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