I see. So if the unmarried father happens to be out of Thailand when the birth of his child is registered at the amphur there is no possibility later to get a legal confirmation of his fatherhood status at the amphur but he has to get that confirmation document from a court. Makes sense, in a way.

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Maestro

I think that a person should still go to immigration with the birth certificate they have and try to get the extension without going to the amphoe or through the court first. I have seen enough reports that show that not all immigration offfices want this additional step. Bangkok for one does these extensions on a regular bassis.

It looks that way. Maybe it is possible by power of atorny, but i doubt it. If some one wants to be sure, contact a lawyer.