Top 1000 Well Known Ports
https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers
Port | TCP | UDP | IANA status | Description | SCTP |
---|---|---|---|---|---|
0 | Reserved | Reserved | Official | | |
N/A | N/A | Unofficial | In programming APIs (not in communication between hosts), requests a system-allocated (dynamic) port | | |
1 | Yes | Assigned | Official | TCP Port Service Multiplexer (TCPMUX). Historic. Both TCP and UDP have been assigned to TCPMUX by IANA, but by design only TCP is specified. | |
5 | Assigned | Assigned | Official | Remote Job Entry was historically using socket 5 in its old socket form, while MIB PIM has identified it as TCP/5 and IANA has assigned both TCP and UDP 5 to it. | |
7 | Yes | Yes | Official | | |
9 | Yes | Yes | Official | Yes | |
No | Yes | Unofficial | | | |
11 | Yes | Yes | Official | | |
13 | Yes | Yes | Official | | |
15 | Yes | No | Unofficial | | |
17 | Yes | Yes | Official | | |
18 | Yes | Yes | Official | | |
19 | Yes | Yes | Official | | |
20 | Yes | Assigned | Official | Yes | |
21 | Yes | Assigned | Official | Yes | |
22 | Yes | Assigned | Official | Yes | |
23 | Yes | Assigned | Official | | |
25 | Yes | Assigned | Official | | |
37 | Yes | Yes | Official | | |
42 | Assigned | Yes | Official | | |
43 | Yes | Assigned | Official | | |
47 | Reserved | Reserved | Official | | |
49 | Yes | Yes | Official | | |
51 | Reserved | Reserved | Official | Historically used for Interface Message Processor logical address management, entry has been removed by IANA on 2013-05-25 | |
52 | Assigned | Assigned | Official | Xerox Network Systems (XNS) Time Protocol. Despite this port being assigned by IANA, the service is meant to work on SPP (ancestor of IPX/SPX), instead of TCP/IP. | |
53 | Yes | Yes | Official | | |
54 | Assigned | Assigned | Official | | |
56 | Assigned | Assigned | Official | | |
58 | Assigned | Assigned | Official | | |
61 | Reserved | Reserved | Official | Historically assigned to the NIFTP-Based Mail protocol, but was never documented in the related IEN. The port number entry was removed from IANA's registry on 2017-05-18. | |
67 | Assigned | Yes | Official | | |
68 | Assigned | Yes | Official | Bootstrap Protocol (BOOTP) client; also used by Dynamic Host Configuration Protocol (DHCP) | |
69 | Assigned | Yes | Official | | |
70 | Yes | Assigned | Official | | |
71–74 | Yes | Yes | Official | | |
79 | Yes | Assigned | Official | | |
80 | Yes | Assigned | Official | Yes | |
No | Yes | Unofficial | QUIC, a transport protocol over UDP (still in draft as of April 2020), using stream multiplexing, encryption by default with TLS, and currently supporting HTTP/2. QUIC has been renamed to HTTP/3, which is currently an Internet Draft. | | |
82 | | Yes | Unofficial | | |
83 | Yes | Assigned | Official | MIT ML Device, networking file system | |
88 | Yes | Assigned | Official | | |
90 | Yes | Yes | Unofficial | | |
95 | Yes | Assigned | Official | SUPDUP, terminal-independent remote login | |
101 | Yes | Assigned | Official | | |
102 | Yes | Assigned | Official | | |
104 | Yes | Yes | Official | | |
105 | Yes | Yes | Official | | |
107 | Yes | Yes | Official | | |
108 | Yes | Yes | Official | | |
109 | Yes | Assigned | Official | | |
110 | Yes | Assigned | Official | Post Office Protocol, version 3 (POP3) | |
111 | Yes | Yes | Official | | |
113 | Yes | No | Official | | |
Yes | Assigned | Official | Authentication Service (auth), the predecessor to identification protocol. Used to determine a user's identity of a particular TCP connection. | | |
115 | Yes | Assigned | Official | | |
117 | Yes | Yes | Official | | |
118 | Yes | Yes | Official | | |
119 | Yes | Assigned | Official | | |
123 | Assigned | Yes | Official | | |
126 | Yes | Yes | Official | Formerly Unisys Unitary Login, renamed by Unisys to NXEdit. Used by Unisys Programmer's Workbench for Clearpath MCP, an IDE for Unisys MCP software development | |
135 | Yes | Yes | Official | | |
Yes | Yes | Official | | | |
137 | Yes | Yes | Official | | |
138 | Assigned | Yes | Official | NetBIOS Datagram Service | |
139 | Yes | Assigned | Official | NetBIOS Session Service | |
143 | Yes | Assigned | Official | | |
152 | Yes | Yes | Official | | |
153 | Yes | Yes | Official | Simple Gateway Monitoring Protocol (SGMP), a protocol for remote inspection and alteration of gateway management information | |
156 | Yes | Yes | Official | | |
158 | Yes | Yes | Official | | |
161 | Assigned | Yes | Official | | |
162 | Yes | Yes | Official | | |
170 | Yes | Yes | Official | | |
177 | Yes | Yes | Official | | |
179 | Yes | Assigned | Official | Border Gateway Protocol (BGP),[77] used to exchange routing and reachability information among autonomous systems (AS) on the Internet | Yes |
194 | Yes | Yes | Official | | |
199 | Yes | Yes | Official | | |
201 | Yes | Yes | Official | | |
209 | Yes | Assigned | Official | | |
210 | Yes | Yes | Official | | |
213 | Yes | Yes | Official | | |
218 | Yes | Yes | Official | Message posting protocol (MPP) | |
220 | Yes | Yes | Official | | |
225–241 | Reserved | Reserved | Official | | |
249–255 | Reserved | Reserved | Official | | |
259 | Yes | Yes | Official | Efficient Short Remote Operations (ESRO) | |
262 | Yes | Yes | Official | Arcisdms | |
264 | Yes | Yes | Official | | |
280 | Yes | Yes | Official | http-mgmt | |
300 | Yes | | Unofficial | | |
308 | Yes | | Official | Novastor Online Backup | |
311 | Yes | Assigned | Official | | |
318 | Yes | Yes | Official | | |
319 | | Yes | Official | | |
320 | | Yes | Official | | |
350 | Yes | Yes | Official | | |
351 | Yes | Yes | Official | MATIP type B | |
356 | Yes | Yes | Official | cloanto-net-1 (used by Cloanto Amiga Explorer and VMs) | |
366 | Yes | Yes | Official | On-Demand Mail Relay (ODMR) | |
369 | Yes | Yes | Official | Rpc2portmap | |
370 | Yes | Yes | Official | codaauth2, Coda authentication server | |
| Yes | Official | | | |
371 | Yes | Yes | Official | ClearCase albd | |
383 | Yes | Yes | Official | HP data alarm manager | |
384 | Yes | Yes | Official | A Remote Network Server System | |
387 | Yes | Yes | Official | | |
388 | Yes | Assigned | Official | | |
389 | Yes | Assigned | Official | | |
399 | Yes | Yes | Official | | |
401 | Yes | Yes | Official | | |
427 | Yes | Yes | Official | | |
433 | Yes |