knownports / Ports 600–699 / Port 631

Port631

  • ippIPP (Internet Printing Protocol)
  • ippsInternet Printing Protocol over HTTPS

Port 631 carries two registered names: ipp on TCP and UDP; ipps on TCP. The entries cite RFC 8011.

  1. 628qmqp
  2. 6293com-amp3
  3. 630rda
  4. 631ipp
  5. 632bmpp
  6. 633servstat
  7. 634ginad
TCP assignedUDP assignedreservedno entryAll 99 assigned numbers in ports 600–699

Registry entries

ServiceProtocolsRegisteredModifiedRFCsOther specs
ippTCPUDP—Jul 6, 2018RFC 8011—
ippsTCPJul 6, 2018—RFC 8011—

Cited RFCs

RFCTitlePublishedStatusLater changes
RFC 8011Internet Printing Protocol/1.1: Model and SemanticsJanuary 2017Internet Standard—

Where it sits in the registry

Port 631 is one of 99 numbers with an assignment in ports 600–699 (99.0% of the range). 98 other numbers in the range are assigned on exactly the same transports, TCP and UDP, the usual pattern for older entries. Its first recorded registration, July 6, 2018, is the most recent of the 3 dates recorded in the range. IANA last modified the entry on July 6, 2018. Three other numbers in the registry carry the same modification date, a sign of one batch update.

Status on each protocol

ProtocolOn port 631Other numbers with the same statusNearest with the same status
TCPassigned to ipp and ipps5,887630 rda
UDPassigned to ipp5,500630 rda
SCTPno entry5,999630 rda
DCCPno entry6,080630 rda

5,273 other assigned numbers in the registry have exactly this combination across all four protocols.

The nearest assigned numbers

PortServiceLabelProtocolsRegisteredDistance
628qmqp—TCPUDP—3
6293com-amp33Com AMP3TCPUDP—2
630rda—TCPUDP—1
632bmpp—TCPUDP—1
633servstatService Status update (Sterling Software)TCPUDP—2
634ginad—TCPUDP—3

Other entries that mention ipp

The text ipp appears in the name or label of one other registry entry, every one shown here. It is a text match, not a statement that the services are related.

  • 3951 pwgippfax “PWG IPP Facsimile”

Listed in Ports that cite an RFC · Numbers shared by several services