What this means
The IEEE assigned the MA-L block 001F55 to Honeywell Security (China) Co., Ltd.. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 00:1F:55, it is Honeywell Security (China) Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 001F55?
001F55 is registered to Honeywell Security (China) Co., Ltd. in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Honeywell Security (China) Co., Ltd.'s block covers 16,777,216 addresses.
What devices use 001F55?
Any network device with a MAC address starting 00:1F:55 was manufactured by or for Honeywell Security (China) Co., Ltd..