What outbound connection does the Router does besides DNS?

Hello All, As the title, would you be able to tell me what outbound connections would mikrotik does? as fas as i know, i expect DNS (UDP 53), DHCP to ISP.

I’m actually not expecting port 80. I’m trying to account what this outbound to port 80 does. I’m not running any upgrade package or anything like that.

my ip is 119.94.xxx.xxx

There are some other: cloud service, internet discovery.
But you do have full control over the outgoing connections: block whatever you don’t like in output chain.