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Port 38422 (xn-control)

IANA assigns port 38422 to xn-control: Xn Control Plane (3GPP).

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference
xn-control SCTP Xn Control Plane (3GPP) Luis Lopes -

Registry dates for this port: registered 2017-05-18, last modified 2017-05-19.

Check what is listening on port 38422

Linux: is anything listening on TCP 38422?
sudo ss -tlnp 'sport = :38422'
Linux / macOS: which process owns the port
sudo lsof -nP -i :38422
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':38422 '
Windows (Command Prompt)
netstat -ano | findstr :38422
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 38422 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 38422
From Windows
Test-NetConnection HOST -Port 38422

Block port 38422 in the firewall

ufw
sudo ufw deny 38422/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 38422 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 38422 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 38422' -Direction Inbound -Protocol TCP -LocalPort 38422 -Action Block

Related ports

38203agpolicy38412ng-control38462e1-interface38472f1-control

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.