net_version

Returns the network ID that the client is connected to.

apiKeystringRequired

The network ID as a string. Common IDs are "1" for mainnet, "3" for Ropsten, etc.

1	curl -X POST https://polygon-mainnet.g.alchemy.com/v2/{apiKey} \
2	-H "Content-Type: application/json" \
3	-d '{
4	"jsonrpc": "2.0",
5	"method": "net_version",
6	"params": [],
7	"id": 1
8	}'