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About ANNA Members

Member List

Numbering Agencies – by country, ISO country code, and membership status.

As of 16 June, 2023 there are currently 100 NNAs with full member status and 20 NNAs with Partner status.

To assist countries where no National Numbering Agency (NNA) exists, four numbering agencies (CUSIP Global Services in the US, WM Datenservice from Germany, SIX Financial Information and National Settlement Depository (MICEX Group) from Russia) have been designated as Substitute Numbering Agencies (SNAs). Areas of responsibility have been divided geographically among them, so that global coverage is achieved.

Once a country has appointed a National Numbering Agency, that agency and the substitute agency work closely together in order to ensure a smooth transition of the numbering function. The SNA for a country may also step in to assist the appointed NNA with operational issues.

Countries with an asterisk (*) display the SNA assigned to that country in case of need.


ISO Country CodeCountryE-Mail OrganizationWebsiteMembership StatusSubstitute Agency
AFAfghanistan Non-MemberWM Datenservice
AXAland Islands Non-MemberWM Datenservice
ALAlbania Non-MemberWM Datenservice
DZAlgeriadg@algerieclearing.dzAlgerie Clearing, SPAhttp://www.algerieclearing.dzPartnerWM Datenservice
ASAmerican Samoa Non-MemberCUSIP Global Services
ADAndorra Non-MemberWM Datenservice
AOAngolaintercambio@bodiva.aoAngolan Securities Exchange (Bodiva)http://www.bodiva.aoFull memberWM Datenservice
AIAnguilla Non-MemberCUSIP Global Services
AQAntarctica Non-MemberSIX Financial Information Ltd
AGAntigua and Barbuda Non-MemberCUSIP Global Services de Valores S.A. memberCUSIP Global Services
AMArmenia Central Depository of Armenia OJSChttp://www.cda.amFull memberWM Datenservice
AWAruba Non-MemberCUSIP Global Services Limited memberWM Datenservice
ATAustriaisin@oekb.atOesterreichische Kontrollbank Aktiengesellschaft (OeKB)http://www.oekb.atFull memberWM Datenservice Depository Center of the Republic of Azerbaijan memberWM Datenservice
BSBahamas Non-MemberCUSIP Global Services
BHBahrainBahrain Clear Company B.S.C. (CLOSED) memberWM Datenservice
BDBangladeshcdbl@bol-online.comCentral Depository Bangladesh Limited (CDBL) memberWM Datenservice Central Securities Depository Inc memberCUSIP Global Services
BYBelarusinfo@centraldepo.byThe Republican Unitary Enterprise - The Republican Central Securities Depositoryhttps://www.centraldepo.bycurrently suspendedWM Datenservice Financial Information Belgium S.A./N.V. acting as numbering agency on behalf of Euronext Brussels as official National Numbering Agency http://www.six-financial-information.comFull memberWM Datenservice
BZBelize Non-MemberCUSIP Global Services
BJBeninUEMOA c/o Bourse Régionale des Valeurs Mobilières - Afrique de l'Ouest
Regional Stock Exchange - West Africa
Non-MemberWM Datenservice
BMBermuda Non-MemberCUSIP Global Services
BTBhutan Non-MemberWM Datenservice
BOBoliviaEntidad de Depósito de Valores de Bolivia S.A. Full memberCUSIP Global Services
BQBonaire, Sint Eustatius and SabaEuroclear NederlandNon-MemberSIX Financial Information Ltd
BABosnia & Herzegovina Non-MemberWM Datenservice Stock Exchange Datenservice
