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Question: Where can I find a list of network port numbers that tell which service is known to run on them?

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Introduction:
Some of you might be interested to know which services or applications run on what specific port numbers. Below I will have a detailed list of ports that you can go through to find what you are looking for. However, Please keep in mind that almost any service can run on any port. FTP (File Transfer Protocal) which is a popular method of file transferring in the web hosting industry can run on port 12345 instead of port 21 as most of you are used too. There is a set of standards put into place to not confuse people. People don't have to follow the rules if you don't want to, but there are pros and cons to this.

Pro's:
The pro's of running a service like FTP on port 12345 instead of port 21 are? Unauthorized FTP clients, Users, or Hackers will not expect this kind of service to be running on port 12345 and will give you a slight extra layer of Brute Force security attacks on a FTP account. This will also make your FTP server run in a more private fashion if this is what you are aiming for when running your service on a non standard port number.

Con's:
Maybe you are a CEO or a System Administrator for a web hosting company. You have a client base close to 800 clients that use your FTP service on a regular basis. While all FTP clients such as WS_FTP, FileZilla, Core_FTP, and Bulletproof FTP as configured to connect to servers on port: 21 by default, your running this service on port: 12345 and your clients are unable to connect unless first notified they should be using port: 12345 instead. Most people using this FTP service can barely use it let alone configure a port number. Changing your FTP service to run on it's standard port: 21 will cut back on clients from contacting Technical Support or from sending you inquires why they cannot connect on FTP.

Your decision:
These Pro's and Con's examples above apply to all services and not just FTP. However, If you have a little bit of understanding of the final effects of setting up services on their non standard ports, you should be able to make a accurate decision what is best for you and your server.

The Port List:

This list was gathered from a few known sources online. To my knowledge as a System Administrator, it appears to be very accurate according to "Port Standards". The blank port numbers mean there is not a known standard service tied to that port number at the time of this writing. If you would like to add a service to a blank port number below, please post in the comments section below and include a couple of links that prove this service is intended to run on this port number.

