What network is Polkastarter on?

I'm curious to know, on which network does Polkastarter operate? As someone who's interested in the world of cryptocurrency and decentralized finance, I've come across Polkastarter and its innovative approach to fundraising and token sales. However, I'm not entirely sure which blockchain network it's built on. Could you please clarify which network Polkastarter is leveraging to provide its services and how this choice benefits its users and the broader ecosystem?