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Port 1899 (mc2studios)

IANA assigns port 1899 to mc2studios: MC2Studios.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
mc2studios TCP MC2Studios Michael Coon -
mc2studios UDP MC2Studios Michael Coon -

Check what is listening on port 1899

Linux: is anything listening on TCP 1899?
sudo ss -tlnp 'sport = :1899'
Linux: UDP 1899
sudo ss -ulnp 'sport = :1899'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1899
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1899 '
Windows (Command Prompt)
netstat -ano | findstr :1899
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1899 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1899
From Windows
Test-NetConnection HOST -Port 1899
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1899

Block port 1899 in the firewall

ufw
sudo ufw deny 1899/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1899 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1899 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1899' -Direction Inbound -Protocol TCP -LocalPort 1899 -Action Block
ufw
sudo ufw deny 1899/udp
iptables
sudo iptables -A INPUT -p udp --dport 1899 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1899 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1899' -Direction Inbound -Protocol UDP -LocalPort 1899 -Action Block

Related ports

1897metaagent1898cymtec-port1900SSDP / UPnP1901fjicl-tep-a

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