Port: 0
Port: 1 tcpmux
Port: 3
Port: 4
Port: 5 rje
Port: 7 echo
Port: 9 discard
Port: 11 systat
Port: 13 daytime
Port: 15 netstat
Port: 17 qotd
Port: 18 send/rwp
Port: 19 chargen
Port: 20 ftp-data
Port: 21 ftp
Port: 22 ssh, pcAnywhere
Port: 23 Telnet
Port: 25 SMTP
Port: 27 ETRN
Port: 29 msg-icp
Port: 31 msg-auth
Port: 33 dsp
Port: 37 time
Port: 38 RAP
Port: 39 rlp
Port: 40
Port: 41
Port: 42 nameserv, WINS
Port: 43 whois, nickname
Port: 49 TACACS, Login Host Protocol
Port: 50 RMCP, re-mail-ck
Port: 53 DNS
Port: 57 MTP
Port: 59 NFILE
Port: 63 whois++
Port: 66 sql*net
Port: 67 bootps
Port: 68 bootpd/dhcp
Port: 69 Trivial File Transfer Protocol (tftp)
Port: 70 Gopher
Port: 79 finger
Port: 80 www-http
Port: 87
Port: 88 Kerberos, WWW
Port: 95 supdup
Port: 96 DIXIE
Port: 98 linuxconf
Port: 101 HOSTNAME
Port: 102 ISO, X.400, ITOT
Port: 105 cso
Port: 106 poppassd
Port: 109 POP2
Port: 110 POP3
Port: 111 Sun RPC Portmapper
Port: 113 identd/auth
Port: 115 sftp
Port: 116
Port: 117 uucp
Port: 118
Port: 119 NNTP
Port: 120 CFDP
Port: 123 NTP
Port: 124 SecureID
Port: 129 PWDGEN
Port: 133 statsrv
Port: 135 loc-srv/epmap
Port: 137 netbios-ns
Port: 138 netbios-dgm (UDP)
Port: 139 NetBIOS
Port: 143 IMAP
Port: 144 NewS
Port: 150
Port: 152 BFTP
Port: 153 SGMP
Port: 156
Port: 161 SNMP
Port: 175 vmnet
Port: 177 XDMCP
Port: 178 NextStep Window Server
Port: 179 BGP
Port: 180 SLmail admin
Port: 199 smux
Port: 210 Z39.50
Port: 213
Port: 218 MPP
Port: 220 IMAP3
Port: 256
Port: 257
Port: 258
Port: 259 ESRO
Port: 264 FW1_topo
Port: 311 Apple WebAdmin
Port: 350 MATIP type A
Port: 351 MATIP type B
Port: 360
Port: 363 RSVP tunnel
Port: 366 ODMR (On-Demand Mail Relay)
Port: 371
Port: 387 AURP (AppleTalk Update-Based Routing Protocol)
Port: 389 LDAP
Port: 407 Timbuktu
Port: 427
Port: 434 Mobile IP
Port: 443 ssl
Port: 444 snpp, Simple Network Paging Protocol
Port: 445 SMB
Port: 458 QuickTime TV/Conferencing
Port: 468 Photuris
Port: 475
Port: 500 ISAKMP, pluto
Port: 511
Port: 512 biff, rexec
Port: 513 who, rlogin
Port: 514 syslog, rsh
Port: 515 lp, lpr, line printer
Port: 517 talk
Port: 520 RIP (Routing Information Protocol)
Port: 521 RIPng
Port: 522 ULS
Port: 531 IRC
Port: 543 KLogin, AppleShare over IP
Port: 545 QuickTime
Port: 548 AFP
Port: 554 Real Time Streaming Protocol
Port: 555 phAse Zero
Port: 563 NNTP over SSL
Port: 575 VEMMI
Port: 581 Bundle Discovery Protocol
Port: 593 MS-RPC
Port: 608 SIFT/UFT
Port: 626 Apple ASIA
Port: 631 IPP (Internet Printing Protocol)
Port: 635 mountd
Port: 636 sldap
Port: 642 EMSD
Port: 648 RRP (NSI Registry Registrar Protocol)
Port: 655 tinc
Port: 660 Apple MacOS Server Admin
Port: 666 Doom
Port: 674 ACAP
Port: 687 AppleShare IP Registry
Port: 700 buddyphone
Port: 705 AgentX for SNMP
Port: 901 swat, realsecure
Port: 993 s-imap
Port: 995 s-pop
Port: 999
Port: 1024
Port: 1025
Port: 1050
Port: 1062 Veracity
Port: 1080 SOCKS
Port: 1085 WebObjects
Port: 1100
Port: 1105
Port: 1114
Port: 1227 DNS2Go
Port: 1234
Port: 1243 SubSeven
Port: 1338 Millennium Worm
Port: 1352 Lotus Notes
Port: 1381 Apple Network License Manager
Port: 1417 Timbuktu
Port: 1418 Timbuktu
Port: 1419 Timbuktu
Port: 1420
Port: 1433 Microsoft SQL Server
Port: 1434 Microsoft SQL Monitor
Port: 1477
Port: 1478
Port: 1490
Port: 1494 Citrix ICA Protocol
Port: 1498
Port: 1500
Port: 1503 T.120
Port: 1521 Oracle SQL
Port: 1522
Port: 1524
Port: 1525 prospero
Port: 1526 prospero
Port: 1527 tlisrv
Port: 1529
Port: 1547
Port: 1604 Citrix ICA, MS Terminal Server
Port: 1645 RADIUS Authentication
Port: 1646 RADIUS Accounting
Port: 1680 Carbon Copy
Port: 1701 L2TP/LSF
Port: 1717 Convoy
