Port 648 is used for the Registry Registrar Protocol (RRP) service, which is used by domain registrars to manage domain names in the Shared Registration System (SRS) of the Internet Corporation for Assigned Names and Numbers (ICANN).
Ports those registered with IANA are shown as official ports. The same port number may be unofficialy used by various services or applications. The official usage are listed separately below its usage may change from time to time.
Official
Port |
Protocol (TCP/UDP) |
Title |
Description |
Port Type |
Port 648 |
tcp |
rrp |
Registry Registrar Protocol |
WELL KNOWN PORT |
Port 648 |
udp |
rrp |
Registry Registrar Protocol |
WELL KNOWN PORT |
UnOfficial
Unofficialy or sometimes with conflict, the same port may be used by different applications.
| Port | Protocol (TCP/UDP) | Description |