HTTPfy

Port 2639 (aminet)

IANA assigns port 2639 to aminet: AMInet.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
aminet TCP AMInet Alcorn McBride Inc -
aminet UDP AMInet Alcorn McBride Inc -

Check what is listening on port 2639

Linux: is anything listening on TCP 2639?
sudo ss -tlnp 'sport = :2639'
Linux: UDP 2639
sudo ss -ulnp 'sport = :2639'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2639
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2639 '
Windows (Command Prompt)
netstat -ano | findstr :2639
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2639 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2639
From Windows
Test-NetConnection HOST -Port 2639
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2639

Block port 2639 in the firewall

ufw
sudo ufw deny 2639/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2639 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2639 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2639' -Direction Inbound -Protocol TCP -LocalPort 2639 -Action Block
ufw
sudo ufw deny 2639/udp
iptables
sudo iptables -A INPUT -p udp --dport 2639 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2639 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2639' -Direction Inbound -Protocol UDP -LocalPort 2639 -Action Block

Related ports

2637imdocsvc2638sybaseanywhere2640ami-control2641hdl-srv

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