knownports / Ports 10000–10999 / Port 10500

Port10500

  • hip-nat-tHIP NAT-Traversal

IANA has registered port 10500 to hip-nat-t on UDP; TCP 10500 is held as reserved. The entry cites RFC 5770 and RFC 9028. Its two cited RFCs are the most of any number in ports 10000–10999. No number is assigned for 56 places below it and 39 above, counting all protocols: the third widest gap around any of the 62 assigned numbers in the range.

  1. 10288blocks
  2. 150 free
  3. 10439bngsync
  4. 3 free
  5. 10443cirrossp
  6. 56 free
  7. 10500hip-nat-t
  8. 39 free
  9. 10540MOS-lower
  10. 10541MOS-upper
  11. 10542MOS-aux
TCP assignedUDP assignedreservedno entryAll 62 assigned numbers in ports 10000–10999

Registry entries

ServiceProtocolsRegisteredModifiedRFCsOther specs
hip-nat-tUDP—Aug 12, 2020RFC 5770, RFC 9028—

Cited RFCs

RFCTitlePublishedStatusLater changes
RFC 5770Basic Host Identity Protocol (HIP) Extensions for Traversal of Network Address TranslatorsApril 2010Experimental—
RFC 9028Native NAT Traversal Mode for the Host Identity ProtocolJuly 2021Experimental—

Listed in Ports that cite an RFC