[Freeswitch-users] RegEx Help

I **think** that the following will match any three character strings from 1xx to 399 I want to exclude 100 though, can anyone help me with the required RegEx please ? ^([1-3][0-9][0-9])$ I could (I think) do ^([1-3][1-9][0-9]|[2-3][0-9][0-9])$ But it does not "feel" elegant - is there a better way ? regards Dave