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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 27000-28000,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
TCP::27000-28000
port WIKI IANA Linux
port 27000
FlexNet Publisher's License server (from the range of default ports)
PowerBuilder SySAM license server
no data no data
port 27001
FlexNet Publisher's License server (from the range of default ports)
no data no data
port 27002
FlexNet Publisher's License server (from the range of default ports)
no data no data
port 27003
FlexNet Publisher's License server (from the range of default ports)
no data no data
port 27004
FlexNet Publisher's License server (from the range of default ports)
no data no data
port 27005
FlexNet Publisher's License server (from the range of default ports)
no data no data
port 27006
FlexNet Publisher's License server (from the range of default ports)
no data no data
port 27007
FlexNet Publisher's License server (from the range of default ports)
no data no data
port 27008
FlexNet Publisher's License server (from the range of default ports)
no data no data
port 27009
FlexNet Publisher's License server (from the range of default ports)
no data no data
port 27014
Steam, file downloads
no data no data
port 27015
Steam, file downloads
no data no data
port 27016
Steam, file downloads
no data no data
port 27017
Steam, file downloads
no data no data
port 27018
Steam, file downloads
no data no data
port 27019
Steam, file downloads
no data no data
port 27020
Steam, file downloads
no data no data
port 27021
Steam, file downloads
no data no data
port 27022
Steam, file downloads
no data no data
port 27023
Steam, file downloads
no data no data
port 27024
Steam, file downloads
no data no data
port 27025
Steam, file downloads
no data no data
port 27026
Steam, file downloads
no data no data
port 27027
Steam, file downloads
no data no data
port 27028
Steam, file downloads
no data no data
port 27029
Steam, file downloads
no data no data
port 27030
Steam, file downloads
no data no data
port 27031
Steam, file downloads
no data no data
port 27032
Steam, file downloads
no data no data
port 27033
Steam, file downloads
no data no data
port 27034
Steam, file downloads
no data no data
port 27035
Steam, file downloads
no data no data
port 27036
Steam, file downloads
no data no data
port 27037
Steam, file downloads
no data no data
port 27038
Steam, file downloads
no data no data
port 27039
Steam, file downloads
no data no data
port 27040
Steam, file downloads
no data no data
port 27041
Steam, file downloads
no data no data
port 27042
Steam, file downloads
no data no data
port 27043
Steam, file downloads
no data no data
port 27044
Steam, file downloads
no data no data
port 27045
Steam, file downloads
no data no data
port 27046
Steam, file downloads
no data no data
port 27047
Steam, file downloads
no data no data
port 27048
Steam, file downloads
no data no data
port 27049
Steam, file downloads
no data no data
port 27050
Steam, file downloads
no data no data
port 27345 no data
imagepumpImagePump
no data
port 27374 no data no data
asp Address Search Protocol
port 27442 no data
jesmsjcJob controller service
no data
port 27504 no data
kopek-httpheadKopek HTTP Head Port
no data
port 27782 no data
ars-vistaARS VISTA Application
no data
port 27876 no data
astrolinkAstrolink Protocol
no data
port 27999 no data
tw-auth-keyTW Authentication/Key Distribution and
no data
port 28000 no data
nxlmdNX License Manager
no data

The Transmission Control Protocol (TCP) is one of the core protocols of the Internet Protocol Suite. TCP is so central that the entire suite is often referred to as "TCP/IP." Whereas IP handles lower-level transmissions from computer to computer as a message makes its way across the Internet, TCP operates at a higher level, concerned only with the two end systems, for example a Web browser and a Web server. In particular, TCP provides reliable, ordered delivery of a stream of bytes from one program on one computer to another program on another computer. Besides the Web, other common applications of TCP include e-mail and file transfer. Among its management tasks, TCP controls message size, the rate at which messages are exchanged, and network traffic congestion.

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.