# Supported Networks - Direct Funding Method
Source: https://docs.chain.link/vrf/v2/direct-funding/supported-networks
> For the complete documentation index, see [llms.txt](/llms.txt).
Chainlink VRF allows you to integrate provably fair and verifiably random data in your smart contract.
For implementation details, read [Introduction to Chainlink VRF v2 Direct funding method](/vrf/v2/direct-funding).
## Wrapper parameters
These parameters are configured in the VRF v2 Wrapper contract. You can view these values by running `getConfig` on the VRF v2 Wrapper or by viewing the VRF v2 Wrapper contract in a blockchain explorer.
- `uint32 stalenessSeconds`: How long the VRF v2 Wrapper waits until we consider the ETH/LINK price used for converting gas costs to LINK is stale and use `fallbackWeiPerUnitLink`.
- `uint32 wrapperGasOverhead`: The gas overhead of the VRF v2 Wrapper's `fulfillRandomWords` function.
- `uint32 coordinatorGasOverhead`: The gas overhead of the coordinator's `fulfillRandomWords` function.
- `uint8 maxNumWords`: Maximum number of words that can be requested in a single wrapped VRF request.
## Coordinator parameters
Some parameters are important to know and are configured in the coordinator contract. You can view these values by running `getConfig` on the coordinator or by viewing the coordinator contract in a blockchain explorer.
- `uint16 minimumRequestConfirmations`: The minimum number of confirmation blocks on VRF requests before oracles respond
- `uint32 maxGasLimit`: The maximum gas limit supported for a `fulfillRandomWords` callback. Note that you still need to subtract the `wrapperGasOverhead` for the accurate limit, as explained in [Direct funding limits](/vrf/v2/direct-funding/#limits).
## Fee parameters
Fee parameters are configured in the VRF v2 Wrapper and the VRF v2 Coordinator contracts and specify the premium you pay per request in addition to the gas cost for the transaction. You can view them by running `getConfig` on the VRF v2 Wrapper:
- The `uint32 fulfillmentFlatFeeLinkPPM` parameter is a flat fee and defines the fees per request specified in millionths of LINK.
- The `uint8 wrapperPremiumPercentage` parameter defines the premium ratio in percentage. For example, a value of *0* indicates no premium. A value of *15* indicates a *15%* premium.
The details for calculating the total transaction cost can be found [here](/vrf/v2/direct-funding/#request-and-receive-data).
## Configurations
VRF v2 coordinators for direct funding are available on several networks. To see a list of coordinators for subscription funding, see the [Subscription Configurations](/vrf/v2/subscription/supported-networks) page.
To use Chainlink VRF on certain networks, you may need to conduct token transfers. You can transfer tokens by using [Chainlink CCIP](/ccip/tutorials/evm/transfer-tokens-from-contract), [Transporter](https://www.transporter.io/) or third-party applications such as [XSwap](https://xswap.link/).
> **NOTE: Interfaces and Applications**
>
> Chainlink CCIP is a messaging protocol. Third parties may build user interfaces or other applications on top of CCIP.
> Neither Chainlink Labs nor the Chainlink Foundation owns, controls, endorses, or assumes any responsibility for any
> such interfaces or applications. You are solely responsible for your use of such interfaces or applications. Please
> visit the Chainlink Foundation [Terms of Service](https://chain.link/terms) for more information.
### Ethereum mainnet
| Item | Value |
| -------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| LINK Token | |
| VRF Wrapper | |
| VRF Coordinator | |
| Wrapper Premium Percentage | 0 |
| Coordinator Flat Fee | 0.25 LINK |
| Minimum Confirmations | 3 |
| Maximum Confirmations | 200 |
| Maximum Random Values | 10 |
| Wrapper Gas overhead | 40000 |
| Coordinator Gas Overhead | 90000 |
### Sepolia testnet
Testnet LINK and ETH are available from faucets.chain.link.
Testnet ETH is also available from several public ETH faucets.
| Item | Value |
| -------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| LINK Token | |
| | |
| VRF Wrapper | |
| VRF Coordinator | |
| Wrapper Premium Percentage | 0 |
| Coordinator Flat Fee | 0.25 LINK |
| Minimum Confirmations | 3 |
| Maximum Confirmations | 200 |
| Maximum Random Values | 10 |
| Wrapper Gas overhead | 40000 |
| Coordinator Gas Overhead | 90000 |
### BNB Chain mainnet
> **TIP: Important**
>
> The LINK provided by the [BNB Chain Bridge](https://www.bnbchain.world/en/bridge) is not ERC-677 compatible, so cannot
> be used with Chainlink oracles. However, it can be [**converted to the official LINK token on BNB Chain using
> Chainlink's PegSwap service**](https://pegswap.chain.link/).
