How to organize a service for the sale of virtual numbers?

Question

SMS

Hello. Interested in the technical side of solving the issue of organizing a service for the sale of virtual numbers. Let's take the site "onlinesim ru" (not advertising) as an example.
Where do the virtual numbers of Russian operators (CIS operators) come from in such a volume?
All the pitfalls and technical issues are interesting.
Thanks for answers.

Answer 1

We buy 100500 sim cards, insert them into boxes like this

Answer 2

All the pitfalls and technical issues are interesting.

yeah, now I’ll just finish the business plan and upload it right away.
Numbers are bought from providers (beeline, rostelecom, megaphone, etc. - the primary sources of ALL numbers) and ... are resold.
Naturally, the price is lower for larger volumes.
If you buy 1-2-3 thousand numbers, the price will be at the level of competitors, i.e. at best, you will sell at zero, or more expensive.

Answer 3

For example, there is even the concept of an entire "virtual operator".
From 50 thousand numbers - you can easily start it. And even earn.
If you can sell these 50,000 numbers.

Answer 4

Interest Ask. I know that numbers are purchased from suppliers and that's about it. I myself use virtual telephony https://hottelecom.net/virtual-number-of-russia.html and I’m probably lying if I say that I didn’t ask this question, but I didn’t manage to get to the bottom of it.