Block from U+1BC00 to U+1BC9F. This block was introduced in Unicode version 7.0 (2014). It contains 143 codepoints.
The Wikipedia provides the following information on block Duployan:
Duployan is a Unicode block containing characters for various Duployan shorthands, including French Duployéan, Chinook Writing, Romanian shorthand, and the English Sloan-Duployan, Pernin, and Perrault shorthands. It is the first block of shorthand characters included in the Unicode Standard.