The prefix "Tir" or "TIGER" often denotes TIGER/Line Shapefiles, which are core geographic products from the U.S. Census Bureau.
While this specific filename appears in specialized data repositories, its structure suggests it belongs to one of the following two domains: 1. U.S. Census Bureau TIGER/Line Shapefiles Tir_Al_2021-09_to_2021-12.zip
The "ir" in the name may also relate to ir_datasets , a common Python library used to download and provide a uniform interface to various IR datasets for research. The prefix "Tir" or "TIGER" often denotes TIGER/Line