Welcome to IPFS, matyapiro31! be.libre looks cool.
Hopefully somebody will be able to help you with your question.
AFAIK, go-ipfs resolves DNS using Go’s
DefaultResolver (https://godoc.org/net#hdr-Name_Resolution). That should resolve using whatever your system is used to resolve.
IPFS public gateways etc are not configured to resolve using OpenNIC though.