163som virtual numbers for SMS verification

Buying a 163som number, in practice

A 163som number is in stock in 22 countries right now, 578K lines in total, and the entry price is $0.08 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.

Sorting by price and taking the cheapest of the 22 countries is the most common way to spend more than you meant to. Cheap tracks abundance, and abundance usually tracks the places a platform has already learned to distrust. The top of the table is ordered by what delivers rather than by price alone, which is why it is the sensible place to start even when something further down is a few cents less.

If 163som 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.