Since we no longer are sure where these 5 places are, it's forbidden to use a razor to shave any part of one's beard.
One who shaves his beard with a razor or knife has transgressed 5 times.
Trimming or cutting one's beard with scissors is permitted.
Applies to men, everywhere, always.
Verse: "...and do not destroy the corners of your beard" (Vayikra 19:27)
Source: The Chafetz-Chaim's Sefer haMitzvot haKatzar; Prohibition 177
Monday, 17 Marcheshvan 5771