I've never seen a legit south east asian provider in Sudbury, and I'm hesitant to visit any of the ads in Sudbury that do advertise as all of them are for extremely young women around 19 years of age.
For me, age 19 to 21 is a huge red flag for me (even younger than 25).
As for the other two, the very first red flag is the fact that the phone #'s are either Whatsapp or Telegram. Any provider offering their servies through Telegram at the very least are 110% fake. And any add that seems too good to be true, is almost certainly fake as well.
I always skip or move on if the ad has the following type of communication:
Whatsapp
Snapchat
Onlyfans
Telegram
I tried one who started off as a text then moved to SC and I found out (the hard financial way) that they were fake.
Also, I steer clear of anyone who demands a deposit, even if it's $10 or something like that.
TL/DR: Two out of the three are for sure fake (the two with Telegram phone #s) and the east Indian one is likely fake, or a bait and switch.