BVBouvet IslandsVP SECURITIES A/SNon-MemberWM Datenservice S.A. - Brasil, Bolsa e Balcão memberCUSIP Global Services
IOBritish Indian Ocean Territory Non-MemberSIX Financial Information Ltd
BNBrunei Darussalam Non-MemberWM Datenservice
BGBulgariaCentral Depository ADhttp://www.csd-bg.bgFull memberWM Datenservice
BFBurkina Faso UEMOA c/o Bourse Régionale des Valeurs Mobilières - Afrique de l'Ouest Regional Stock Exchange - West AfricaNon-MemberWM Datenservice
BIBurundi Non-MemberWM Datenservice
CVCabo Verdebvc@bvc.cvBolsa de Valores de Cabo Verde, S.A. (Cape Verde Stock Exchange) http://www.bvc.cvFull memberWM Datenservice
KHCambodia Non-MemberWM Datenservice
CMCameroon Non-MemberWM Datenservice
CACanadaCDS.Onboarding@tmx.comCDS Clearing and Depository Services Inc. (CDS Clearing)http://www.cds.caFull memberCUSIP Global Services
KYCayman Islands Non-MemberCUSIP Global Services
CFCentral African RepublicNon-MemberWM Datenservice
TDChad Non-MemberWM Datenservice
CLChilevalores@dcv.clDCV Asesorias y Servicios S.A.http://www.dcv.clFull memberCUSIP Global Services Securities Industry Standardization Technical Committee (CSISC)http://www.csisc.cnFull memberWM Datenservice
TWChinese Taiwan Stock Exchange Corporation (TWSE) memberWM Datenservice
CXChristmas Island Non-MemberWM Datenservice
XSClearstream• Investment Funds:
• Other Instruments:
Clearstream Banking S.A.http://www.clearstream.comFull memberClearstream Banking S.A.
CCCocos (Keeling) Islands Non-MemberSIX Financial Information Ltd
COColombiaDepósito Centralizado de Valores de Colombia - DECEVAL S.A. memberCUSIP Global Services
KMComoros Non-MemberWM Datenservice
CGCongoNon-MemberWM Datenservice
CDCongo, The Democratic Republic of theBanque Centrale du Congohttp://www.bcc.cdPartnerWM Datenservice
CKCook Islands Non-MemberSIX Financial Information Ltd
CRCosta RicaInterClear Central de Valores S.Ahttp://www.interclearcr.comFull memberCUSIP Global Services
CICôte d'Ivoire and UEMOA countriesdg@dcbruemoa.orgRegional Central Depository / Settlement Bank of WAEMU - UEMOAunder constructionFull memberWM Datenservice
HRCroatiaCentral Depository and Clearing Company Inc. of Croatiahttp://www.skdd.hrFull memberWM Datenservice
CUCuba Non-MemberSIX Financial Information Ltd
CWCuracaoinfo@dcsx.cwDutch Caribbean Securities Exchange N.V. (DCSX)http://www.dcsx.cwPartnerCUSIP Global Services Cyprus Stock Exchange (CSE) memberWM Datenservice
CZCzech Republiccdcp@cdcp.czCentrální depozitář cenných papírů, a.s. - Central Securities Depository Full memberWM Datenservice
DKDenmarkvp_csdservices@euronext.comEURONEXT SECURITIES Full memberWM Datenservice
DJDjibouti Non-MemberWM Datenservice
DMDominica Non-MemberCUSIP Global Services
DODominican Republicinfo@cevaldom.comCEVALDOMhttp://www.cevaldom.comFull memberCUSIP Global Services Depósito Centralizado de Compensación y Liquidación de Valores - DECEVALE S.A. http://www.decevale.comPartnerCUSIP Global Services
EGEgyptMCDR (Misr for Central Clearing, Depository and Registry) memberWM Datenservice
SVEl Salvadorcedeval@cedeval.comCentral Depósito de Valores S.A. de C.V. - CEDEVALhttp://www.cedeval.comPartnerCUSIP Global Services
GQEquatorial GuineaNon-MemberWM Datenservice
