VFR
http://neige.fleurb.jmsp.net/aip/enl...0ENR%201.2.pdf table in paragraph 1.2.12 at page 7 says IAS less than or equal to 250kt below FL100.
IFR
1.3.9 Speed limitation
Unless contrary clearance within class D controlled airspace, an IFR flight applies the speed limitation specified in the table of chapter ENR 1.2 paragraph 1.2.12.
http://neige.fleurb.jmsp.net/aip/enl...0ENR%201.3.pdf