Port Number Reference

TCP, UDP, and SCTP all use port numbers to identify the logical communications between hosts. The combination of a port and IP address identifies a TCP/UDP/SCTP Endpoint, and the endpoint pairs on either end of a "connection" make up a TCP/UDP/SCTP Conversation.

As the underlying IP protocol can "only" transfer data between two IP hosts, it's often desired to transfer TCP/UDP data from more than one application between two IP hosts.

The concept of a TCP/UDP port is to provide several logical channels between the same IP hosts. When sending a packet, TCP/UDP multiplexes the data from separate applications over one IP "host to host transfer". While receiving, TCP/UDP demultiplexes the IP packets again, providing the received data to the applications interested in.

The addressing of this multiplexing/demultiplexing is done using the ports.


Port numbers are unsigned 16-bit integers, ranging from 0 to 65535. The IANA list of assigned port numbers has divided ports into three ranges (RFC 6335):

  • 0 through 1023: Well Known Ports
  • 1024 through 49151: Registered Ports
  • 49152 through 65535: Dynamic or Private Ports
 o  the System Ports, also known as the Well Known Ports, from 0-1023
    (assigned by IANA)

 o  the User Ports, also known as the Registered Ports, from 1024-
    49151 (assigned by IANA)

 o  the Dynamic Ports, also known as the Private or Ephemeral Ports,
    from 49152-65535 (never assigned)

Ports 1024 and above are also referred to as ephemeral ports.

Ports are officially registered with the IANA. Unofficial lists are maintained by many people, including the following:

A local list is maintained below:

