knownports / Port ranges / 500–599
System PortsPorts 500–599
IANA lists at least one assignment on 99 of the 100 numbers from 500 to 599, 99.0%.
Ports with their own page: 514 shell
Every assigned number from 500 to 599
500–599 · 99 numbers assigned
| Port | Service | Protocols | Label | Registered |
|---|---|---|---|---|
| 500 | isakmp | TCPUDP | isakmp | — |
| 501 | stmf | TCPUDP | STMF | — |
| 502 | mbap | TCPUDP | Modbus Application Protocol | — |
| 503 | intrinsa | TCPUDP | Intrinsa | — |
| 504 | citadel | TCPUDP | citadel | — |
| 505 | mailbox-lm | TCPUDP | mailbox-lm | — |
| 506 | ohimsrv | TCPUDP | ohimsrv | — |
| 507 | crs | TCPUDP | crs | — |
| 508 | xvttp | TCPUDP | xvttp | — |
| 509 | snare | TCPUDP | snare | — |
| 510 | fcp | TCPUDP | FirstClass Protocol | — |
| 511 | passgo | TCPUDP | PassGo | — |
| 512 | biffcomsatexec | TCPUDP | used by mail system to notify users of new mail received; currently receives messages only from processes on the same machine — remote process execution; authentication performed using passwords and UNIX login names | — |
| 513 | loginwho | TCPUDP | remote login a la telnet; automatic authentication performed based on priviledged port numbers and distributed data bases which identify "authentication domains" maintains data bases showing who's logged in to machines on a local net and the load average of the machine | — |
| 514 | shellsyslog | TCPUDP | cmd like exec, but automatic authentication is performed as for login server — | — |
| 515 | printer | TCPUDP | spooler | — |
| 516 | videotex | TCPUDP | videotex | — |
| 517 | talk | TCPUDP | like tenex link, but across machine - unfortunately, doesn't use link protocol (this is actually just a rendezvous port from which a tcp connection is established) | — |
| 518 | ntalk | TCPUDP | — | — |
| 519 | utime | TCPUDP | unixtime | — |
| 520 | efsrouter | TCPUDP | extended file name server local routing process (on site); uses variant of Xerox NS routing information protocol - RIP | — |
| 521 | ripng | TCPUDP | ripng | — |
| 522 | ulp | TCPUDP | ULP | — |
| 523 | ibm-db2 | TCPUDP | IBM-DB2 | — |
| 524 | ncp | TCPUDP | NCP | — |
| 525 | timed | TCPUDP | timeserver | — |
| 526 | tempo | TCPUDP | newdate | — |
| 527 | stx | TCPUDP | Stock IXChange | — |
| 528 | custix | TCPUDP | Customer IXChange | — |
| 529 | irc-serv | TCPUDP | IRC-SERV | — |
| 530 | courier | TCPUDP | rpc | — |
| 531 | conference | TCPUDP | chat | — |
| 532 | netnews | TCPUDP | readnews | — |
| 533 | netwall | TCPUDP | for emergency broadcasts | — |
| 534 | windream | TCPUDP | windream Admin | — |
| 535 | iiop | TCPUDP | iiop | — |
| 536 | opalis-rdv | TCPUDP | opalis-rdv | — |
| 537 | nmsp | TCPUDP | Networked Media Streaming Protocol | — |
| 538 | gdomap | TCPUDP | gdomap | — |
| 539 | apertus-ldp | TCPUDP | Apertus Technologies Load Determination | — |
| 540 | uucp | TCPUDP | uucpd | — |
| 541 | uucp-rlogin | TCPUDP | uucp-rlogin | — |
| 542 | commerce | TCPUDP | commerce | — |
| 543 | klogin | TCPUDP | — | — |
| 544 | kshell | TCPUDP | krcmd | — |
| 545 | appleqtcsrvr | TCPUDP | appleqtcsrvr | — |
| 546 | dhcpv6-client | TCPUDP | DHCPv6 Client | — |
| 547 | dhcpv6-server | TCPUDP | DHCPv6 Server | — |
| 548 | afpovertcp | TCPUDP | AFP over TCP | — |
| 549 | idfp | TCPUDP | IDFP | — |
| 550 | new-rwho | TCPUDP | new-who | — |
| 551 | cybercash | TCPUDP | cybercash | — |
| 552 | devshr-nts | TCPUDP | DeviceShare | — |
| 553 | pirp | TCPUDP | pirp | — |
| 554 | rtsp | TCPUDP | Real Time Streaming Protocol (RTSP) | — |
| 555 | dsf | TCPUDP | — | — |
| 556 | remotefs | TCPUDP | rfs server | — |
| 557 | openvms-sysipc | TCPUDP | openvms-sysipc | — |
| 558 | sdnskmp | TCPUDP | SDNSKMP | — |
| 559 | teedtap | TCPUDP | TEEDTAP | — |
| 560 | rmonitor | TCPUDP | rmonitord | — |
| 561 | monitor | TCPUDP | — | — |
| 562 | chshell | TCPUDP | chcmd | — |
| 563 | nntps | TCPUDP | nntp protocol over TLS/SSL (was snntp) | — |
| 564 | 9pfs | TCPUDP | plan 9 file service | — |
| 565 | whoami | TCPUDP | whoami | — |
| 566 | streettalk | TCPUDP | streettalk | — |
| 567 | banyan-rpc | TCPUDP | banyan-rpc | — |
| 568 | ms-shuttle | TCPUDP | microsoft shuttle | — |
| 569 | ms-rome | TCPUDP | microsoft rome | — |
| 570 | meter | TCPUDP | demon | — |
| 571 | meter | TCPUDP | udemon | — |
| 572 | sonar | TCPUDP | sonar | — |
| 573 | banyan-vip | TCPUDP | banyan-vip | — |
| 574 | ftp-agent | TCPUDP | FTP Software Agent System | — |
| 575 | vemmi | TCPUDP | VEMMI | — |
| 576 | ipcd | TCPUDP | ipcd | — |
| 577 | vnas | TCPUDP | vnas | — |
| 578 | ipdd | TCPUDP | ipdd | — |
| 579 | decbsrv | TCPUDP | decbsrv | — |
| 580 | sntp-heartbeat | TCPUDP | SNTP HEARTBEAT | — |
| 581 | bdp | TCPUDP | Bundle Discovery Protocol | — |
| 582 | scc-security | TCPUDP | SCC Security | — |
| 583 | philips-vc | TCPUDP | Philips Video-Conferencing | — |
| 584 | keyserver | TCPUDP | Key Server | — |
| 585 | entry removed | |||
| 586 | password-chg | TCPUDP | Password Change | — |
| 587 | submission | TCPUDP | Message Submission | — |
| 588 | cal | TCPUDP | CAL | — |
| 589 | eyelink | TCPUDP | EyeLink | — |
| 590 | tns-cml | TCPUDP | TNS CML | — |
| 591 | http-alt | TCPUDP | FileMaker, Inc. - HTTP Alternate (see Port 80) | — |
| 592 | eudora-set | TCPUDP | Eudora Set | — |
| 593 | http-rpc-epmap | TCPUDP | HTTP RPC Ep Map | — |
| 594 | tpip | TCPUDP | TPIP | — |
| 595 | cab-protocol | TCPUDP | CAB Protocol | — |
| 596 | smsd | TCPUDP | SMSD | — |
| 597 | ptcnameservice | TCPUDP | PTC Name Service | — |
| 598 | sco-websrvrmg3 | TCPUDP | SCO Web Server Manager 3 | — |
| 599 | acp | TCPUDP | Aeolon Core Protocol | — |