Port number lookup

Search and browse common network port numbers

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Ports

176 matching ports

PortServiceProtocolDescription
1
TCPMUX
TCPTCP Port Service Multiplexer
7
Echo
TCP/UDPEcho Protocol
9
Discard
TCP/UDPDiscard Protocol
13
Daytime
TCP/UDPDaytime Protocol
17
QOTD
TCP/UDPQuote of the Day
19
Chargen
TCP/UDPCharacter Generator
20
FTP-DATACommon
TCPFTP Data Transfer
21
FTPCommon
TCPFTP Control
22
SSHCommon
TCPSecure Shell
23
TelnetCommon
TCPTelnet Protocol
25
SMTPCommon
TCPSimple Mail Transfer Protocol
37
Time
TCP/UDPTime Protocol
42
WINS
TCP/UDPWindows Internet Name Service
43
WHOIS
TCPWHOIS Protocol
49
TACACS
TCP/UDPTerminal Access Controller Access-Control System
53
DNSCommon
TCP/UDPDomain Name System
67
DHCP ServerCommon
UDPDynamic Host Configuration Protocol Server
68
DHCP ClientCommon
UDPDynamic Host Configuration Protocol Client
69
TFTP
UDPTrivial File Transfer Protocol
70
Gopher
TCPGopher Protocol
79
Finger
TCPFinger Protocol
80
HTTPCommon
TCPHypertext Transfer Protocol
88
Kerberos
TCP/UDPKerberos Authentication
109
POP2
TCPPost Office Protocol v2
110
POP3Common
TCPPost Office Protocol v3
111
RPC
TCP/UDPRemote Procedure Call
113
Ident
TCPIdentification Protocol
115
SFTP
TCPSimple File Transfer Protocol
118
SQL Services
TCP/UDPSQL Services
119
NNTP
TCPNetwork News Transfer Protocol
123
NTPCommon
UDPNetwork Time Protocol
135
EPMAP
TCP/UDPMicrosoft EPMAP (RPC)
137
NetBIOS-NS
UDPNetBIOS Name Service
138
NetBIOS-DGM
UDPNetBIOS Datagram Service
139
NetBIOS-SSN
TCPNetBIOS Session Service
143
IMAPCommon
TCPInternet Message Access Protocol
161
SNMPCommon
UDPSimple Network Management Protocol
162
SNMP Trap
UDPSNMP Trap
179
BGP
TCPBorder Gateway Protocol
194
IRC
TCPInternet Relay Chat
201
AppleTalk
TCP/UDPAppleTalk Routing Maintenance
264
BGMP
TCP/UDPBorder Gateway Multicast Protocol
318
TSP
TCP/UDPTime Stamp Protocol
389
LDAPCommon
TCPLightweight Directory Access Protocol
443
HTTPSCommon
TCPHTTP Secure
445
SMBCommon
TCPServer Message Block
464
Kerberos Change
TCP/UDPKerberos Password Change
465
SMTPSCommon
TCPSMTP over SSL
500
IKE
UDPInternet Key Exchange (IPsec)
512
rexec
TCPRemote Execution

1-50 / 176

What is a port number?

A port number is a 16-bit unsigned integer (0-65535) used to identify specific processes or services on a networked device. Ports allow multiple network services to run on the same IP address.

System ports (0–1023):

Also called "well-known ports", reserved for common services like HTTP (80), HTTPS (443), SSH (22).

Registered ports (1024–49151):

Used by applications and services registered with IANA, such as MySQL (3306), PostgreSQL (5432).

Dynamic ports (49152–65535):

Also called "ephemeral ports", used for temporary connections by client applications.

How to use

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