Use nmap to get list of active IP addresses on the network

[malex@thermalite ~]$ nmap -sP 192.168.1.1/24

Starting Nmap 7.60 ( https://nmap.org ) at 2019-08-03 12:03 EDT
Nmap scan report for Fios_Quantum_Gateway.fios-router.home (192.168.1.1)
Host is up (0.00059s latency).
Nmap scan report for 192.168.1.100
Host is up (0.00011s latency).
Nmap scan report for 192.168.1.114
Host is up (0.0011s latency).
Nmap scan report for localhost.fios-router.home (192.168.1.151)
Host is up (0.0010s latency).
Nmap scan report for iPhone7-Cheche.fios-router.home (192.168.1.155)
Host is up (0.012s latency).
Nmap scan report for 192.168.1.157
Host is up (0.023s latency).
Nmap scan report for 192.168.1.223
Host is up (0.0061s latency).
Nmap scan report for raspberrypi312.fios-router.home (192.168.1.229)
Host is up (0.0042s latency).
Nmap scan report for raspberrypi313.fios-router.home (192.168.1.233)
Host is up (0.0054s latency).
Nmap scan report for raspberrypi313.fios-router.home (192.168.1.234)
Host is up (0.0053s latency).
Nmap scan report for raspberrypi1.fios-router.home (192.168.1.235)
Host is up (0.0052s latency).
Nmap scan report for RE6500-391.fios-router.home (192.168.1.248)
Host is up (0.0010s latency).
Nmap scan report for raspberrypi.fios-router.home (192.168.1.249)
Host is up (0.11s latency).
Nmap scan report for raspberrypi1.fios-router.home (192.168.1.250)
Host is up (0.0015s latency).
Nmap scan report for raspberrypi312.fios-router.home (192.168.1.254)
Host is up (0.015s latency).
Nmap done: 256 IP addresses (15 hosts up) scanned in 3.85 seconds
[malex@thermalite ~]$