Every TCP and UDP port documented on this site, listed by number. Each entry links to that port’s own page: what the port is registered for, what commonly runs on it, and what intrusion detection rules and malware reports say about it. A port that has no page here can still be looked up with the Port Lookup.
IANA splits the port numbers from 0 to 65535 into three ranges. Well-known ports, 0 to 1023, are assigned to core services such as HTTP, DNS and SSH. Registered ports, 1024 to 49151, are claimed by software makers and projects for their own services. Dynamic or private ports, 49152 to 65535, are not assigned at all; operating systems use them for the client side of connections. The well-known range is listed below. The other ranges each have their own page.
Well-known ports, 0 to 1023
375 ports in this range have their own page.
- UDP port 7 echo
- UDP port 9 discard
- UDP port 11 systat
- TCP port 15
- UDP port 17 qotd
- TCP port 18 msp
- TCP port 19 chargen
- UDP port 19 chargen
- TCP port 20 ftp-data
- TCP port 21 FTP (File Transfer Protocol)
- UDP port 21 FTP (File Transfer Protocol)
- TCP port 22 SSH (Secure Shell)
- UDP port 22 SSH (Secure Shell)
- TCP port 23 Telnet (Legacy Remote Terminal)
- UDP port 23 Telnet (Legacy Remote Terminal)
- TCP port 24
- UDP port 24
- TCP port 25 SMTP (Simple Mail Transfer Protocol)
- UDP port 25 SMTP (Simple Mail Transfer Protocol)
- TCP port 27 nsw-fe
- TCP port 30
- TCP port 35
- UDP port 35
- TCP port 36
- TCP port 38 rap
- UDP port 38 rap
- TCP port 41 graphics
- TCP port 42 name
- UDP port 42 name
- TCP port 43 nicname
- TCP port 44 mpm-flags
- UDP port 44 mpm-flags
- TCP port 45 mpm
- TCP port 46 mpm-snd
- UDP port 46 mpm-snd
- TCP port 47
- UDP port 47
- UDP port 48 auditd
- UDP port 49 tacacs
- TCP port 51
- UDP port 51
- TCP port 52 xns-time
- UDP port 52 xns-time
- TCP port 53 DNS (Domain Name System)
- UDP port 53 DNS (Domain Name System)
- TCP port 54 xns-ch
- TCP port 55 isi-gl
- UDP port 55 isi-gl
- UDP port 56 xns-auth
- TCP port 57
- UDP port 57
- TCP port 58 xns-mail
- TCP port 59
- UDP port 59
- UDP port 62 acas
- TCP port 63 whois++
- UDP port 63 whois++
- TCP port 64 covia
- TCP port 65 tacacs-ds
- TCP port 66 sql*net
- UDP port 66 sql*net
- TCP port 67 DHCP Server (Dynamic Host Configuration Protocol)
- UDP port 67 DHCP Server (Dynamic Host Configuration Protocol)
- TCP port 68 DHCP Client (Dynamic Host Configuration Protocol)
- UDP port 68 DHCP Client (Dynamic Host Configuration Protocol)
- UDP port 69 tftp
- TCP port 70 gopher
- TCP port 74 netrjs-4
- UDP port 75
- TCP port 78 vettcp
- TCP port 79 finger
- TCP port 80 HTTP (Hypertext Transfer Protocol)
- UDP port 80 HTTP (Hypertext Transfer Protocol)
- TCP port 81
- UDP port 81
- TCP port 82 xfer
- TCP port 83 mit-ml-dev
- TCP port 84 ctf
- TCP port 85 mit-ml-dev
- UDP port 85 mit-ml-dev
- TCP port 86 mfcobol
- TCP port 87
- TCP port 88 kerberos
- UDP port 88 kerberos
- TCP port 89 su-mit-tg
- UDP port 89 su-mit-tg
- TCP port 90 dnsix
- UDP port 90 dnsix
- TCP port 91 mit-dov
- TCP port 96 dixie
- UDP port 96 dixie
- UDP port 97 swift-rvf
- TCP port 99 metagram
- TCP port 100
- TCP port 101 hostname
- TCP port 104 acr-nema
- UDP port 106 3com-tsmux
- TCP port 110 POP3 (Post Office Protocol version 3)
- UDP port 110 POP3 (Post Office Protocol version 3)
- TCP port 111 sunrpc / portmap (RPC Service Directory)
- UDP port 111 sunrpc / portmap (RPC Service Directory)
- TCP port 112 mcidas
- UDP port 112 mcidas
- TCP port 113 auth
