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Lists for the mapping of former company numbers with business registration numbers for companies or entities registered before 27 December 2023

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Following the full implementation of Unique Business Identifier (“UBI”) on 27 December 2023, Business Registration Number (“BRN”) (i.e. the first eight digits of the Business Registration Certificate number) assigned by the Business Registration Office of the Inland Revenue Department has already been adopted as the identification number for all companies / entities under the administration of the Registrar of Companies replacing the former Company Registration Number (“former CR No.”).

After the implementation of UBI, BRN is adopted as the “No.” on the “Certificate of Incorporation”, “Certificate of Registration”, or “Certificate of Change of Name” (collectively “Certificates”) issued by the Registry. For companies / entities incorporated or registered before the implementation of UBI, Certificates will not be re-issued for replacing the existing ones.

Members of the public may look up the corresponding BRN of a company / entity by the former CR No. and vice versa by using the “Quick Search > CR No. / BRN Mapping” function provided under the e-Search Services of the Registry’s e-Services Portal.

Lists for the mapping of former CR No. with BRN for all the companies / entities incorporated or registered before the implementation of UBI are also provided on this webpage for easy reference.

Local Companies

XLSX files:
Download file - Companies with CR No. 1 to 1048001
Download file - Companies with CR No. 1048002 to 2096002
Download file - Companies with CR No. 2096003 to 3144003
Download file - Companies with CR No. 3144004 to 3352767

CSV file:
Download file

Non-Hong Kong Companies

XLSX file:
Download file

CSV file:
Download file

Other Entities

XLSX file:

Download file

CSV file:
Download file

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