Port 21337Xahau P2P Network Protocol

TCP port 21337 is assigned to Xahau node-to-node traffic for exchanging peer and ledger data.

transport: tcp
in transit: encrypted
assignment: official
risk: 2/10
lookups: 0

also known as xahaud, Xahau peer protocol

Technical Details

what runs on :21337

A TCP endpoint for Xahau node-to-node communication, rather than a user-facing API. Xahau is based on the XRP Ledger software, and its peer protocol is used by nodes to exchange network, transaction, ledger, and validation data. Peer connections use TLS, followed by the protocol's peer negotiation and message exchange. The IANA assignment identifies 21337 for this service; deployments may configure different listening ports.

Security Information

exposure of :21337

risk score

2/ 10safe

routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.

network services averages 2.6 across 1,935 ports — this one sits 0.6 below.

in transit

encrypted

payloads are protected on the wire

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

tcp

every listening transport is another surface to filter at the edge

security overview

This is a peer-network endpoint intended for communication between nodes, so a publicly reachable listener can be normal for a node operator. Exposure still lets remote peers interact with the node's networking implementation and consume resources; keep the node software updated and apply any peer-access restrictions appropriate to the deployment. Internet-wide scan data has not observed this port open, and there is no indication here of a widely deployed listener or known port-specific exploit.

Record

iana registry entry

port: :21337
service: Xahau P2P Network Protocol
transport: TCP
encryption: tls / encrypted
assignment: iana registered
risk: 2/10safe
category: Network Services
usage: This port is assigned to the Xahau P2P network protocol used by Xahau nodes to communicate with other nodes. Engineers are most likely to encounter it on a host running xahaud; the assignment does not mean every Xahau node uses this port as its listening default.
lookups: 0rank 993
added: 2026-10-18
updated: 2026-10-18
references: IANA service name registry — port 21337

Something wrong?

This record is maintained by the engineers who use port 21337. Every field on it is editable — change what's wrong, say how you know, and a reviewer publishes it, usually within a minute. Last touched 2026-10-18.

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edit this record →back to the registry

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risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :21337Xahau P2P Network Protocol

Technical Details

Security Information

Related Ports

Port 21337Xahau P2P Network Protocol