EREritrea Non-MemberWM Datenservice
EEEstoniacsd@nasdaq.comNasdaq CSD SE acting also as numbering agency on behalf of Estonia, Iceland and LithuaniaNon-MemberWM Datenservice Stock Exchange memberWM Datenservice
ETEthiopia Non-MemberWM Datenservice
XSEuroclearNewissues.clientservice@euroclear.comEuroclear Bank SA/NVhttp://www.euroclear.comFull memberEuroclear
FKFalkland Islands (Malvinas) Non-MemberSIX Financial Information Ltd
FOFaroe IslandsVP SECURITIES A/SNon-MemberWM Datenservice
FJFiji Non-MemberSIX Financial Information Ltd
FIFinlanddebt.finland@euroclear.euEuroclear Finland Ltd. memberWM Datenservice
FRFranceef.newissues@euroclear.comEuroclear Francehttp://www.euroclear.comFull memberWM Datenservice
GFFrench Guiana Non-MemberWM Datenservice
PFFrench Polynesia Non-MemberWM Datenservice
TFFrench Southern Territories Non-MemberWM Datenservice
GAGabonNon-MemberWM Datenservice
GMGambia Non-MemberWM Datenservice Bank of Georgia (NBG) - Central Bank of Georgia memberWM Datenservice
DEGermanyhelpdesk@wmdaten.comWM Datenservicehttp://www.wmdaten.comFull memberWM Datenservice Stock Exchange memberWM Datenservice
GIGibraltar Non-MemberWM Datenservice
GRGreeceisin@athexgroup.grHellenic Central Securities Depositary, S.A.http://www.athexgroup.grFull memberSIX Financial Information Ltd
GLGreenlandVP SECURITIES A/SNon-MemberWM Datenservice
GDGrenada Non-MemberCUSIP Global Services
GPGuadeloupe Non-MemberWM Datenservice
GUGuam Non-MemberWM Datenservice
GTGuatemalaBolsa de Valores Nacional, S.A. memberWM Datenservice
GGGuernseyLondon Stock ExchangeNon-MemberWM Datenservice
GNGuinea Non-MemberWM Datenservice
GWGuinea-BissauUEMOA c/o Bourse Régionale des Valeurs Mobilières - Afrique de l'Ouest Regional Stock Exchange - West AfricaNon-MemberWM Datenservice
GYGuyana Non-MemberCUSIP Global Services
HTHaiti Non-MemberCUSIP Global Services
HMHeard and McDonald Islands Non-MemberSIX Financial Information Ltd
VAHoly See (Vatican City State) Non-MemberWM Datenservice
HNHondurasComisión Nacional de Bancos y Seguroshttp://www.cnbs.gob.hnPartnerCUSIP Global Services
HKHong Kong Exchanges and Clearing Ltd memberWM Datenservice
HUHungaryhuisin@keler.huKELER Ltd.http://www.keler.huFull memberWM Datenservice
ISIcelandcsd@nasdaq.comNasdaq CSD SE acting also as numbering agency on behalf of Estonia, Iceland and LithuaniaNon-MemberWM Datenservice
INIndiaSecurities and Exchange Board of India memberWM Datenservice
IN India GIFT International Depository IFSC Ltd. Datenservice Kustodian Sentral Efek Indonesia
(KSEI - Indonesian Central Securities Depository) memberWM Datenservice
IRIran, Islamic Republic ofTehran Securities Exchange Technology Management Companyhttp://www.tsetmc.comFull memberWM Datenservice
IQIraq Non-MemberWM Datenservice
IEIrelandISINqueries@euronext.comThe Irish Stock Exchange trading as Euronexthttp://www.ise.ieFull memberWM Datenservice
IMIsle of ManLondon Stock ExchangeNon-MemberWM Datenservice
ILIsraelThe Tel Aviv Stock Exchange memberWM Datenservice
ITItalyRES.ISIN@bancaditalia.itBanca d´Italiahttp://www.bancaditalia.itFull memberWM Datenservice
JMJamaica Jamaica Stock Exchangehttp://www.jamstockex.comPartnerCUSIP Global Services Stock Exchange, Inc. memberWM Datenservice
