According to official documentation this is the proper time for dev in this d...
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Ilford HP5+ 400 at 3200 in Kodak HC-110 1+15
9 minutes, 30 seconds (Stand developed) at 20°C/68.0°F
Foma Fomapan 400 at 100 in Agfa Rodinal 1:50
9 minutes at 20°C/68.0°F
Foma Fomapan 100 in Photographers' Formulary Pyrocat HD
12 minutes at 20°C/68.0°F
Adox/Efke CHS 100 II in Adox FX-39 Type II 1+9
7 minutes, 30 seconds at 20°C/68.0°F