# Is there a list of peers (in order to download the blockchain)?

**URL:** <https://talk.neptune.cash/t/is-there-a-list-of-peers-in-order-to-download-the-blockchain/232>\
**Category:** General\
**Created:** [February 8, 2026, 9:46pm UTC](https://talk.neptune.cash/t/is-there-a-list-of-peers-in-order-to-download-the-blockchain/232 "2026-02-08T21:46:53Z")\
**Posts on this page:** 1\
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**Author:** ![aszepieniec](https://talk.neptune.cash/user_avatar/talk.neptune.cash/aszepieniec/32/5_2.png) [@aszepieniec](https://talk.neptune.cash/u/aszepieniec)\
**Post date:** [February 9, 2026, 11:49am UTC](https://talk.neptune.cash/t/is-there-a-list-of-peers-in-order-to-download-the-blockchain/232/2 "2026-02-09T11:49:05Z")

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With the introduction of the [libp2p network stack](https://github.com/Neptune-Crypto/neptune-core/pull/828), the hardcoded bootstrap nodes are defined in [`address_book.rs : 316 `](https://github.com/Neptune-Crypto/neptune-core/blob/08f3b46c364d092ad784d166708a5bff511c5666/neptune-core/src/application/network/address_book.rs#L316)to be:

- 139.162.193.206
- 51.15.139.238
- 2001:bc8:17c0:41e:46a8:42ff:fe22:e8e9

The hardcoded bootstrap nodes are dialed if a) the address book is empty; and b) no peers are specified via `--peer` command-line arguments. The ports are 9800 for UDP and 9801 for TCP (both protocols are attempted). Port 9798 is allocated to the _legacy_ peer-to-peer stack, which uses TCP only.

Once a connection to a peer is established, the client will a) populate the address book with the addresses of peers (this information is persisted); and b) discover new peers through its connections.

So if you are starting the node with ``--peer 51.15.139.238:9798` `--peer 139.162.193.206:9798 --peer [2001:bc8:17c0:41e:46a8:42ff:fe22:e8e9]:9798``, you should know that these CLI flags are no longer necessary. (That is, unless you distrust the libp2p network stack and want to rely on the deprecated legacy stack.)

What to do if you cannot connect to any of the hardcoded bootstrap nodes?

1. Make sure your network allows these connections. Ensure that ports 9798, 9800, 9801 on TCP and UDP are open for sending and receiving. Ensure that traffic over IPv6 is allowed.
2. Dial peers manually. You can do this with `neptune-cli dial <multiaddr>` and pick an address from the list below. Please note that the ports suggest that most of these nodes are behind a NAT and you will not be able to reach them.

```auto
/ip4/51.158.203.7/udp/9800/quic-v1
/ip6/62.113.194.208/tcp/37340/quic-v1
/ip6/83.142.194.208/tcp/56350
/ip6/::ffff:194.190.216.153/tcp/45272
/ip6/::ffff:213.144.107.86/tcp/50494
/ip6/::ffff:213.144.122.126/tcp/44768
/ip6/66.233.249.14/udp/7992
/ip6/::ffff:128.14.98.68/tcp/7991
/ip6/::ffff:149.28.180.123/tcp/63162
/ip6/::ffff:171.236.48.182/udp/51640/quic-v1
/ip6/::ffff:246.225.150.172/tcp/3261/quic-v1
/ip6/::ffff:89.44.85.139/tcp/32826

```

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