Últimas siglas añadidas:

464 : Kerberos Change/Set password

4569 : Inter-Asterisk eXchange (IAX2)

4567 : Sinatra default server port in development mode (HTTP)

4534 : Armagetron Advanced default server port

4500 : IPSec NAT Traversal (RFC 3947)

445 : Microsoft-DS SMB file sharing

445 : Microsoft-DS Active Directory, Windows shares

444 : SNPP, Simple Network Paging Protocol (RFC 1568)

4433-4436 : Axence nVision

443 : HTTPS (Hypertext Transfer Protocol over SSL/TLS)

43594 : Jagex, RuneScape, FunOrb, etc

4321 : Referral Whois (RWhois) Protocol

43048 : TheòsMessenger third port for service TheòsMessenger

43047 : TheòsMessenger second port for service TheòsMessenger

43 : WHOIS protocol