- TCP port 114
- TCP port 117 uucp-path
- TCP port 119 nntp
- UDP port 120 cfdptkt
- TCP port 121 erpc
- UDP port 121 erpc
- UDP port 123 ntp
- UDP port 124 ansatrader
- TCP port 125 locus-map
- TCP port 127 locus-con
- UDP port 128 gss-xlicen
- TCP port 130 cisco-fna
- TCP port 131 cisco-tna
- TCP port 132 cisco-sys
- TCP port 133 statsrv
- TCP port 134 ingres-net
- UDP port 134 ingres-net
- TCP port 135 epmap
- UDP port 135 epmap
- TCP port 136 profile
- UDP port 136 profile
- TCP port 137 NetBIOS Name Service (NetBIOS-NS)
- UDP port 137 NetBIOS Name Service (NetBIOS-NS)
- TCP port 138 netbios-dgm
- UDP port 138 netbios-dgm
- TCP port 139 NetBIOS Session Service (SMB over NetBIOS)
- UDP port 139 NetBIOS Session Service (SMB over NetBIOS)
- TCP port 141 emfis-cntl
- TCP port 142 bl-idm
- TCP port 143 IMAP (Internet Message Access Protocol)
- UDP port 143 IMAP (Internet Message Access Protocol)
- TCP port 145 uaac
- UDP port 145 uaac
- TCP port 146 iso-tp0
- TCP port 147 iso-ip
- TCP port 148 jargon
- TCP port 149 aed-512
- TCP port 151 hems
- UDP port 153 sgmp
- TCP port 159 nss-routing
- TCP port 161 SNMP (Simple Network Management Protocol)
- UDP port 161 SNMP (Simple Network Management Protocol)
- TCP port 162 SNMP Trap (Asynchronous Notifications)
- UDP port 162 SNMP Trap (Asynchronous Notifications)
- UDP port 165 xns-courier
- UDP port 167 namp
- TCP port 173 xyplex-mux
- UDP port 177 xdmcp
- TCP port 179 bgp
- TCP port 183 ocbinder
- TCP port 185 remote-kis
- TCP port 187 aci
- TCP port 189 qft
- TCP port 190 gacp
- TCP port 191 prospero
- UDP port 191 prospero
- TCP port 193 srmp
- UDP port 193 srmp
- TCP port 200 src
- TCP port 203 at-3
- TCP port 211 914c/g
- TCP port 214 vmpwscs
- TCP port 219 uarps
- TCP port 220 imap3
- TCP port 221 fln-spx
- TCP port 222 rsh-spx
- TCP port 223 cdc
- TCP port 224 masqdialer
- TCP port 243 sur-meas
- TCP port 256 rap
- TCP port 257 set
- TCP port 283 rescap
- TCP port 310 bhmds
- TCP port 311 asip-webadmin
- TCP port 313 magenta-logic
- UDP port 319 ptp-event
- TCP port 322 rtsps
- TCP port 333 texar
- TCP port 359
- TCP port 364 aurora-cmgr
- TCP port 366 odmr
- TCP port 369 rpc2portmap
- TCP port 376 nip
- TCP port 383 hp-alarm-mgr
- TCP port 386 asa
- TCP port 389 LDAP (Lightweight Directory Access Protocol)
- UDP port 389 LDAP (Lightweight Directory Access Protocol)
- TCP port 400 osb-sd
- TCP port 403 decap
- TCP port 404 nced
- TCP port 414 infoseek
- TCP port 420 smpte
- TCP port 422 ariel3
- TCP port 427 svrloc
- UDP port 427 svrloc
- TCP port 433 nnsp
- UDP port 433 nnsp
- TCP port 434 mobileip-agent
- UDP port 434 mobileip-agent
- TCP port 440 sgcp
- TCP port 441 decvms-sysmgt
- TCP port 442 cvc-hostd
- TCP port 443 HTTPS (HTTP over TLS)
- UDP port 443 HTTPS (HTTP over TLS)
- TCP port 444 snpp
- TCP port 445 SMB / Microsoft-DS (Windows File Sharing)
- UDP port 445 SMB / Microsoft-DS (Windows File Sharing)
- TCP port 446 ddm-rdb
- TCP port 447 ddm-dfm
- TCP port 448 ddm-ssl
- TCP port 449 as-servermap
- TCP port 450 tserver
- TCP port 453 creativeserver
- TCP port 456 macon-tcp
- UDP port 456 macon-udp
- TCP port 457 scohelp
- TCP port 463 alpes
- TCP port 465 SMTPS (Implicit-TLS Mail Submission)
- UDP port 465 SMTPS (Implicit-TLS Mail Submission)
- TCP port 475 tcpnethaspsrv
- TCP port 476 tn-tl-fd1
- TCP port 477 ss7ns
- UDP port 477 ss7ns
- TCP port 480 iafdbase
- TCP port 488 gss-http
- TCP port 489 nest-protocol
- TCP port 491 go-login
- TCP port 495 intecourier
