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VENDOR IDS
BACnet provides facilities by which "private," i.e., non-standard, information may be transported. In order to arbitrate between non-standard messages of different manufacturers, BACnet defines a numerical "vendor identifier." Vendor IDs are available to any BACnet implementor without cost. For details on how to obtain a Vendor ID, please click here.

Vendor identifiers 555, 666, 777, 888, 911, and 999 are reserved for ASHRAE and will not be assigned to a vendor.

As of June 16, 2016, 901 Vendor IDs have been issued and are distributed internationally as shown in the following list:
 
USA321
Germany106
Canada70
Japan59
United Kingdom34
China30
Switzerland29
Australia27
Poland22
Korea21
Italy20
Taiwan17
France14
Denmark14
Sweden13
Austria11
Netherlands11
India11
Hong Kong10
Czech Republic9
Finland7
Belgium6
Malaysia5
Brazil4
Israel4
South Africa4
Singapore3
Spain3
Turkey3
Croatia2
Ireland2
Luxembourg2
Slovakia2
New Zealand2
Serbia2
Vietnam2
Hungary2
Argentina1
Estonia1
Iceland1
Latvia1
Lithuania1
Mexico1
Norway1
Romania1
Russia1

The current list of Vendor IDs may be viewed by clicking here!