How can I get online and list of players from my server

Here you can get a full serverlist (at least those servers that are visible in the serverlist): https://api.rising-world.net/serverlist/ But please note that there will be some minor changes to the API in presumably 2 weeks

To get specific server information, you can query a particular server through its http port (serverport-1), for example: http://119.224.64.54:4264/ (note this server uses port 4265, so the http port is 4265-1 = 4264)
This way you can also get a list of all current players on that server (example): http://119.224.64.54:4264/playerlist

The game by default uses ports 4253 thru 4258, as I purchased it last week. Any new updates on information for this?

Update:
Port is 4254 for playerlist