Where can I find a learner's certifying board ID number?

Maharashtra Building and Other Construction Worker's Welfare Board board number 1 NUMBER BOARD 7 FEET 42HOLES ; LENGTH: ; WIDTH: ; TOTAL HOLES: 42 board games online free What does the noun number board mean? There is one meaning in OED's entry for the noun number board See 'Meaning & use' for definition, usage, and quotation

board number Important Service Number ¶ Cells in Rail Bhawan, Rly No IP Intercom No MTNL Reception, 43222, 43777,