JEJerseyLondon Stock ExchangeNon-MemberWM Datenservice Depository Center of Jordan memberWM Datenservice
KZKazakhstanodd@kacd.kzCentral Securities Depository Joint-stock Companyhttp://www.kacd.kzFull memberWM Datenservice
KEKenya dataservices@NSE.CO.KENairobi Securities Exchange Plc. Datenservice
KIKiribati Non-MemberSIX Financial Information Ltd
KPKorea, Democratic People's Republic of Non-MemberWM Datenservice
KRKorea, Republic Exchange - KRX memberWM Datenservice Kuwait Clearing Company K.S.C.http://www.maqasa.comFull memberWM Datenservice
KGKyrgyzstan Non-MemberWM Datenservice
LALao People's Democratic Republic Non-MemberWM Datenservice
LVLatviacsd@nasdaq.comNasdaq CSD SE acting also as numbering agency on behalf of Estonia, Iceland and Lithuania memberWM Datenservice S.A.L. memberWM Datenservice
LSLesotho Non-MemberWM Datenservice
LRLiberia Non-MemberWM Datenservice
LYLibya Non-MemberWM Datenservice
LILiechtenstein Non-MemberSIX Financial Information Ltd
LTLithuaniacsd@nasdaq.comNasdaq CSD SE acting also as numbering agency on behalf of Estonia, Iceland and LithuaniaNon-MemberWM Datenservice
LULuxembourgClearstream Banking S.A. Full memberSIX Financial Information Ltd Authority of Macao Datenservice
MGMadagascar Non-MemberWM Datenservice
MWMalawi Non-MemberWM Datenservice
MYMalaysiaBursa Malaysia Full memberWM Datenservice
MVMaldivesMaldives Securities Depository Company Pvt Ltdhttp://www.depository.mvPartnerWM Datenservice
MLMaliUEMOA c/o Bourse Régionale des Valeurs Mobilières - Afrique de l'Ouest
Regional Stock Exchange - West Africa
Non-MemberWM Datenservice Stock Exchange PLC memberWM Datenservice
MHMarshall Islands Non-MemberCUSIP Global Services
MQMartinique Non-MemberWM Datenservice
MRMauritania Non-MemberWM Datenservice
MUMauritiusThe Financial Services Commission, Mauritiushttp://www.fscmauritius.orgFull memberWM Datenservice
YTMayotte Non-MemberCUSIP Global Services Indeval SA de CV memberCUSIP Global Services
FMMicronesia, Federated States of Non-MemberCUSIP Global Services
MDMoldova, Republic of Non-MemberWM Datenservice
MCMonacoEuroclear FranceNon-MemberWM Datenservice Central Securities Depository Co., Ltd.http://www.mcsd.mnFull memberWM Datenservice
MEMontenegroinfo@ckdd.meCentral Securities Depository and Clearing Company of Montenegro (short CSD&CC – Montenegro)http://www.ckdd.meFull memberWM Datenservice
MSMontserrat Non-MemberWM Datenservice
MAMoroccosupport@maroclear.comMAROCLEAR S.A. memberWM Datenservice de Valores de Moçambique memberWM Datenservice
MMMyanmar Non-MemberWM Datenservice
NANamibia Non-MemberWM Datenservice
NRNauru Non-MemberSIX Financial Information Ltd
NPNepalCDS and Clearing Limitedhttp://www.cdscnp.comFull memberWM Datenservice Euroclear Nederlandhttp://www.euroclear.comFull memberSIX Financial Information Ltd
NCNew Caledonia Non-MemberWM Datenservice
NZNew Zealand Non-MemberWM Datenservice
NINicaraguainfocenival@cenival.comCentral Nicaraguense de Valores, S.A. (CENIVAL) Global Services
NENigerUEMOA c/o Bourse Régionale des Valeurs Mobilières - Afrique de l'Ouest
Regional Stock Exchange - West Africa
Non-MemberWM Datenservice
NGNigeriainfo@cscs.ngCentral Securities Clearing System Plc.http://www.cscs.ngFull memberWM Datenservice