0 - 99 100 - 199 200 - 299 300 - 399 400 - 499
500 - 599 600 - 699 700 - 799 800 - 899 900 - 999
1000 - 1099 1100 - 1199 1200 - 1299 1300 - 1399 1400 - 1499
1500 - 1599 1600 - 1699 1700 - 1799 1800 - 1899 1900 - 1999
2000 - 2099 2100 - 2199 2200 - 2299 2300 - 2399 2400 - 2499
2500 - 2599 2600 - 2699 2700 - 2799 2800 - 2899 2900 - 2999
3000 - 3099 3100 - 3199 3200 - 3299 3300 - 3399 3400 - 3499
3500 - 3599 3600 - 3699 3700 - 3799 3800 - 3899 3900 - 3999
4000 - 4099 4100 - 4199 4200 - 4299 4300 - 4399 4400 - 4499
4500 - 4599 4600 - 4699 4700 - 4799 4800 - 4899 4900 - 4999
5000 - 5099 5100 - 5199 5200 - 5299 5300 - 5399 5400 - 5499
5500 - 5599 5600 - 5699 5700 - 5799 5800 - 5899 5900 - 5999
6000 - 6099 6100 - 6199 6200 - 6299 6300 - 6399 6400 - 6499
6500 - 6599 6600 - 6699 6700 - 6799 6800 - 6899 6900 - 6999
7000 - 7099 7100 - 7199 7200 - 7299 7300 - 7399 7400 - 7499
7500 - 7599 7600 - 7699 7700 - 7799 7800 - 7899 7900 - 7999
8000 - 8099 8100 - 8199 8200 - 8299 8300 - 8399 8400 - 8499
8500 - 8599 8600 - 8699 8700 - 8799 8800 - 8899 8900 - 8999
9000 - 9099 9100 - 9199 9200 - 9299 9300 - 9399 9400 - 9499
9500 - 9599 9600 - 9699 9700 - 9799 9800 - 9899 9900 - 9999
10000 - 10099 10100 - 10199 10200 - 10299 10300 - 10399 10400 - 10499
10500 - 10599 10600 - 10699 10700 - 10799 10800 - 10899 10900 - 10999
11000 - 11099 11100 - 11199 11200 - 11299 11300 - 11399 11400 - 11499
11500 - 11599 11600 - 11699 11700 - 11799 11800 - 11899 11900 - 11999
12000 - 12099 12100 - 12199 12200 - 12299 12300 - 12399 12400 - 12499
12500 - 12599 12600 - 12699 12700 - 12799 12800 - 12899 12900 - 12999
13000 - 13099 13100 - 13199 13200 - 13299 13300 - 13399 13400 - 13499
13500 - 13599 13600 - 13699 13700 - 13799 13800 - 13899 13900 - 13999
14000 - 14099 14100 - 14199 14200 - 14299 14300 - 14399 14400 - 14499
14500 - 14599 14600 - 14699 14700 - 14799 14800 - 14899 14900 - 14999
15000 - 15099 15100 - 15199 15200 - 15299 15300 - 15399 15400 - 15499
15500 - 15599 15600 - 15699 15700 - 15799 15800 - 15899 15900 - 15999
16000 - 16099 16100 - 16199 16200 - 16299 16300 - 16399 16400 - 16499
16500 - 16599 16600 - 16699 16700 - 16799 16800 - 16899 16900 - 16999
17000 - 17099 17100 - 17199 17200 - 17299 17300 - 17399 17400 - 17499
17500 - 17599 17600 - 17699 17700 - 17799 17800 - 17899 17900 - 17999
18000 - 18099 18100 - 18199 18200 - 18299 18300 - 18399 18400 - 18499
18500 - 18599 18600 - 18699 18700 - 18799 18800 - 18899 18900 - 18999
19000 - 19099 19100 - 19199 19200 - 19299 19300 - 19399 19400 - 19499
19500 - 19599 19600 - 19699 19700 - 19799 19800 - 19899 19900 - 19999
20000 - 20099 20100 - 20199 20200 - 20299 20300 - 20399 20400 - 20499
20500 - 20599 20600 - 20699 20700 - 20799 20800 - 20899 20900 - 20999
21000 - 21099 21100 - 21199 21200 - 21299 21300 - 21399 21400 - 21499
21500 - 21599 21600 - 21699 21700 - 21799 21800 - 21899 21900 - 21999
22000 - 22099 22100 - 22199 22200 - 22299 22300 - 22399 22400 - 22499
22500 - 22599 22600 - 22699 22700 - 22799 22800 - 22899 22900 - 22999
23000 - 23099 23100 - 23199 23200 - 23299 23300 - 23399 23400 - 23499
23500 - 23599 23600 - 23699 23700 - 23799 23800 - 23899 23900 - 23999
24000 - 24099 24100 - 24199 24200 - 24299 24300 - 24399 24400 - 24499
24500 - 24599 24600 - 24699 24700 - 24799 24800 - 24899 24900 - 24999
25000 - 25099 25100 - 25199 25200 - 25299 25300 - 25399 25400 - 25499
25500 - 25599 25600 - 25699 25700 - 25799 25800 - 25899 25900 - 25999
26000 - 26099 26100 - 26199 26200 - 26299 26300 - 26399 26400 - 26499
26500 - 26599 26600 - 26699 26700 - 26799 26800 - 26899 26900 - 26999
27000 - 27099 27100 - 27199 27200 - 27299 27300 - 27399 27400 - 27499
27500 - 27599 27600 - 27699 27700 - 27799 27800 - 27899 27900 - 27999
28000 - 28099 28100 - 28199 28200 - 28299 28300 - 28399 28400 - 28499
28500 - 28599 28600 - 28699 28700 - 28799 28800 - 28899 28900 - 28999
29000 - 29099 29100 - 29199 29200 - 29299 29300 - 29399 29400 - 29499
29500 - 29599 29600 - 29699 29700 - 29799 29800 - 29899 29900 - 29999
30000 - 30099 30100 - 30199 30200 - 30299 30300 - 30399 30400 - 30499
30500 - 30599 30600 - 30699 30700 - 30799 30800 - 30899 30900 - 30999
31000 - 31099 31100 - 31199 31200 - 31299 31300 - 31399 31400 - 31499
31500 - 31599 31600 - 31699 31700 - 31799 31800 - 31899 31900 - 31999
32000 - 32099 32100 - 32199 32200 - 32299 32300 - 32399 32400 - 32499
32500 - 32599 32600 - 32699 32700 - 32799 32800 - 32899 32900 - 32999
33000 - 33099 33100 - 33199 33200 - 33299 33300 - 33399 33400 - 33499
33500 - 33599 33600 - 33699 33700 - 33799 33800 - 33899 33900 - 33999
