Sinabung, Agung and Dukono are rumbling all the time. At the moment only Dukono has a sigmet, see below. The FL in that sigmet of 070 is the usual level, but with some recent spikes to 160/180. A recent hickup of Agung caused cancellations of a few hundred flights for a few days. You can find posts on that in the rumors list.
WVID21 WAAA 291304
WAAZ SIGMET 15 VALID 291305/291900 WAAA-WAAZ UJUNG PANDANG FIR VA ERUPTION MT DUKONO PSN N0141 E12753
VA CLD OBS AT 1300Z WI N0136 E12823 - N0155 E12817 - N0142 E12752 -N0140 E12752 - N0136
E12823 SFC/FL070 MOV E 10KT
FCST 1900Z VA CLD APRX N0134 E12825 - N0206 E12819 - N0142 E12752 -N0140 E12752 - N0134 E12825 SFC/FL070=