Taxonomy in Metaphlan


I absolutely new in Metaphlan processing.

First I went to tutorial of Metaphlan3 metaphlan3 · biobakery/biobakery Wiki · GitHub. In examples of output profiles I saw information that tax_ID obtainded from NCBI. Then I checked tax from example

k__Bacteria|p__Actinobacteria|c__Actinobacteria|o__Micrococcales|f__Micrococcaceae|g__Rothia|s__Rothia_dentocariosa     2|201174|1760|85006|1268|32207|2047

And if I we will check ID 1760 (Id of class in example) in NCBI Taxonomy browser (Actinomycetia) — we will get Actinomycetia but in example above there are Actinobacteria class.

So is that true that NCBI taxonomy is used? If it is not - which taxonomy used in metaphlan?