Starting Nmap 7.60 ( https://nmap.org ) at 2017-12-05 11:26 EST
Nmap scan report for house.router.nick (192.168.1.1)


Host is up (0.00059s latency).
Not shown: 995 closed ports
PORT     STATE SERVICE
22/tcp   open  ssh
53/tcp   open  domain
427/tcp  open  svrloc
1900/tcp open  upnp

MAC Address: 50:C7:BF:A8:CF:C8 (Tp-link Technologies)


Nmap scan report for 192.168.1.2


Host is up (0.00034s latency).
Not shown: 996 closed ports
PORT      STATE SERVICE
22/tcp    open  ssh
80/tcp    open  http
139/tcp   open  netbios-ssn
445/tcp   open  microsoft-ds

MAC Address: 48:F8:B3:C9:AE:BB (Cisco-Linksys)

22/ssh
====
192.168.1.1
192.168.1.2

grep -E "tcp.*open" nmap.txt | awk '{ print $3 }' | sort | uniq