Block from U+10A80 to U+10A9F. This block was introduced in Unicode version 7.0 (2014). It contains 32 codepoints.
The Wikipedia provides the following information on block Old North Arabian:
Old North Arabian is a Unicode block containing characters for writing the Ancient North Arabian language.
Note that U+10A9D OLD NORTH ARABIAN NUMBER ONE (𐪝) represents both the numeral one and a word divider.