Which HMC is controlling my LPAR?

To figure out which HMC is controlling a particular LPAR.

Login to a LPAR and use either of commads

$ /usr/sbin/rsct/bin/rmcdomainstatus -s ctrmc

I a 0x3b7a655c73b1d930 0001 XX.XX.XX.XX ( Where XX.XX.XX.XX is the IP address of HMC).

or

$lsrsrc IBM.ManagementServer

Resource Persistent Attributes for IBM.ManagementServer

resource 1:

Name = 'XX.XX.XX.XX"

Hostname = "XX.XX.XX.XX"

ManagerType = "HMC"

LocalHostname = "lparname"

ClusterTM = "9078-160"

ClusterSNum = ""

ActivePeerDomain = ""