Csair virtual numbers for SMS verification

Buying a Csair number, in practice

A Csair number is in stock in 4 countries right now, 298K lines in total, and the entry price is $0.14 in Hong Kong. The price gap between countries is not arbitrary: it follows what the local networks charge and how often they actually deliver, which is why the table above shows both next to each other.

Price is not the only thing that separates those 4 countries. Local networks recycle their lines at different speeds, so the number of free lines moves through the day — the figures above are read at the moment you load the page, not cached from this morning. And nothing is charged until the code actually arrives, so a country that turns out not to work costs you a wait, not money.

Buy the number last. A Csair expires its own code within a couple of minutes, and the line you take is held for twenty — a number bought before you are ready has already spent part of its window waiting for you. Have the Csair sign-up open at the phone-number step first, then order.