Craigslist verifies the phone number by sending a text message to your cellphone or placing a call to your land line. You must enter the verification code you receive to verify your account and continue posting your ad.
Is it OK to put your phone number on Craigslist?
But you should also be cautious of sharing your phone number on Craigslist! Automated phishing tools can easily collect your number, and scammers search specifically for this kind of information. That person can now use your phone number to harass you, and if your number is a landline, they can even locate you.
Is it safe to buy off Craigslist?
One of the most important Craigslist precautions is to be wary of scammers. In almost all cases, you are best off accepting cash for a Craigslist sale. If the transaction is for an expensive item, such as a car, meet the seller at the bank, and have them draw and deliver the cashiers check right then and there.