HTTPfy

Port 455 (creativepartnr)

IANA assigns port 455 to creativepartnr: CreativePartnr.

Well-known (system) port, 0-1023 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
creativepartnr TCP CreativePartnr Jesus Ortiz -
creativepartnr UDP CreativePartnr Jesus Ortiz -

Check what is listening on port 455

Linux: is anything listening on TCP 455?
sudo ss -tlnp 'sport = :455'
Linux: UDP 455
sudo ss -ulnp 'sport = :455'
Linux / macOS: which process owns the port
sudo lsof -nP -i :455
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':455 '
Windows (Command Prompt)
netstat -ano | findstr :455
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 455 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 455
From Windows
Test-NetConnection HOST -Port 455
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 455

Block port 455 in the firewall

ufw
sudo ufw deny 455/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 455 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 455 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 455' -Direction Inbound -Protocol TCP -LocalPort 455 -Action Block
ufw
sudo ufw deny 455/udp
iptables
sudo iptables -A INPUT -p udp --dport 455 -j DROP
nftables
sudo nft add rule inet filter input udp dport 455 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 455' -Direction Inbound -Protocol UDP -LocalPort 455 -Action Block

Related ports

3366creativepartnr453creativeserver454contentserver456macon-tcp, macon-udp457scohelp

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