WRKACTJOB won't show an IP address.
You can see remote IP addresses for connections by running NETSTAT *CNN. It doesn't show job names directly, but any connection can show the job name by entering option 8=Display jobs. Also, you can press [F15]=Subset to limit the list only to port 23, for example, for telnet.
A telnet job will be associated with a terminal device name. The name of the job will be the same as the name of the device. For terminal devices in use by telnet, you can run DSPDEVD [jobname] to see the IP address that is in use by that device. I.e., if the jobname is QPADEV0001, then run DSPDEVD QPADEV0001.
Tom