NUNiue Non-MemberSIX Financial Information Ltd
NFNorfolk Island Non-MemberWM Datenservice
MKNorth Macedoniacdhv@cdhv.mkCentralen depozitar za hartii od vrednost AD Skopje / Central Securities Depository AD Skopjehttp://www.cdhv.mkFull memberWM Datenservice
MPNorthern Mariana Islands Non-MemberCUSIP Global Services
NONorwaykunde@euronext.comVerdipapirsentralen (VPS) ASA Full memberWM Datenservice
OMOmanMuscat Clearing & Depository (S.A.O.C.) memberWM Datenservice
PKPakistaninfo@cdcpak.comCentral Depository Company of Pakistan Ltdhttp://www.cdcpakistan.comFull memberWM Datenservice
PWPalau Non-MemberCUSIP Global Services
PSPalestinePalestine Exchange (PEX)http://www.pex.psFull memberWM Datenservice
PAPanamaBolsa Latinoamericana de Valores, S.A. (Latinex)http://www.latinexbolsa.comFull memberCUSIP Global Services
PGPapua New PNGX Markets Limited Datenservice de Valores y Productos Asunción S.A. memberCUSIP Global Services de Valores de Lima S.A. Full memberCUSIP Global Services and Exchange Commission Global Services
PNPitcairn Non-MemberSIX Financial Information Ltd
PLPolandkdpw@kdpw.plKrajowy Depozyt Papierów Wartościowych SA (KDPW SA)http://www.kdpw.plFull memberWM Datenservice
PTPortugalisin@euronext.comInterbolsa - Sociedade Gestora de Sistemas de Liquidação e de Sistemas Centralizados de Valores Mobiliários, S.A.http://www.interbolsa.ptFull memberWM Datenservice
PRPuerto Rico Non-MemberCUSIP Global Services Financial Markets Authority memberWM Datenservice
RERéunion Non-MemberWM Datenservice
RORomaniasettlement@roclear.roDepozitarul Central S.A. (Romanian Central Depository)http://www.roclear.euFull memberWM Datenservice
RURussiaNational Settlement Depository (NSD), a part of the Moscow Exchange Group suspendedWM Datenservice
RWRwanda Non-MemberWM Datenservice
BLSaint Barthélemy Non-MemberCUSIP Global Services
SHSaint Helena, Ascension and Tristan da Cunha Non-MemberSIX Financial Information Ltd
KNSaint Kitts and Nevis Non-MemberCUSIP Global Services
LCSaint Lucia Non-MemberCUSIP Global Services
MFSaint Martin (French part) Non-MemberCUSIP Global Services
PMSaint Pierre and Miquelon Non-MemberWM Datenservice
VCSaint Vincent and the Grenadines Non-MemberCUSIP Global Services
WSSamoa Non-MemberSIX Financial Information Ltd
SMSan Marino Non-MemberWM Datenservice
STSao Tome and Principe Non-MemberWM Datenservice
SASaudi Arabiacc@edaa.saSecurities Depository Center Company (“Edaa”)http://www.edaa.saFull memberWM Datenservice
SNSenegalUEMOA c/o Bourse Régionale des Valeurs Mobilières - Afrique de l'Ouest
Regional Stock Exchange - West Africa
Non-MemberWM Datenservice
RSSerbiaoffice@crhov.rsCentral Securities Depository and Clearing House of Serbiahttp://www.crhov.rsFull memberWM Datenservice
SCSeychellessupport@merj.exchangeMERJ Exchange Limitedhttp://www.merj.exchangeFull memberWM Datenservice
SLSierra Leone Non-MemberWM Datenservice
SGSingaporeissuerservices.ops@sgx.comSingapore Exchange Limited Full memberWM Datenservice
SXSint Maarten (Dutch part) Non-MemberCUSIP Global Services
SKSlovakiacdcp@cdcp.skCentrálny depozitár cenných papierov SR, a.s. Full memberWM Datenservice
SISloveniainfo@kdd.siKDD Central Securities Clearing Corporation Full memberWM Datenservice
