There are a lot of ways to use
IPv4,
IPv4 Shared and
IPv6 proxy, for example, if some sites or services are blocked in your country, then you can buy proxy of another country and bypass this lock. Here you can buy proxies of such countries as
Russia,
USA,
Ukraine,
Germany,
China,
India,
Canada,
France,
Netherlands,
Great Britain, Australia, Japan.
You can use a proxy in Key Collector to collect key phrases from WordStat from Yandex and compose a semantic kernel. The same proxy is suitable for promoting accounts in social networks - Vkontakte,
Facebook,
Youtube,
Instagram, OK.ru and placing ads on Avito or OLX.
For convenient work with accounts in social networks, you can use specialized software and services such as: Sobot, Brobot, Postmypost, Poster PRO, Lizard Program, VkJust, ViKing Botovod, SocialHammer, Smmplaner, SocialKit, Botsapp, Instap, Tooligram, and for each of them you will need individual proxy.