Since this explorer is database-free, it doesn't natively support address balances & transaction history. However, you can check it in :
https://explorer.nusacoin.org/address/nu1qg00azqxzurnv8pq50q4cg3zmd0rqwd9fg6e8yk{
"isvalid": true,
"address": "nu1qg00azqxzurnv8pq50q4cg3zmd0rqwd9fg6e8yk",
"scriptPubKey": "001443dfd100c2e0e6c38414782b84445b6bc60734a9",
"isscript": false,
"iswitness": true,
"witness_version": 0,
"witness_program": "43dfd100c2e0e6c38414782b84445b6bc60734a9"
}