SBSolomon Islands Non-MemberWM Datenservice
SOSomalia Non-MemberWM Datenservice
ZASouth Ltd Full memberWM Datenservice
GSSouth Georgia and the South Sandwich Islands Non-MemberCUSIP Global Services
SSSouth Sudan Non-MemberWM Datenservice
ESSpainancv@cnmv.esComisión Nacional del Mercado de Valores (CNMV) Full memberWM Datenservice
LKSri LankaColombo Stock Exchangehttp://www.cse.lkFull memberWM Datenservice
SDSudan Non-MemberWM Datenservice
SRSurinam Non-MemberCUSIP Global Services
SJSvalbard and Jan MayenVP SECURITIES A/SNon-MemberWM Datenservice
SESwedenEuroclear Sweden AB http://www.euroclear.euFull memberWM Datenservice
CHSwitzerlandasbsupport@six-financial-information.comSIX Financial Information Ltdhttp://www.six-financial-information.comFull memberSIX Financial Information Ltd
SYSyriaceo@dse.syDamascus Securities Exchangehttp://www.dse.syPartnerWM Datenservice CJSC "Central Depository"http://www.csd.tjFull memberWM Datenservice
TZTanzania & Registry Company Limited Datenservice
THThailandISINThailand@set.or.thThailand Securities Depository Co., Ltd memberWM Datenservice
TLTimor-Leste Non-MemberWM Datenservice
TGTogoUEMOA c/o Bourse Régionale des Valeurs Mobilières - Afrique de l'Ouest
Regional Stock Exchange - West Africa
Non-MemberWM Datenservice
TKTokelau Non-MemberSIX Financial Information Ltd
TOTonga Non-MemberSIX Financial Information Ltd
TTTrinidad and Tobago Non-MemberCUSIP Global Services Tunisie Clearinghttp://www.tunisieclearing.comFull memberWM Datenservice Istanbul Takas ve Saklama Bankası A.S.- Takasbank memberWM Datenservice
TMTurkmenistan Non-MemberWM Datenservice
TCTurks and Caicos Islands Non-MemberSIX Financial Information Ltd
TVTuvalu Non-MemberSIX Financial Information Ltd
UGUgandadepository@use.or.ugUganda Securities Exchangehttp://www.use.or.ugFull memberWM Datenservice
UAUkrainePublic Joint-Stock Company “National Depository of Ukraine”http://www.csd.uaFull memberWM Datenservice
AEUnited Arab Emiratesdepository@adx.aeSecurities & Commodities Authority - ESCA memberWM Datenservice
AEUnited Arab Emirates - Nasdaq Dubai Ltd.http://www.nasdaqdubai.comPartnerWM Datenservice
GBUnited Kingdomisinrequests@lseg.comLondon Stock Exchange Plc memberWM Datenservice
UMUnited States Minor Outlying Islands Non-MemberCUSIP Global Services
UYUruguaydcv@bcu.gub.uyBanco Central del Uruguayhttp://www.bcu.gub.uyFull memberCUSIP Global Services
USUSAasb_support@cusip.comCUSIP Global Services operated by FactSet Research Systems Inc. Full memberCUSIP Global Services"Central Securities Depository" JSChttp://www.uzcsd.uzFull memberWM Datenservice
VUVanuatu Non-MemberWM Datenservice
VEVenezuelamercados@bolsadecaracas.comBolsa de Valores de Caracas, C.A.http://www.caracasstock.comFull member CUSIP Global Services
VNVietnamViet Nam Securities Depository and Clearing Corporation (VSDC)http://www.vsd.vnFull memberWM Datenservice
VGVirgin Islands (British) Non-MemberCUSIP Global Services
VIVirgin Islands (US) Non-MemberCUSIP Global Services
WFWallis and Futuna Non-MemberWM Datenservice
EHWestern Sahara Non-MemberWM Datenservice
YEYemen Non-MemberWM Datenservice Stock Exchange Plc. Datenservice
ZWZimbabweZimbabwe Stock Exchange Datenservice

