Port 384225G Xn Control Plane (XnAP)

SCTP port used by 5G base stations for Xn control-plane signaling, including inter-base-station setup and mobility procedures.

inNetwork Services Mobile

transport: sctp
in transit: cleartext
assignment: official
risk: 6/10
lookups: 0

Technical Details

what runs on :38422

XnAP is the control-plane protocol for the 3GPP Xn interface between NG-RAN nodes. It uses SCTP on port 38422; after an SCTP association is established, XnAP messages carry procedures such as Xn Setup and handover coordination, encoded using ASN.1. The related Xn user plane is separate and commonly uses GTP-U over UDP port 2152. SCTP and XnAP do not encrypt traffic by default; operators may protect signaling with network-layer security such as IPsec.

Security Information

exposure of :38422

risk score

6/ 10risk

treat as sensitive. widely scanned and regularly exploited when reachable — restrict it to known sources.

network services averages 2.6 across 2,001 ports — this one sits 3.4 above.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

official

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

reachable over

sctp

every listening transport is another surface to filter at the edge

security overview

This is sensitive mobile-network signaling and should be reachable only between authorized operator network nodes, not exposed to the public internet. Without network-layer protection and access controls, an attacker with access to the association could probe or interfere with inter-node signaling; SCTP itself does not provide confidentiality.

Record

iana registry entry

port: :38422
service: 5G Xn Control Plane (XnAP)
transport: SCTP
encryption: cleartext
assignment: iana registered
risk: 6/10risk
category: Network Services Mobile
usage: 5G gNBs use XnAP over SCTP to coordinate over the Xn interface, including setup, mobility, and load-management procedures. Engineers encounter it on operator-managed networks between 5G radio access nodes, not as a public-facing service.
lookups: 0rank 993
added: 2026-10-20
updated: 2026-10-20
references: IANA service name registry — port 38422

Something wrong?

This record is maintained by the engineers who use port 38422. 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 2026-10-20.

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risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :384225G Xn Control Plane (XnAP)

Technical Details

Security Information

Related Ports

Port 384225G Xn Control Plane (XnAP)