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Port 5913 (aoc-acars, ads-c)

IANA assigns port 5913 to aoc-acars, ads-c: Airline operational communications applications using ACARS.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
aoc-acars TCP Airline operational communications applications using ACARS Eivan Cerasi -
aoc-acars UDP Airline operational communications applications using ACARS Eivan Cerasi -
ads-c SCTP Automatic Dependent Surveillance Justin Yu -

Registry dates for this port: registered 2008-10-10, last modified 2022-08-08.

Check what is listening on port 5913

Linux: is anything listening on TCP 5913?
sudo ss -tlnp 'sport = :5913'
Linux: UDP 5913
sudo ss -ulnp 'sport = :5913'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5913
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5913 '
Windows (Command Prompt)
netstat -ano | findstr :5913
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5913 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5913
From Windows
Test-NetConnection HOST -Port 5913
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5913

Block port 5913 in the firewall

ufw
sudo ufw deny 5913/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5913 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5913 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5913' -Direction Inbound -Protocol TCP -LocalPort 5913 -Action Block
ufw
sudo ufw deny 5913/udp
iptables
sudo iptables -A INPUT -p udp --dport 5913 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5913 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5913' -Direction Inbound -Protocol UDP -LocalPort 5913 -Action Block

Related ports

5911ats-acars, cpdlc5912ais-met, fis5914ipsdtls5963indy

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.