Mr

[Visitante Diogo Vasconcellos e Sá (visitante)]

My Nif is 111666111.
 

If PT-Portugal - PT999999999 - 1 block of 9 digits and if:

¹: The 1^st position following the prefix is always "U".
²: The first digit following the prefix is always zero ('0').
³: The (new) 10-digit format is the result of adding a leading zero to the (old) 9-digit format.
⁴: The first and last characters may be alpha or numeric; but they may not both be numeric.
⁵: The 10^th position following the prefix is always "B".

My number should be PTU0111666111, right?