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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 December 5, 2016, 929 Vendor IDs have been issued and are distributed internationally as shown in the following list:
 
USA331
Germany112
Canada71
Japan61
United Kingdom36
China31
Switzerland30
Australia28
Poland22
Italy22
Korea21
Taiwan17
France14
Denmark14
Sweden13
Austria12
Netherlands11
India11
Hong Kong10
Czech Republic9
Belgium8
Finland7
Malaysia5
Brazil5
South Africa5
Israel4
Singapore3
Spain3
Turkey3
Croatia2
Ireland2
Luxembourg2
Slovakia2
New Zealand2
Serbia2
Vietnam2
Hungary2
Lithuania2
Argentina1
Estonia1
Iceland1
Latvia1
Mexico1
Norway1
Romania1
Russia1

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