Ref: https://ethereum.stackexchange.com/questions/17051/how-to-select-a-network-id-or-is-there-a-list-of-network-ids/17101#17101
0
: Olympic, Ethereum public pre-release testnet1
: Frontier, Homestead, Metropolis, the Ethereum public main network1
: Classic, the (un)forked public Ethereum Classic main network, chain ID 61
1
: Expanse, an alternative Ethereum implementation, chain ID 2
2
: Morden, the public Ethereum testnet, now Ethereum Classic testnet3
: Ropsten, the public cross-client Ethereum testnet4
: Rinkeby, the public Geth Ethereum testnet42
: Kovan, the public Parity Ethereum testnet77
: Sokol, the public POA testnet99
: POA, the public Proof of Authority Ethereum network7762959
: Musicoin, the music blockchain