Upon arrival in Dubai, I received a message from a travel agent in VK - how did he know?

Question

In contact with

I practically don’t sit on Vkontakte, I don’t publish anything, I couldn’t expose my geolocation by my own actions - a fact! But as soon as I turned on the Internet upon arrival in Dubai, a message arrives from a local group of guides with a proposal for a vacation. I must say right away that the phone number is Thai, I flew to Dubai with roaming from Thailand, the handset was also bought in Thailand, thus. I conclude that only VK itself could "burn" me.
Question: Who knows how? Geotarget? Special kind of announcement/message?

Answer 1

Most likely the usual "Single Pixel" from VK.

Answer 2

Geotargeting has been around for a hundred years

Answer 3

socfishing.com Plenty of
similar services

Answer 4

configured retarget internal vk most likely