What public testnets (test networks) and faucets exist?

Question

What public test-networks exist and what are their conditions?

What are the connection data?
How often (if so) are they reset?
Does a public faucet exist for this test network?
Does a block explorer exist for this test network?
How frequent/ reliable are new blocks mined?
Any thing else user should know about this test network?

It is preferred if you can post separate questions instead of combining your questions into one. That way, it helps the people answering your question and also others hunting for at least one of your questions. Thanks! — q9f, May 16 '16 at 21:44
https://ethereum.stackexchange.com/questions/6650/how-to-get-ether-on-public-testnet/21307#21307 — Badr Bellaj, Jul 15 '17 at 23:40

score 27 · Answer 1 · edited Jun 27 '23 at 23:39

Chain	Chain ID	Layer	Faucets
Ethereum*: Goerli Explorer	5	L1	https://goerlifaucet.com (account required) https://faucet.quicknode.com/ethereum/goerli
Ethereum*: Sepolia Explorer	11155111	L1	https://sepoliafaucet.com (account required) https://faucet-sepolia.rockx.com https://fauceth.komputing.org https://faucet.quicknode.com/ethereum/sepolia
BNB Smart Chain: TestNet Explorer	97	L1	https://faucet.quicknode.com/binance-smart-chain/bnb-testnet
Avalanche: Fuji Explorer	43113	L1	https://faucet.quicknode.com/avalanche/fuji
Solana: DevNet Explorer 1 2 3	n/a**	L1	https://faucet.quicknode.com/solana/devnet
Solana: TestNet Explorer 1 2 3	n/a**	L1	https://faucet.quicknode.com/solana/testnet
Polygon PoS: Mumbai Explorer	80001	L2	https://mumbaifaucet.com https://faucet.polygon.technology/ https://faucet.quicknode.com/polygon/mumbai
Polygon zkEVM: Goerli Explorer	1442	L2	https://faucet.quicknode.com/polygon/zkevm-goerli
Optimism: Goerli Explorer	420	L2	https://faucet.quicknode.com/optimism/goerli
Arbitrum: Goerli Explorer	421613	L2	https://faucet.quicknode.com/arbitrum/goerli
Base: Goerli Explorer	84531	L2	https://faucet.quicknode.com/base/goerli

*All other Ethereum Layer 1 TestNets are deprecated, like Rinkeby and Ropsten.

**Solana does not have the concept of Chain IDs. Their most closely related concept would be a cluster.

score 13 · Answer 2 · edited Jul 19 '17 at 10:32

13

B9lab's IPFS faucet with command line access

B9lab have one deployed via IPFS. this is pretty neat. long description below, here is the one-liner for rushed users:

curl -X POST  -H "Content-Type: application/json" -d '{"toWhom":"0xdcf407eae88d480e280db2d0deaa3a11c82eaa9b"}' https://ropsten.faucet.b9lab.com/tap

Replace 0xdcf407... with your testnet account. It will send 1 ETH by default. If you need more, you need to go to the IPFS interface:

$ geth --testnet --rpc --rpcport 8545 --rpcaddr 127.0.0.1 --rpccorsdomain "*" --rpcapi "eth,web3"

# in another terminal
$ ipfs daemon

And [visit localhost][2]. There is also an [IPFS gateway available][3] for the lazy.

Ether camp ropsten faucet

Navigating to ropsten.ether.camp shows a huge button GET FREE ETHER at the top of the explorer. Click it, enter your address and recieve 5 test ETH.

[2]: http://localhost:8080/ipfs/QmVAwVKys271P5EQyEfVSxm7BJDKWt42A2gHvNmxLjZMps [3]: http://ipfs.b9lab.com:8080/ipfs/QmVAwVKys271P5EQyEfVSxm7BJDKWt42A2gHvNmxLjZMps

edited Jul 19 '17 at 10:32

Xavier Leprêtre B9lab

7,366
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answered Jan 14 '17 at 19:40

q9f

32,913
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3

As of May 13th neither of these work any more. – Thomas Clowes May 13 '17 at 21:56
Yeah, ropsten is a moving target, hard to keep track of the changes. – q9f May 15 '17 at 09:10
1

The B9lab faucet does work. You are in competition with other people because it yields 1 Ether per minute. Not 1 Ether per minute per person. It also has some simple measures against abuse. – Xavier Leprêtre B9lab Jul 19 '17 at 10:38
BTW, if someone has a lot of Ropsten Ethers lying around, feel free to send some to this faucet as it is getting harder to mine them. – Xavier Leprêtre B9lab Aug 01 '17 at 10:16
@XavierLeprêtreB9lab sent 10k, please ping me on Gitter if you need more. – q9f Aug 02 '17 at 15:22
That was you then :+1: – Xavier Leprêtre B9lab Aug 03 '17 at 22:01
@ThomasClowes the curl script just worked for me... – Lee Aug 16 '17 at 09:49

score 4 · Answer 3 · edited Aug 16 '17 at 09:38

(Adding another answer rather than updating the community wiki answer, as it would involve changing most of what's there, and it may well be historically useful.)

What public test-networks exist and what are their conditions?

ROPSTEN (Revived, following spam attacks) - Proof Of Work
KOVAN - Proof Of Authority (Parity only)
RINKEBY - Clique Consensus (Geth only)

What are the connection data?

Geth: (Ropsten/Rinkeby)

Either specify the network using the ID (3 = Ropsten, 4 = Rinkeby) or using the --testnet or --rinkeby flags.

