IPv4 Subnet Calculator
Address
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Ports of industrial protocols
| Modbus TCP | 502 | TCP |
| Modbus TCP Security | 802 | TCP |
| ISO-TSAP (Siemens S7 communication) | 102 | TCP |
| EtherNet/IP explicit messaging | 44818 | TCP/UDP |
| EtherNet/IP I/O | 2222 | UDP |
| OPC UA binary | 4840 | TCP |
| OPC UA over TLS | 4843 | TCP |
| PROFINET RT unicast / multicast / context manager | 34962 / 34963 / 34964 | UDP |
| IEC 60870-5-104 | 2404 | TCP |
| IEC 60870-5-104 secure | 19998 | TCP |
| DNP3 | 20000 | TCP/UDP |
| BACnet/IP | 47808 | UDP |
| HART-IP | 5094 | TCP/UDP |
| FOUNDATION Fieldbus HSE | 1089–1091 | TCP/UDP |
| MQTT / MQTT over TLS | 1883 / 8883 | TCP |
| SNMP / traps | 161 / 162 | UDP |
IANA Service Name and Transport Protocol Port Number Registry.