34000 - 34099 34100 - 34199 34200 - 34299 34300 - 34399 34400 - 34499
34500 - 34599 34600 - 34699 34700 - 34799 34800 - 34899 34900 - 34999
35000 - 35099 35100 - 35199 35200 - 35299 35300 - 35399 35400 - 35499
35500 - 35599 35600 - 35699 35700 - 35799 35800 - 35899 35900 - 35999
36000 - 36099 36100 - 36199 36200 - 36299 36300 - 36399 36400 - 36499
36500 - 36599 36600 - 36699 36700 - 36799 36800 - 36899 36900 - 36999
37000 - 37099 37100 - 37199 37200 - 37299 37300 - 37399 37400 - 37499
37500 - 37599 37600 - 37699 37700 - 37799 37800 - 37899 37900 - 37999
38000 - 38099 38100 - 38199 38200 - 38299 38300 - 38399 38400 - 38499
38500 - 38599 38600 - 38699 38700 - 38799 38800 - 38899 38900 - 38999
39000 - 39099 39100 - 39199 39200 - 39299 39300 - 39399 39400 - 39499
39500 - 39599 39600 - 39699 39700 - 39799 39800 - 39899 39900 - 39999
40000 - 40099 40100 - 40199 40200 - 40299 40300 - 40399 40400 - 40499
40500 - 40599 40600 - 40699 40700 - 40799 40800 - 40899 40900 - 40999
41000 - 41099 41100 - 41199 41200 - 41299 41300 - 41399 41400 - 41499
41500 - 41599 41600 - 41699 41700 - 41799 41800 - 41899 41900 - 41999
42000 - 42099 42100 - 42199 42200 - 42299 42300 - 42399 42400 - 42499
42500 - 42599 42600 - 42699 42700 - 42799 42800 - 42899 42900 - 42999
43000 - 43099 43100 - 43199 43200 - 43299 43300 - 43399 43400 - 43499
43500 - 43599 43600 - 43699 43700 - 43799 43800 - 43899 43900 - 43999
44000 - 44099 44100 - 44199 44200 - 44299 44300 - 44399 44400 - 44499
44500 - 44599 44600 - 44699 44700 - 44799 44800 - 44899 44900 - 44999
45000 - 45099 45100 - 45199 45200 - 45299 45300 - 45399 45400 - 45499
45500 - 45599 45600 - 45699 45700 - 45799 45800 - 45899 45900 - 45999
46000 - 46099 46100 - 46199 46200 - 46299 46300 - 46399 46400 - 46499
46500 - 46599 46600 - 46699 46700 - 46799 46800 - 46899 46900 - 46999
47000 - 47099 47100 - 47199 47200 - 47299 47300 - 47399 47400 - 47499
47500 - 47599 47600 - 47699 47700 - 47799 47800 - 47899 47900 - 47999
48000 - 48099 48100 - 48199 48200 - 48299 48300 - 48399 48400 - 48499
48500 - 48599 48600 - 48699 48700 - 48799 48800 - 48899 48900 - 48999
49000 - 49099 49100 - 49199 49200 - 49299 49300 - 49399 49400 - 49499
49500 - 49599 49600 - 49699 49700 - 49799 49800 - 49899 49900 - 49999
50000 - 50099 50100 - 50199 50200 - 50299 50300 - 50399 50400 - 50499
50500 - 50599 50600 - 50699 50700 - 50799 50800 - 50899 50900 - 50999
51000 - 51099 51100 - 51199 51200 - 51299 51300 - 51399 51400 - 51499
51500 - 51599 51600 - 51699 51700 - 51799 51800 - 51899 51900 - 51999
52000 - 52099 52100 - 52199 52200 - 52299 52300 - 52399 52400 - 52499
52500 - 52599 52600 - 52699 52700 - 52799 52800 - 52899 52900 - 52999
53000 - 53099 53100 - 53199 53200 - 53299 53300 - 53399 53400 - 53499
53500 - 53599 53600 - 53699 53700 - 53799 53800 - 53899 53900 - 53999
54000 - 54099 54100 - 54199 54200 - 54299 54300 - 54399 54400 - 54499
54500 - 54599 54600 - 54699 54700 - 54799 54800 - 54899 54900 - 54999
55000 - 55099 55100 - 55199 55200 - 55299 55300 - 55399 55400 - 55499
55500 - 55599 55600 - 55699 55700 - 55799 55800 - 55899 55900 - 55999
56000 - 56099 56100 - 56199 56200 - 56299 56300 - 56399 56400 - 56499
56500 - 56599 56600 - 56699 56700 - 56799 56800 - 56899 56900 - 56999
57000 - 57099 57100 - 57199 57200 - 57299 57300 - 57399 57400 - 57499
57500 - 57599 57600 - 57699 57700 - 57799 57800 - 57899 57900 - 57999
58000 - 58099 58100 - 58199 58200 - 58299 58300 - 58399 58400 - 58499
58500 - 58599 58600 - 58699 58700 - 58799 58800 - 58899 58900 - 58999
59000 - 59099 59100 - 59199 59200 - 59299 59300 - 59399 59400 - 59499
59500 - 59599 59600 - 59699 59700 - 59799 59800 - 59899 59900 - 59999
60000 - 60099 60100 - 60199 60200 - 60299 60300 - 60399 60400 - 60499
60500 - 60599 60600 - 60699 60700 - 60799 60800 - 60899 60900 - 60999
61000 - 61099 61100 - 61199 61200 - 61299 61300 - 61399 61400 - 61499
61500 - 61599 61600 - 61699 61700 - 61799 61800 - 61899 61900 - 61999
62000 - 62099 62100 - 62199 62200 - 62299 62300 - 62399 62400 - 62499
62500 - 62599 62600 - 62699 62700 - 62799 62800 - 62899 62900 - 62999
63000 - 63099 63100 - 63199 63200 - 63299 63300 - 63399 63400 - 63499
63500 - 63599 63600 - 63699 63700 - 63799 63800 - 63899 63900 - 63999
64000 - 64099 64100 - 64199 64200 - 64299 64300 - 64399 64400 - 64499
64500 - 64599 64600 - 64699 64700 - 64799 64800 - 64899 64900 - 64999
65000 - 65099 65100 - 65199 65200 - 65299 65300 - 65399 65400 - 65499
65500 - 65599        

Discussion


Imported from https://wiki.wireshark.org/PortReference on 2020-08-11 23:18:00 UTC