 --networkid value                    Network identifier (integer, 1=Frontier, 2=Morden (disused), 3=Ropsten, 4=Rinkeby) (default: 1)
  --testnet                            Ropsten network: pre-configured proof-of-work test network
  --rinkeby

Parity: (Ropsten/Kovan)

Use the --chain flag.

 --chain CHAIN                  Specify the blockchain type. CHAIN may be either a
                                 JSON chain specification file or olympic, frontier,
                                 homestead, mainnet, morden, ropsten, classic, expanse,
                                 testnet, kovan or dev (default: homestead).

How often (if so) are they reset?

Ropsten has been live for 241 days (as of 19 Jul 2017).
Kovan has been live for 139 days.
Rinkeby has been live for 98 days.

Does a public faucet exist for this test network?

ropsten: http://faucet.ropsten.be:3001/ (has been known to have problems)
ropsten: https://blog.b9lab.com/when-we-first-built-our-faucet-we-deployed-it-on-the-morden-testnet-70bfbf4e317e - the "script ninja" part worked for user atomh33ls (16-08-2017)
kovan: https://gitter.im/kovan-testnet/faucet (i.e. Gitter service)
rinkeby: https://faucet.rinkeby.io/

Does a block explorer exist for this test network?

How frequent/ reliable are new blocks mined?

Ropsten block time = usually sub-30 seconds
Kovan block time = seems to be sub-10 seconds
Rinkeby block time = 15 seconds (by definition?)

Any thing else user should know about this test network?

Don't assign value to test ether.

score 3 · Answer 4 · answered Oct 21 '22 at 00:04

UDPATED OCT 2022 - Goerli is now the only Ethereum testnet! Rinkeby, Ropsten, and Kovan are all deprecated because of the recent Ethereum merge.

If you need a reliable faucet, Alchemy has a good one - goerlifaucet.com. You just sign up for a free account, and you can get more free Goerli testETH every 24 hours.

score 3 · Answer 5 · edited Jun 16 '20 at 10:58

3

Just a heads up, we have created a universal Faucet here

The idea is to put as many networks together (and tokens) to make the experience smoother for developers.

edited Jun 16 '20 at 10:58

Community

1

answered Jan 09 '19 at 21:13

Moodles

81
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Just a heads up, your website is down. – Dimitris Sfounis Oct 20 '21 at 23:01

score 2 · Answer 6 · answered Mar 16 '23 at 21:44

March 2023 Update

GOERLI - There's a shortage in Goerli. If you need Goerli, you can use Alchemy's faucet: https://goerlifaucet.com.

SEPOLIA - Alchemy has launched support for Sepolia testnet and a free Sepolia faucet: https://sepoliafaucet.com.

From these faucet, you can get more testETH every day. Please only take what you need so there's enough for everyone.

score 1 · Answer 7 · answered Jun 30 '22 at 16:46

A good list of public faucets can be found on https://faucetlink.to/

If you want to run a validator on Prater or Ropsten, you can join the EthStaker Discord server and access the #request-goerli-eth or the #request-ropsten-eth channel with a BrightID verified account to get enough testnet ETH to do your deposit.

score 1 · Answer 8 · answered Aug 24 '22 at 09:58

1

Tested in Aug 2022:

https://rinkebyfaucet.com
0.5 eth (need sign with Alchemy, which is free)
https://faucets.chain.link/rinkeby
0.1 eth

answered Aug 24 '22 at 09:58

Eric

171
6

Rinkeby (Ropsten and Kovan) are now all deprecated (AKA not working) bc of the Ethereum merge. Goerli is now the only Ethereum testnet. Alchemy also has a free Goerli faucet where you can get more testETH every 24 hours - goerlifaucet.com. – A. Gupta Oct 21 '22 at 00:00

score 0 · Answer 9 · answered May 03 '23 at 20:26

As for May 2023 there are 2 public test-networks: Goerli (Chain ID: 5) and Sepolia (Chain ID: 11155111).

They both have testnet explorers:

Goerli: https://goerli.etherscan.io/

Sepolia: https://sepolia.etherscan.io/

To get free tokens you can use Alchemy's faucets: https://goerlifaucet.com and https://sepoliafaucet.com.

If you need more test tokens than these faucets provide you can buy some, as an altcoin GETH (Goerli ETH on mainnet) is available to buy on Uniswap and LayerZero made a bridge between mainnet and Goerli testnet. The site is https://testnetbridge.com. Swap and Bridge has a gas limit of 370,000 and depending on gas price the cost of transaction can be from few to even tens of dollars. To skip that high fee you can use a service from https://www.goerlieth.com/, where you can buy Goerli ETH starting from $1. They accept transfers on many networks, including Polygon that has really cheap fees.

Good luck with your projects!

score 0 · Answer 10 · answered May 08 '23 at 21:53

0

Free Sepolia Testnet Faucet that lets you claim 0.5 Sepolia ETH per day.

https://www.infura.io/faucet/sepolia

answered May 08 '23 at 21:53

anataliocs

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score 0 · Answer 11 · answered May 29 '23 at 14:08

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You can use https://www.buildbear.io/ and create your own Testnet that comes with a built-in faucet.

answered May 29 '23 at 14:08

Chandan

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What public testnets (test networks) and faucets exist?

11 Answers11

B9lab's IPFS faucet with command line access

Ether camp ropsten faucet

Linked

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