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 TCP/UDP tools and library
About TCP/UDP tools
Find port number
Find port number by word
Check all open ports
IP range port scanner
 Ranges of ports in library
TCP ports list range 0-1024
TCP ports list range 1024-7000
TCP ports list range 7000-20000
TCP ports list range 20000-49151
UDP ports list range 0-1024
UDP ports list range 1024-7000
UDP ports list range 7000-20000
UDP ports list range 20000-49151

ports range 501-521,ports list, biggest ports tcp/udp library database

On this page you can find tools for search TCP Port Numbers and UDP Port Numbers.
Current service contain the biggest tcp udp port list. Port search going through 4 library (database),
total number of records are about 22000 (in 3 times more that in other service).
Library's:
  • IANA port numbers assignments library (database) - The Internet Assigned Numbers Authority (IANA) is responsible for maintaining the official assignments of port numbers for specific uses.
  • WIKI port numbers assignments library (database) - Good known wikipedia ports library
  • Gasmy library, Beta Library - good known manualy created port databases.
In computer networking, the protocols of the Transport Layer of the Internet Protocol Suite, most notably the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP),
use a numerical identifier for the data structures of the endpoints for host-to-host communications.
Such an endpoint is known as a port and the identifier is the port number.
The Registered Ports are listed by the IANA and on most systems can be used by ordinary user processes or programs executed by ordinary users. Thats why most part of new programs that useing "sockets" bind to ports in this range. Ports are used in the TCP [RFC793] to name the ends of logical connections which carry long term conversations. For the purpose of providing services to unknown callers, a service contact port is defined.
The IANA registers uses of these ports as a convenience to the community. About half part of numbers from range are free at this moment. To the extent possible, these same situation with for UDP ports [RFC768]. The Registered Ports are in the range 1024-49151.
It's very easy to search, just input tcp ports range or udp ports range - example2 (or in list format - example1),and 'Go'.

Legend:
no data
- no data available about port in current library
 library name
 port number
 application name
 port description
Example of search port info [list]example of group ports scan
Example of search port info [range]example of group ports scan
TCP UDP
UDP::501-521
port WIKI IANA Linux
port 501 no data
stmfSTMF
no data
port 502
Modbus Protocol
mbapModbus Application Protocol
no data
port 503 no data
intrinsaIntrinsa
no data
port 504
Citadel, multiservice protocol for dedicated clients for the Citadel groupware system
citadelcitadel
no data
port 505 no data
mailbox-lmmailbox-lm
no data
port 506 no data
ohimsrvohimsrv
no data
port 507 no data
crscrs
no data
port 508 no data
xvttpxvttp
no data
port 509 no data
snaresnare
no data
port 510
FirstClass Protocol (FCP), used by FirstClass client/server groupware system
fcpFirstClass Protocol
no data
port 511 no data
passgoPassGo
no data
port 512
comsat, together with biff
comsat
biffused by mail system to notify users of new mail received; currently receives messages only from processes on the same machine
biffcomsat
port 513
Who
no data
whowhod
port 514
Syslog, used for system logging
syslog
no data
port 515 no data
printerspooler
no data
port 516 no data
videotexvideotex
no data
port 517
Talk
no data no data
port 518
NTalk
ntalk
no data
port 519 no data
utimeunixtime
no data
port 520
Routing Information Protocol (RIP)
routerlocal routing process (on site); uses variant of Xerox NS routing information protocol - RIP
route RIP
port 521
Routing Information Protocol Next Generation (RIPng)
ripngripng
no data

The User Datagram Protocol (UDP) is one of the core members of the Internet Protocol Suite, the set of network protocols used for the Internet. With UDP, computer applications can send messages, sometimes known as datagrams, to other hosts on an Internet Protocol (IP) network without requiring prior communications to set up special transmission channels or data paths. UDP is sometimes called the Universal Datagram Protocol. The protocol was designed by David P. Reed in 1980 and formally defined in RFC 768.

In computer networking, the protocols of the Transport Layer of the Internet Protocol Suite, most notably the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP), but also other protocols, use a numerical identifier for the data structures of the endpoints for host-to-host communications. Such an endpoint is known as a port and the identifier is the port number. The Internet Assigned Numbers Authority (IANA) is responsible for maintaining the official assignments of port numbers for specific uses.