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Japanese National Agency for ISIL

What is ISIL?

An ISIL (the International Standard identifier for libraries and related organizations) can be allocated to a library, an archive, a museum or a related organization.
ISO 15511 stipulates that the ISIL structure shall be administrated by national allocation agencies in each country. The National Diet Library (NDL) is in charge of allocation and maintenance of the ISIL as the National Registration Allocation Agency of Japan from October 2011.

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ISIL structure of Japan

The ISIL structure of Japan is as below.

country code hyphen 1 digit to identify institution type by letter or numeral 6 digits for each institution's ID in letters and numerals
JP - 1 123456

For libraries and its related institutions, we assign the numeral '1' as institution type and a serial number as each institution's ID.

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ISIL list of Japan

The ISIL list of Japan is open to the public and is updated from time to time. The ISIL list of Japan provides you the information below.

  • ISIL
  • Institution name in English
  • Institution name in Japanese
  • Institution name in Japanese (kana form)
  • Postal code
  • Address
  • Telephone number
  • Fax number
  • URL

Our lists are in the public domain. You can use the lists freely.

Here are the ISIL lists of Japan. 2017-10-12

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Procedures to obtain ISIL and update ISIL list

For the time being, we allocate ISIL to public libraries, university libraries, special libraries and related institutions. School libraries, archives and museums are outside its scope at present.
Please send the application forms below to apply for registration, notify change or the closure of your institution. When we receive your application for registration or your closure notification, we will get back to you by e-mail or telephone for confirmation. Regarding notification of change, we will contact you when necessary.

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Beta version of International Standard Identifier for Libraries and Related Organizations (ISIL) LOD

The NDL provides ISIL LOD as part of its initiatives to promote utilization of NDL's data. Please see the following page for further details.

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Contact us

For further information please contact below.


[Japanese National Agency for ISIL]
Library Support Division
Kansai-kan of the National Diet Library
E-mail: isilat n d l dot g o dot j p

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