OKX is a centralized and regulated crypto exchange that serves 100+ countries according to their about us page. While they don't have an official list of supported countries, you can see the restricted countries on their terms of service page.
OKX says they serve 100+ countries. Source: OKX
OKX Restricted and Banned Countries
Restricted countries as of July 2023. Source: OKX
OKX has restricted lots of regions like the USA, Canada, Singapore and more. According to section 2.2 of OKX's terms of service, the following countries are prohibited from using OKX:
Restriction of Derivatives
In Hong Kong and the United Kingdom, OKX is available but the use of derivatives are prohibited. For alternatives, you can check out ApeX, a decentralized exchange with up to 30x leverage that was created by Bybit. There's also MEXC, one of the largest derivatives exchanges with 200x leverage and no KYC.
Can You Use A VPN?
Using a VPN to change your location will not work with OKX because they have a mandatory KYC policy. All users must verify their identity in order to deposit and trade on the exchange so a VPN can't bypass this.
OKX is one of the largest global crypto exchanges by trading volume. It serves millions of users in 100+ countries with 350+ coins, spot trading, 125x leverage, and lots of other Web3 features. With that in mind, these are my top alternatives after reviewing over 30 crypto exchanges here on RankFi: