# CHAIN_IDS

> `const` **CHAIN\_IDS**: [`Record`](https://www.typescriptlang.org/docs/handbook/utility-types.html#recordkeys-type)\<[`FilecoinNetworkType`](/reference/filoz/synapse-sdk/synapse/type-aliases/filecoinnetworktype/), `number`\>

Defined in: [packages/synapse-sdk/src/utils/constants.ts:21](https://github.com/FilOzone/synapse-sdk/blob/6cf8b3ed2dd3ae76ed05cb86995d711a08a298a6/packages/synapse-sdk/src/utils/constants.ts#L21)

Network chain IDs