wire / port / 21

Port 21 — ftp

Well-known port 21 (tcp/udp/sctp): File Transfer Protocol [Control]. Service name: ftp. Referenced in RFC959, RFC9260.

port kind port status standard verification verified tier A iana-registry-row@1

registry record

value: 21

references: RFC959, RFC9260

Service Nameftp
Port Number21
Transport Protocoltcp
DescriptionFile Transfer Protocol [Control]
Assignee[Jon_Postel]
Contact[Jon_Postel]
Registration Date
Modification Date
Reference[RFC959]
Service Code
Unauthorized Use Reported
Assignment NotesDefined TXT keys: u=<username> p=<password> path=<path>

provenance

agent: curl -H 'accept: application/json' wire.phall.io/port/21 or /port/21.json