Membership Levels

ANNA has two levels of membership for National Numbering Agencies:

  1. Full members are NNAs that have been operational for two years as partner members of ANNA, and are voted in by the ANNA membership;
  2. ANNA partners are NNAs that are operational NNAs waiting for partnership eligibility and NNAs that are working to become fully operational.

The following countries have signed an ANNA partnership agreement. For more information on becoming a member, please email

•    Algeria (Central Securities Depository – CSD)
•    Botswana (Stock Exchange)
•    Congo, Democratic Republic (Central Bank)
•    Curacao (Stock Exchange)
•    Ecuador (CSD)
•    El Salvador (CSD)
•    Ghana (Stock Exchange)
•    Honduras (Banking Commission)
•    India – GIFT IFSC Ltd. (CSD)
•    Jamaica (Stock Exchange)
•    Kenya (Stock Exchange)
•    Macao (Regulator)
•    Maldives (CSD)
•    Nicaragua (Central Bank)
•    Papua New Guinea (Stock Exchange)
•    Philippines (Regulator)
•    Syria (Stock Exchange)
•    Tanzania (CSD)
•    United Arab Emirates – DIFC (Stock Exchange)
•    Zambia (Stock Exchange)

Contact details for all Partners are available under “Numbering Agencies”.

Working Groups

ANNA works with the industry to continuously develop and promote standards in-line with industry needs and market evolution.

ANNA’s work with industry is primarily conducted through permanent Working Groups (WG) focused on strategic matters, and Task Forces (TF) that present results to the ANNA General Meeting within a limited period.

Working Groups

WG1 (Assisting Markets)
Primarily, assistance is given to the applicants of ANNA membership and partnership in all ANNA related matters as well as to new members and partners. Members of this WG are representatives of the four Substitute Numbering Agencies (CUSIP Global Services, SIX Financial Information, WM Datenservice and National Settlement Depository Russia).

WG2 (ISIN Quality and Guidelines)
This Working Group is focused on topics related to the guidance on ISIN allocation. The WG is also in charge of the periodical review of the ISIN allocation rules. All members are invited to contact the WG if they have basic questions/problems with regards to ISIN allocation. The WG has already developed several versions of the ISIN Guidelines that are provided through the ANNA website.

WG2 Subgroup (Digital Assets)
This Working Group is focused on topics related to the guidance on ISIN allocation for digital assets, in particular to the implementation of recommendations drafted by the Taskforce-TF22 (Technology) on digital tokens that are financial or referential instruments. The group is also responsible for concentrating on the distinct subject matter of digital tokens with regards to WG2 activities.

The ANNA ISIN:LEI Working Group (WG6) is responsible for reviewing matters related to the provision of an ISIN-LEI Link by the ANNA Services Bureau to the Global Legal Entity Identifier Foundation (GLEIF). Set up as part of a cooperation established between ANNA and GLEIF in September 2018, the group serves as a forum for addressing practical questions around the ISIN-LEI Link and the creation and maintenance of the ISIN:LEI Link according to the Operational Protocol which should be followed by ANNA Members in the technical implementation and daily operations.

Task Forces

TF 21 (Benchmarks)
The focus of this newly formed task force is on improving coverage and data quality of ISINs for benchmarks. Benchmark Administrators interested to participate and contribute to this Task Force should contact the ANNA Secretariat at

Regional Groups

ANNA Regional Groups share, coordinate and discuss topics of regional interest and assist potential ANNA members and partners. They report to the ANNA membership on the results of their meetings in regular intervals.

  • ALARG (ANNA Latin American Regional Group)
  • APARG (Asian Pacific Regional Group – East and West)
  • AMERG (African and Middle East Regional Group)


  • AECSD (Association of Eurasian Central Securities Depositories)
  • AMEDA (African and Middle East Depositories Association)

Meet Our Members

Korea Exchange
Johannesburg Stock Exchange:
Johannesburg Stock Exchange:
CNMV Madrid

ANNA Members: National Numbering Agencies (NNAs)

At the heart of ANNA are the member National Numbering Agencies (NNAs), responsible for ISIN, FISN and CFI assignment and maintenance. NNAs, appointed by their respective national financial regulator, are the central point for knowledge in their jurisdictions and are able to assist their local communities and help elevate any local challenges or concerns to the international level. 

Once NNAs have assigned the identifiers and their associated data, ANNA works to consolidate the global data set via a centralised depository, the ANNA Service Bureau (ASB), to maintain data quality and build global interoperability.

What the NNAs do

  • Collect registration data including issuer information, type of instrument, its terms, and countries where it will be traded
  • Assign an ISIN and a CFI to the instrument
  • Gather additional financial identifiers from other sources to enrich the identification of the instrument
  • Contribute identifiers, data and updates to the global database maintained by the ASB
  • Validate registration data and maintain its accuracy over time
  • Provide ISINs and CFIs to users on request
  • Serve as Substitute Numbering Agencies, assigning ISINs and CFIs for nations that do not yet have National Numbering Agencies
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