BS ISO 6166:2021 Financial services — International securities identification number (ISIN).
4.2 Instruments for which the ISIN is allocated
At a minimum, the ISIN is allocated to financial or referential instruments in the following list (see Annex A). It is allocated to these instruments with the following principles:
a) Equities, debt instruments, entitlements and structured products
The ISIN is allocated to the financial instrument regardless of whether or not it is negotiable. However, in the case of individual bank loans the ISIN is only allocated if the instrument is negotiable.
b) Derivatives
The ISIN is allocated to those instruments that are traded in their own right, regardless of whether or not the underlying instrument has been assigned an ISIN.
c) Referential instruments
The ISIN is allocated to these products, which are not financial instruments, when they are underlying or reference assets to financial instruments.
d) Other instruments (combined instruments, emission allowances and carbon credits, other assets)
For the groups “combined instruments” and “emission allowances and carbon credits”, the ISIN is allocated when they are traded or admitted to trading. The group “other assets (insurance policies, real estate deeds, etc.)” may in any case be identified by an ISIN.
The ISIN is allocated to these instruments regardless of the technology used for creating the respective instruments (e.g. both to instruments in paper form and to instruments in electronic form, including tokenized instruments).
4.3 Assignment of related codes
Whenever an ISIN is allocated to a financial or referential instrument, a CFI code (see ISO 10962) and an FISN (see ISO 18774) should also be assigned to the respective instrument.
5 Registration Authority (RA)
5.1 Name and contact details of the Registration Authority
The name and contact information of the RA for this document can be found at maintenance agencies.html.
Requests for information and enquiries about this document and its implementation can be directed to the RA.
5.2 Service provision
The RA is responsible for the provision of the following services:
a) to promote and make all efforts to ensure the proper use of this document and to ensure the uniqueness and prevent the reuse of allocated lSlN codes;
b) to support the production of ISINs and to ensure the initial distribution of the ISIN record (see AnnxB) to users;
c) to continuously adapt the ISIN guidelines for allocation and registration of ISINs to meet the needs of the market;
d) to respond to enquiries and information requests related to this document in a timely manner.BS ISO 6166 pdf download.