What is the best practice for aligning table content for text/number mix?

What is the best practice for aligning table content for text/number mix?

I know that for text/string content it should be aligned to the left and for numbers it should be aligned to the right of the column.

But what if I have a unique identification number which is something like: H2345633?

It is mostly numbers but it is not entirely number based. So how should it be aligned?