knownports / Ports 800–1023 / Port 995

Port995

  • pop3sPOP3 over TLS protocol

IANA has registered port 995 to pop3s on TCP and UDP. The entry cites RFC 8314; 465 (submissions) and 993 (imaps) cite the same document. It is the TLS counterpart of pop3 on port 110.

  1. 991nas
  2. 992telnets
  3. 993imaps
  4. 1 free
  5. 995pop3s
  6. 996vsinet
  7. 997maitrd
  8. 998busboy
TCP assignedUDP assignedreservedno entryAll 44 assigned numbers in ports 800–1023

Registry entries

ServiceProtocolsRegisteredModifiedRFCsOther specs
pop3sTCPUDP—Dec 12, 2017RFC 8314—

Cited RFCs

RFCTitlePublishedStatusLater changes
RFC 8314Cleartext Considered Obsolete: Use of Transport Layer Security (TLS) for Email Submission and AccessJanuary 2018Proposed Standardupdated by RFC 8997

Where it sits in the registry

Port 995 is one of 44 numbers with an assignment in ports 800–1023 (19.6% of the range). 36 other numbers in the range are assigned on exactly the same transports, TCP and UDP, the usual pattern for older entries. The registry records no registration date for it, as for 36 other numbers in the range; dates were recorded mainly from 2002 on. IANA last modified the entry on December 12, 2017. No other number in the registry shares that modification date.

Status on each protocol

ProtocolOn port 995Other numbers with the same statusNearest with the same status
TCPassigned to pop3s5,887996 vsinet
UDPassigned to pop3s5,500996 vsinet
SCTPno entry5,999996 vsinet
DCCPno entry6,080996 vsinet

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

The nearest assigned numbers

PortServiceLabelProtocolsRegisteredDistance
991nasNetnews Administration SystemTCPUDP—4
992telnetstelnet protocol over TLS/SSLTCPUDP—3
993imapsIMAP over TLS protocolTCP—2
996vsinet—TCPUDP—1
997maitrd—TCPUDP—2
998busboy—TCP—3
998puparp—UDP—3

Listed in Ports that cite an RFC · Plain and TLS port pairs · Mail ports: smtp, submission, imap and pop3