Last Modified: 2014-11-26 Approved: Yes

Name: Central Address Resolution

Type: / View

Assigned Number: 0x2AA6


The information contained on this web page is informative.

Informative means that the text may provide background or context to the authoritative text contained in the adopted Bluetooth specification. Informative text is not considered when determining compliance to the Bluetooth specification. Please refer to the adopted Bluetooth specification for the normative (i.e. authoritative) text used to establish compliance. Compliance issues due to errors on this web page are not the responsibility of the Bluetooth SIG and rest solely with the member.


The Peripheral checks if the peer device supports address resolution by reading the Central Address Resolution characteristic before using directed advertisement where the initiator address is set to a Resolvable Private Address (RPA).

Value Fields

Names Field Requirement Format Minimum Value Maximum Value Additional Information
Central Address Resolution Support
uint8 N/A N/A
Key Value
0 address resolution is not supported in this device
1 address resolution is supported in this device
2 - 255 Reserved for future use


A device has only one instance of the Central Address Resolution characteristic. If the Central Address Resolution characteristic is not present, then it is assumed that Central Address Resolution is not supported.