The following table is a complete listing of 16-bit Universally Unique Identifier (UUID) assignments for Standards Development Organizations (SDOs).

Organizations requesting assignment of a 16-bit UUID should submit a request for guidance on the process and documentation associated with new assignments. When submitting a request, please choose Assigned Numbers as the Category and 16 bit UUIDs for SDOs as the Subcategory.
16-bit UUID Assigned Number SDO Custom Service Custom Service Description Date Assigned by BoD
0xFFFB Thread Group, Inc. Direct Thread Commissioning The Direct Thread Commissioning (DTC) provides a secure, reliable mechanism to commission a Thread device over GATT. 13 February 2019
0xFFFC AirFuel Alliance Wireless Power Transfer (WPT) Service This Service enables coordination of wireless transfer between a wireless power transmitter and receiver. 28 February 2017
0xFFFD Fast IDentity Online Alliance Universal Second Factor Authenticator Service This Service enables relaying parties a strong cryptographic 2nd factor option for end user security. 29 June 2015
0xFFFE AirFuel Alliance (formerly Alliance for Wireless Power) Wireless Power Transfer Service This Service exposes related control and status data for proper coordination between a Power Receiving Unit and a Power Transmitting Unit. 01 October 2013