nim

nim:shp

Presumably Network Time Sync?

https://sun.hac.%%.d4c.nintendo.net/v1/system_update_meta?device_id=%016llx
...
https://aqua.hac.%%.d4c.nintendo.net/required_system_update_meta?device_id=%016llx
https://%s.hac.%%.d4c.nintendo.net/t/%c/%016llx/%u?device_id=%016llx
https://%s.hac.%%.d4c.nintendo.net/c/%c/%s
https://aauth-%.ndas.srv.nintendo.net/v1/time
...

These are not accessible without the required TLS client cert+privk, minus the time URL which can be accessed without any client cert+privk at all.