Update testnets for third-party providers (#3320, #3323, #3340, #3358, #3423).

packages/providers/src.ts/alchemy-provider.ts

@@ -58,17 +58,8 @@ export class AlchemyProvider extends UrlJsonRpcProvider {
             case "homestead":
                 host = "eth-mainnet.alchemyapi.io/v2/";
                 break;
-            case "ropsten":
-                host = "eth-ropsten.alchemyapi.io/v2/";
-                break;
-            case "rinkeby":
-                host = "eth-rinkeby.alchemyapi.io/v2/";
-                break;
             case "goerli":
-                host = "eth-goerli.alchemyapi.io/v2/";
+                host = "eth-goerli.g.alchemyapi.io/v2/";
-                break;
-            case "kovan":
-                host = "eth-kovan.alchemyapi.io/v2/";
                 break;
             case "matic":
                 host = "polygon-mainnet.g.alchemy.com/v2/";
@@ -79,18 +70,12 @@ export class AlchemyProvider extends UrlJsonRpcProvider {
             case "arbitrum":
                 host = "arb-mainnet.g.alchemy.com/v2/";
                 break;
-            case "arbitrum-rinkeby":
-                host = "arb-rinkeby.g.alchemy.com/v2/";
-                break;
             case "arbitrum-goerli":
                 host = "arb-goerli.g.alchemy.com/v2/";
                 break;
             case "optimism":
                 host = "opt-mainnet.g.alchemy.com/v2/";
                 break;
-            case "optimism-kovan":
-                host = "opt-kovan.g.alchemy.com/v2/";
-                break;
             case "optimism-goerli":
                 host = "opt-goerli.g.alchemy.com/v2/"
                 break;

packages/providers/src.ts/etherscan-provider.ts

@@ -171,20 +171,22 @@ export class EtherscanProvider extends BaseProvider{
         switch(this.network ? this.network.name: "invalid") {
             case "homestead":
                 return "https:/\/api.etherscan.io";
-            case "ropsten":
-                return "https:/\/api-ropsten.etherscan.io";
-            case "rinkeby":
-                return "https:/\/api-rinkeby.etherscan.io";
-            case "kovan":
-                return "https:/\/api-kovan.etherscan.io";
             case "goerli":
                 return "https:/\/api-goerli.etherscan.io";
             case "sepolia":
                 return "https:/\/api-sepolia.etherscan.io";
+            case "matic":
+                return "https:/\/api.polygonscan.com";
+            case "maticmum":
+                return "https:/\/api-testnet.polygonscan.com";
+            case "arbitrum":
+                return "https:/\/api.arbiscan.io";
+            case "arbitrum-goerli":
+                return "https:/\/api-goerli.arbiscan.io";
             case "optimism":
                 return "https:/\/api-optimistic.etherscan.io";
-            case "optimism-kovan":
+            case "optimism-goerli":
-                return "https:/\/api-kovan-optimistic.etherscan.io";
+                return "https:/\/api-goerli-optimistic.etherscan.io";
             default:
         }
 

packages/providers/src.ts/infura-provider.ts

@@ -87,15 +87,6 @@ export class InfuraProvider extends UrlJsonRpcProvider {
             case "homestead":
                 host = "mainnet.infura.io";
                 break;
-            case "ropsten":
-                host = "ropsten.infura.io";
-                break;
-            case "rinkeby":
-                host = "rinkeby.infura.io";
-                break;
-            case "kovan":
-                host = "kovan.infura.io";
-                break;
             case "goerli":
                 host = "goerli.infura.io";
                 break;
@@ -111,14 +102,14 @@ export class InfuraProvider extends UrlJsonRpcProvider {
             case "optimism":
                 host = "optimism-mainnet.infura.io";
                 break;
-            case "optimism-kovan":
+            case "optimism-goerli":
-                host = "optimism-kovan.infura.io";
+                host = "optimism-goerli.infura.io";
                 break;
             case "arbitrum":
                 host = "arbitrum-mainnet.infura.io";
                 break;
-            case "arbitrum-rinkeby":
+            case "arbitrum-goerli":
-                host = "arbitrum-rinkeby.infura.io";
+                host = "arbitrum-goerli.infura.io";
                 break;
             default:
                 logger.throwError("unsupported network", Logger.errors.INVALID_ARGUMENT, {