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Port 3846 (an-pcp)

IANA assigns port 3846 to an-pcp: Astare Network PCP.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
an-pcp TCP Astare Network PCP Tony Gulino -
an-pcp UDP Astare Network PCP Tony Gulino -

Registry dates for this port: registered 2003-08.

Check what is listening on port 3846

Linux: is anything listening on TCP 3846?
sudo ss -tlnp 'sport = :3846'
Linux: UDP 3846
sudo ss -ulnp 'sport = :3846'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3846
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3846 '
Windows (Command Prompt)
netstat -ano | findstr :3846
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3846 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3846
From Windows
Test-NetConnection HOST -Port 3846
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3846

Block port 3846 in the firewall

ufw
sudo ufw deny 3846/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3846 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3846 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3846' -Direction Inbound -Protocol TCP -LocalPort 3846 -Action Block
ufw
sudo ufw deny 3846/udp
iptables
sudo iptables -A INPUT -p udp --dport 3846 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3846 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3846' -Direction Inbound -Protocol UDP -LocalPort 3846 -Action Block

Related ports

3844rnm3845v-one-spp3847msfw-control3848item

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