Keysight N1911A Programming Manual page 503

Query Example
SYST:COMM:LAN:ADDR?
Remark
If the paramater value is more than 255, error –232 "Invalid format" occurs.
N1911A/1912A P-Series Power Meters Programming Guide
This command queries the setting of the LAN
IP address.
SYSTem Subsystem 12
503