How to switch from the Testnet (Mastery) to the Mainnet
By default, all the API examples listed here reference the Aion Testnet (Mastery):
https://mastery-api.aion.network/aion/dashboard/getRTMetrics
To call the Aion Mainnet, simply change mastery-api to mainnet-api:
https://mainnet-api.aion.network/aion/dashboard/getRTMetrics