The following ANAB-accredited certification bodies have completed the ISO/IEC 27006:2015-AMD 1:2020 transition. Additional information can be found in Heads Up 462:

Cadence Assurance LLC 2021/02/24
Certification Association "Russian Register" 2021/04/11
EQA 2021/02/24
SRI Quality System Registrar 2021/04/01