MathWallet5 has support all kinds of blockchain domain names, including ENS(.eth & .xyz), DAS(.bit), Solana Name(.sol), UNS(.crypto), ZNS(.zil) etc
Here is how to use these names in MathWallet5
When you open the transfer UI, enter the target domain name in the address field, and MathWallet will resolve that name.
You will see which name system it is, and click the name system button to double check the target address
Note that some of the name system supports multi-chain, and MathWallet will resolve based on the current blockchain.
For example, vitalik.eth can be resolved on Ethereum, but cannot be resolved on BSC.