- TCP port 500 ISAKMP / IKE (IPsec Key Exchange)
- UDP port 500 ISAKMP / IKE (IPsec Key Exchange)
- TCP port 501 stmf
- TCP port 502 Modbus TCP
- UDP port 502 Modbus TCP
- TCP port 503 intrinsa
- TCP port 504 citadel
- TCP port 505 mailbox-lm
- TCP port 507 crs
- TCP port 512 exec
- TCP port 513 login
- UDP port 513 who
- TCP port 514 syslog / rsh (Network Logging / Legacy Remote Shell)
- UDP port 514 syslog / rsh (Network Logging / Legacy Remote Shell)
- TCP port 515 printer
- TCP port 516 videotex
- UDP port 518 ntalk
- TCP port 520 efs
- UDP port 520 router
- TCP port 521 ripng
- UDP port 521 ripng
- TCP port 522 ulp
- TCP port 534 windream
- TCP port 538 gdomap
- TCP port 540 uucp
- TCP port 541 uucp-rlogin
- TCP port 543 klogin
- TCP port 544 kshell
- UDP port 546 dhcpv6-client
- TCP port 547 dhcpv6-server
- TCP port 548 afpovertcp
- TCP port 549 idfp
- TCP port 552 devshr-nts
- TCP port 553 pirp
- UDP port 553 pirp
- TCP port 554 rtsp
- TCP port 555 dsf
- UDP port 555 dsf
- TCP port 557 openvms-sysipc
- TCP port 558 sdnskmp
- TCP port 564 9pfs
- TCP port 566 streettalk
- TCP port 567 banyan-rpc
- TCP port 576 ipcd
- TCP port 578 ipdd
- TCP port 583 philips-vc
- TCP port 585
- TCP port 586 password-chg
- TCP port 587 SMTP Submission (Authenticated Mail Sending)
- UDP port 587 SMTP Submission (Authenticated Mail Sending)
- TCP port 589 eyelink
- TCP port 591 http-alt
- TCP port 593 http-rpc-epmap
- TCP port 597 ptcnameservice
- TCP port 617 sco-dtmgr
- UDP port 623 asf-rmcp
- TCP port 625 dec_dlm
- TCP port 631 ipp
- TCP port 635 rlzdbase
- UDP port 635 rlzdbase
- TCP port 636 LDAPS (LDAP over TLS)
- UDP port 636 LDAPS (LDAP over TLS)
- TCP port 645 pssc
- TCP port 655 tinc
- TCP port 660 mac-srvr-admin
- TCP port 664 oob-ws-https
- UDP port 664 asf-secure-rmcp
- TCP port 666 doom
- UDP port 666 doom
- TCP port 667 disclose
- TCP port 668 mecomm
- UDP port 668 mecomm
- TCP port 673 cimplex
- UDP port 678 ggf-ncp
- TCP port 686 hcp-wismar
- TCP port 689 nmap
- TCP port 705 agentx
- TCP port 721
- TCP port 749 kerberos-adm
- TCP port 751 pump
- TCP port 771 rtip
- TCP port 777 multiling-http
- UDP port 777 multiling-http
- TCP port 778
- TCP port 780 wpgs
- UDP port 786
- TCP port 799
- TCP port 800 mdbs_daemon
- TCP port 801 device
- TCP port 808
- TCP port 818
- UDP port 848 gdoi
- TCP port 873 rsync
- TCP port 886 iclcnet-locate
- TCP port 887 iclcnet_svinfo
- TCP port 888 cddbp
- TCP port 900 omginitialrefs
- UDP port 900 omginitialrefs
- TCP port 901 smpnameres
- TCP port 902 ideafarm-door
- TCP port 911 xact-backup
- TCP port 972
- TCP port 989 ftps-data
- TCP port 990 ftps
- TCP port 991 nas
- TCP port 992 telnets
- TCP port 993 IMAPS (IMAP over TLS)
- UDP port 993 IMAPS (IMAP over TLS)
- TCP port 994
- TCP port 995 POP3S (POP3 over TLS)
- UDP port 995 POP3S (POP3 over TLS)
- TCP port 996 vsinet
- TCP port 997 maitrd
- UDP port 998 puparp
- TCP port 999 garcon
- UDP port 999 puprouter
- TCP port 1000 cadlock2
- UDP port 1000 cadlock2
- TCP port 1001 webpush
- UDP port 1001
- TCP port 1002
- TCP port 1003
- TCP port 1004
- TCP port 1005
- TCP port 1006
- TCP port 1007
- TCP port 1008
- TCP port 1009
- TCP port 1010 surf
- TCP port 1011
- TCP port 1012
- UDP port 1012
- TCP port 1013
- TCP port 1014
- TCP port 1015
- TCP port 1016
- TCP port 1017
- TCP port 1018
- TCP port 1019
- TCP port 1020
- TCP port 1021 exp1
- TCP port 1022 exp2
- TCP port 1023
Not listed? Enter any port number in the Port Lookup to see what the database has on it.