Many trusted domains

in my /config.php file I have all these trusted domains domains
0 => ‘localhost’,
3 => ‘raspberrypi’,
5 => ‘nextcloudpi.local’,
6 => ‘nextcloudpi’,
7 => ‘nextcloudpi.lan’,

is this normal?

Can I delete it?

yes, they make connecting for the first time easier.

Once a domain is set up, yes, but it doesn’t hurt to leave them either.

merci beaucoup de votre réponse