Honeywell Environmental & Combustion Controls MAC Addresses
This page provides information about MAC addresses and OUIs assigned to Honeywell Environmental & Combustion Controls. The Organizationally Unique Identifier (OUI) is the first 24 bits of a MAC address and is assigned by the IEEE to uniquely identify a vendor or manufacturer.
About Honeywell Environmental & Combustion Controls MAC Addresses
MAC addresses beginning with 00:20:3D: are manufactured by Honeywell Environmental & Combustion Controls. When you see a device on your network with this OUI prefix, it indicates that the device was manufactured by Honeywell Environmental & Combustion Controls.
The IEEE assigns OUI prefixes to manufacturers to ensure uniqueness in the global networking ecosystem. Honeywell Environmental & Combustion Controls has been assigned the OUI prefix 00203D (among others) for use in their network devices.
Common Honeywell Environmental & Combustion Controls Devices
Devices manufactured by Honeywell Environmental & Combustion Controls that you might encounter on networks include:
- Network interface cards (NICs)
- Routers and switches
- Wireless access points
- IoT devices
- Embedded systems
- And other networking equipment
Identifying Honeywell Environmental & Combustion Controls Devices on Your Network
To identify Honeywell Environmental & Combustion Controls devices on your network:
- Use network scanning tools to list devices on your network
- Look for MAC addresses starting with any of the OUI prefixes listed in the sidebar
- Use our MAC address lookup tool to confirm the manufacturer
This can be particularly helpful for network inventory, troubleshooting, and security auditing.
MAC Address Format
A complete MAC address consists of 48 bits (6 bytes) and is typically represented in hexadecimal format with each byte separated by a colon or a hyphen. For Honeywell Environmental & Combustion Controls devices, the MAC address would look like:
00:20:3D:XX:XX:XX
The first three bytes (00:20:3D) identify the manufacturer as Honeywell Environmental & Combustion Controls, while the last three bytes are unique to each device.