diff --git a/packages/controller-utils/src/constants.ts b/packages/controller-utils/src/constants.ts
index dbed22f656f..a3f0ee4394e 100644
--- a/packages/controller-utils/src/constants.ts
+++ b/packages/controller-utils/src/constants.ts
@@ -194,4 +194,5 @@ export const CHAIN_ID_TO_ETHERS_NETWORK_NAME_MAP: Record<
   [ChainId['linea-sepolia']]: BuiltInNetworkName.LineaSepolia,
   [ChainId['linea-mainnet']]: BuiltInNetworkName.LineaMainnet,
   [ChainId.aurora]: BuiltInNetworkName.Aurora,
+  [ChainId['rootstock-mainnet']]: BuiltInNetworkName.RootstockMainnet,
 };
diff --git a/packages/controller-utils/src/types.ts b/packages/controller-utils/src/types.ts
index b0f66676a6e..8119f1946cb 100644
--- a/packages/controller-utils/src/types.ts
+++ b/packages/controller-utils/src/types.ts
@@ -80,6 +80,7 @@ export enum BuiltInNetworkName {
   MegaETHTestnet = 'megaeth-testnet',
   MonadTestnet = 'monad-testnet',
   BaseMainnet = 'base-mainnet',
+  RootstockMainnet = 'rootstock-mainnet',
 }
 
 /**
@@ -98,6 +99,7 @@ export const ChainId = {
   [BuiltInNetworkName.MegaETHTestnet]: '0x18c6', // toHex(6342)
   [BuiltInNetworkName.MonadTestnet]: '0x279f', // toHex(10143)
   [BuiltInNetworkName.BaseMainnet]: '0x2105', // toHex(8453)
+  [BuiltInNetworkName.RootstockMainnet]: '0x1e', // toHex(30)
 } as const;
 export type ChainId = (typeof ChainId)[keyof typeof ChainId];
 
diff --git a/packages/ens-controller/src/EnsController.ts b/packages/ens-controller/src/EnsController.ts
index 1dba71cb6ae..f387e1f840c 100644
--- a/packages/ens-controller/src/EnsController.ts
+++ b/packages/ens-controller/src/EnsController.ts
@@ -38,6 +38,8 @@ export const DEFAULT_ENS_NETWORK_MAP: Record<number, Hex> = {
   17000: '0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e',
   // Sepolia
   11155111: '0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e',
+  // Rootstock Mainnet
+  30: '0xcb868aeabd31e2b66f74e9a55cf064abb31a4ad5',
 };
 
 /**