Dingtalk virtual numbers for SMS verification

How a Dingtalk number behaves in the wild

A Dingtalk number is in stock in 4 countries right now, 236K lines in total, and the entry price is $0.07 in United Kingdom. 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.

If Dingtalk answers that the number is already registered, the line has been through it before. Networks recycle their ranges and a recycled line can still carry somebody's abandoned account. Release it and take another: the hold comes back in full, and it is a faster route than anything you can do inside the app.