information
Center (JPNIC).
The owners of unused IP addresses are strongly urged to cooperate
because IP addresses are limited resources that are being shared
all over the world. Furthermore, returning of IP addresses will
in no way affect the future applications for the acquisition of
IP addresses by the same organization.
For returning such addresses, fill in the particulars in the
following format and send to the address given below. Also,
in the case of electronic mail, the sender should be either
the administrative contact or the technical contact.
Upon receiving a request for return of IP addresses, JPNIC will
promptly contact the person responsible for the requesting
organization.
E-mail Address: query@ip.nic.ad.jp
Ordinary mail: IP Address Allocation Group
Japan Network Information Center
Mansui Bldg. 3F, 2-9-18, Kanda-Surugadai,
Chiyoda-ku, Tokyo 101, Japan