Port: 1720 H.323/Q.931
Port: 1723 PPTP control port
Port: 1731
Port: 1755 Windows Media .asf
Port: 1758 TFTP multicast
Port: 1761
Port: 1762
Port: 1808
Port: 1812 RADIUS server
Port: 1813 RADIUS accounting
Port: 1818 ETFTP
Port: 1968
Port: 1973 DLSw DCAP/DRAP
Port: 1975
Port: 1978
Port: 1979
Port: 1985 HSRP
Port: 1999 Cisco AUTH
Port: 2000
Port: 2001 glimpse
Port: 2005
Port: 2010
Port: 2023
Port: 2048
Port: 2049 NFS
Port: 2064 distributed.net
Port: 2065 DLSw
Port: 2066 DLSw
Port: 2080
Port: 2106 MZAP
Port: 2140 DeepThroat
Port: 2301 Compaq Insight Management Web Agents
Port: 2327 Netscape Conference
Port: 2336 Apple UG Control
Port: 2345
Port: 2427 MGCP gateway
Port: 2504 WLBS
Port: 2535 MADCAP
Port: 2543 sip
Port: 2565
Port: 2592 netrek
Port: 2727 MGCP call agent
Port: 2766
Port: 2628 DICT
Port: 2998 ISS Real Secure Console Service Port
Port: 3000 Firstclass
Port: 3001
Port: 3031 Apple AgentVU
Port: 3052
Port: 3128 squid
Port: 3130 ICP
Port: 3150 DeepThroat
Port: 3264 ccmail
Port: 3283 Apple NetAssitant
Port: 3288 COPS
Port: 3305 ODETTE
Port: 3306 mySQL
Port: 3352
Port: 3389 RDP Protocol (Terminal Server)
Port: 3520
Port: 3521 netrek
Port: 3879
Port: 4000 icq, command-n-conquer
Port: 4045
Port: 4144
Port: 4242
Port: 4321 rwhois
Port: 4333 mSQL
Port: 4444
Port: 47017
Port: 4827 HTCP
Port: 4899 Radmin (Remote Administrator)
Port: 5000
Port: 5001
Port: 5002
Port: 5004 RTP
Port: 5005 RTP
Port: 5010 Yahoo! Messenger
Port: 5050
Port: 5060 SIP
Port: 5135
Port: 5150
Port: 5190 AIM
Port: 5222
Port: 5353
Port: 5400
Port: 5500 securid
Port: 5501 securidprop
Port: 5300
Port: 5423 Apple VirtualUser
Port: 5555
Port: 5556
Port: 5631 PCAnywhere data
Port: 5632 PCAnywhere
Port: 5678
Port: 5800 VNC
Port: 5801 VNC
Port: 5900 VNC
Port: 5901 VNC
Port: 5843
Port: 6000 X Windows
Port: 6112 BattleNet
Port: 6050
Port: 6499
Port: 6500
Port: 6502 Netscape Conference
Port: 6547
Port: 6548
Port: 6549
Port: 6666
Port: 6667 IRC
Port: 6670 VocalTec Internet Phone, DeepThroat
Port: 6699 napster
Port: 6776 Sub7
Port: 6968
Port: 6969
Port: 6970 RTP
Port: 6971
Port: 7000
Port: 7007 MSBD, Windows Media encoder
Port: 7070 RealServer/QuickTime
Port: 7161
Port: 7323
Port: 7777
Port: 7778 Unreal
Port: 7640
Port: 7648 CU-SeeMe
Port: 7649 CU-SeeMe
Port: 7654
Port: 8000
Port: 8002
Port: 8010 WinGate 2.1
Port: 8080 HTTP
Port: 8100
Port: 8181 HTTP
Port: 8383 IMail WWW
Port: 8765
Port: 8875 napster
Port: 8888 napster
Port: 8890
Port: 9000
Port: 9090
Port: 9200
Port: 9704
Port: 9669
Port: 9876
Port: 9989
Port: 10008 cheese worm
Port: 10752
Port: 12345
Port: 11371 PGP 5 Keyserver
Port: 12346
Port: 13000
Port: 13223 PowWow
Port: 13224 PowWow
Port: 14000
Port: 14237 Palm
Port: 14238 Palm
Port: 14690
Port: 16969
Port: 18888 LiquidAudio
Port: 21157 Activision
Port: 22555
Port: 22703
Port: 22793
Port: 23213 PowWow
Port: 23214 PowWow
Port: 23456 EvilFTP
Port: 26000 Quake
Port: 27000
Port: 27001 QuakeWorld
Port: 27010 Half-Life
Port: 27015 Half-Life
Port: 27374
Port: 27444
Port: 27665
Port: 27910
Port: 27960 QuakeIII
Port: 28000
Port: 28001
Port: 28002
Port: 28003
Port: 28004
Port: 28005
Port: 28006
Port: 28007
Port: 28008
Port: 30029 AOL Admin
Port: 30100
Port: 30101
Port: 30102
Port: 30103
Port: 30303
Port: 30464
Port: 31335
Port: 31337 Back Orifice
Port: 32000
Port: 32771
Port: 32777 rpc.walld
Port: 34555
Port: 40193 Novell
Port: 41524 arcserve discovery
Port: 45000 Cisco NetRanger postofficed
Port: 50505
Port: 52901
Port: 54321
Port: 61000
Port: 65301
Port: Multicast hidden
Port: ICMP Type hidden
Port: 9998
Port: 32773 rpc.ttdbserverd
Port: 32776 rpc.spray
Port: 32779 rpc.cmsd
Port: 38036 timestep