sudo nmap -n -PN -sT -sU -p U:28221,28223,T:28221,28223 35.1

Major@rust2:~$ sudo nmap -n -PN -sT -sU -p U:28221,28223,T:28221,28223 35.199.35.69

Starting Nmap 7.01 ( https://nmap.org ) at 2018-02-14 20:07 UTC
Nmap scan report for 35.199.35.69
Host is up (0.000030s latency).
PORT      STATE         SERVICE
28221/tcp open          unknown
28223/tcp open          unknown
28221/udp open|filtered unknown
28223/udp closed        unknown

Nmap done: 1 IP address (1 host up) scanned in 1.34 seconds