Mobile proxies are suitable for VKontakte, as they provide high anonymity and good speed. I recommend choosing a proxy with servers in Russia.

Choose GEO: Russia

Here's my personal top proxy picks.

Mobile proxies:

I recommend buying Russian mobile proxies from Mobile Proxy Space - at the moment this is the best budget provider of high-quality mobile proxies from Russia (there may be problems with paying for them).

For other GEOs: Soax, ShopProxy.

IPv4 proxies:

For IPv4 it's advisable to buy individual ones to avoid blocks. You can purchase from Proxys.io (highly recommended!), Proxy6, Proxymania.

IPv6 proxies:

I get IPv6 proxies from Proxyline and Proxys.io.

Residential proxies:

Residential can be purchased from Shifter, Proxys and Proxy Sale.

Additionally, I recommend using promo codes, which can be found here. If you still have questions about which proxies are suitable for VKontakte, feel free to write, and I'll answer if possible.