A few months ago I deployed a test ERC20 token, called
2BC, to the Ethereum Kovan testnet.
This token can be found here: https://kovan.etherscan.io/token/0x938736ab99c0a46bbf8fe7fb06e6f0974902d581
Yesterday, I deployed a new ERC20 token, called
BREV, to the Polygon mainnet.
This token can be found here: https://polygonscan.com/token/0x938736ab99c0a46bbf8fe7fb06e6f0974902d581
How on earth do these two tokens have the same contract address?