| Item | Value |
| -------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| LINK Token | |
| VRF Wrapper | |
| VRF Coordinator | |
| Wrapper Premium Percentage | 0 |
| Coordinator Flat Fee | 0.005 LINK |
| Minimum Confirmations | 3 |
| Maximum Confirmations | 200 |
| Maximum Random Values | 10 |
| Wrapper Gas overhead | 40000 |
| Coordinator Gas Overhead | 90000 |
### BNB Chain testnet
Testnet LINK is available from [https://faucets.chain.link/bnb-chain-testnet](https://faucets.chain.link/bnb-chain-testnet)
| Item | Value |
| -------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| LINK Token | |
| VRF Wrapper | |
| VRF Coordinator | |
| Wrapper Premium Percentage | 0 |
| Coordinator Flat Fee | 0.005 LINK |
| Minimum Confirmations | 3 |
| Maximum Confirmations | 200 |
| Maximum Random Values | 10 |
| Wrapper Gas overhead | 40000 |
| Coordinator Gas Overhead | 90000 |
### Polygon mainnet
> **TIP: Important**
>
> The LINK provided by the [Polygon Bridge](https://wallet.polygon.technology/bridge) is not ERC-677 compatible, so
> cannot be used with Chainlink oracles. However, it can be [**converted to the official LINK token on Polygon using
> Chainlink's PegSwap service**](https://pegswap.chain.link/)
| Item | Value |
| -------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| LINK Token | |
| VRF Wrapper | |
| VRF Coordinator | |
| Wrapper Premium Percentage | 0 |
| Coordinator Flat Fee | 0.0005 LINK |
| Minimum Confirmations | 3 |
| Maximum Confirmations | 200 |
| Maximum Random Values | 10 |
| Wrapper Gas overhead | 40000 |
| Coordinator Gas Overhead | 90000 |
### Polygon Amoy testnet
| Item | Value |
| ------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| LINK Token | |
| VRF Coordinator | |
| 500 gwei Key Hash | |
| Premium | 0.0005 LINK |
| Max Gas Limit | 2,500,000 |
| Minimum Confirmations | 3 |
| Maximum Confirmations | 200 |
| Maximum Random Values | 10 |
| Wrapper Gas overhead | 40000 |
| Coordinator Gas Overhead | 90000 |
### Avalanche mainnet
| Item | Value |
| -------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| LINK Token | |
| VRF Wrapper | |
| VRF Coordinator | |
| Wrapper Premium Percentage | 0 |
| Coordinator Flat Fee | 0.005 LINK |
| Minimum Confirmations | 1 |
| Maximum Confirmations | 200 |
| Maximum Random Values | 10 |
| Wrapper Gas overhead | 40000 |
| Coordinator Gas Overhead | 90000 |
### Avalanche Fuji testnet
Testnet LINK is available from [https://faucets.chain.link/fuji](https://faucets.chain.link/fuji)
| Item | Value |
| -------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| LINK Token | |
| | |
| VRF Wrapper | |
| VRF Coordinator | |
| Wrapper Premium Percentage | 0 |
| Coordinator Flat Fee | 0.005 LINK |
| Minimum Confirmations | 1 |
| Maximum Confirmations | 200 |
| Maximum Random Values | 10 |
| Wrapper Gas overhead | 40000 |
| Coordinator Gas Overhead | 90000 |
### Fantom mainnet
> **TIP: Important**
>
> You must use ERC-677 LINK on Fantom. ERC-20 LINK will not work with Chainlink services. Fantom is not supported in VRF
> V2.5.
| Item | Value |
| -------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| LINK Token | |
| | |
| VRF Wrapper | |
| VRF Coordinator | |
| Wrapper Premium Percentage | 0 |
| Coordinator Flat Fee | 0.0005 LINK |
| Minimum Confirmations | 1 |
| Maximum Confirmations | 200 |
| Maximum Random Values | 10 |
| Wrapper Gas overhead | 40000 |
| Coordinator Gas Overhead | 90000 |
### Fantom testnet
> **NOTE: Fantom Testnet Faucet**
>
> Testnet LINK is available from [https://faucets.chain.link/fantom-testnet](https://faucets.chain.link/fantom-testnet).
| Item | Value |
| -------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| LINK Token | |
| | |
| VRF Wrapper | |
| VRF Coordinator | |
| Wrapper Premium Percentage | 0 |
| Coordinator Flat Fee | 0.0005 LINK |
| Minimum Confirmations | 1 |
| Maximum Confirmations | 200 |
| Maximum Random Values | 10 |
| Wrapper Gas overhead | 40000 |
| Coordinator Gas Overhead | 90000 |
### Arbitrum mainnet
| Item | Value |
| -------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| LINK Token | |
| | |
| VRF Coordinator | |
| VRF Wrapper | |
| Wrapper Premium Percentage | 0 |
| Coordinator Flat Fee | 0.0005 LINK |
| Minimum Confirmations | 1 |
| Maximum Confirmations | 200 |
| Maximum Random Values | 10 |
| Wrapper Gas overhead | 40000 |
| Coordinator Gas Overhead | 90000 |
### Arbitrum Sepolia testnet
Testnet LINK is available from [https://faucets.chain.link/arbitrum-sepolia](https://faucets.chain.link/arbitrum-sepolia)
| Item | Value |
| -------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| LINK Token | |
| | |
| VRF Coordinator | |
| VRF Wrapper | |
| Wrapper Premium Percentage | 0 |
| Coordinator Flat Fee | 0.0005 LINK |
| Minimum Confirmations | 1 |
| Maximum Confirmations | 200 |
| Maximum Random Values | 10 |
| Wrapper Gas overhead | 40000 |
| Coordinator Gas Overhead | 90000 |