As the name implies, BASTA assigns taxonomies to sequences or groups of sequences based on the Last Common Ancestor (LCA) of a number of best hits. BASTA can be customised to run on any kind of tabular output (default = blast -outfmt 6) as long as the input file provides values for e-value, percent identity and alignment length. Taxonomies are inferred from NCBI taxonomies based on a 7 level taxonomy.