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Port 44544 (domiq)

IANA assigns port 44544 to domiq: DOMIQ Building Automation.

Registered (user) port, 1024-49151 UDP

Port 44544 is normally used over UDP; the checker tests TCP only, so a "filtered" result does not mean the UDP service is down.

IANA assignment

Service nameProtoDescriptionAssigneeReference
domiq UDP DOMIQ Building Automation DOMIQ Sp zoo -

Registry dates for this port: registered 2011-08-29.

Check what is listening on port 44544

Linux: UDP 44544
sudo ss -ulnp 'sport = :44544'
Linux / macOS: which process owns the port
sudo lsof -nP -i :44544
Windows (Command Prompt)
netstat -ano | findstr :44544
Windows (PowerShell)
Get-NetUDPEndpoint -LocalPort 44544

Test it from outside

UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 44544

Block port 44544 in the firewall

ufw
sudo ufw deny 44544/udp
iptables
sudo iptables -A INPUT -p udp --dport 44544 -j DROP
nftables
sudo nft add rule inet filter input udp dport 44544 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 44544' -Direction Inbound -Protocol UDP -LocalPort 44544 -Action Block

Related ports

44444cognex-dataman44445acronis-backup44553rbr-debug44600asihpi

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