What this means
The IEEE assigned the MA-L block A49005 to CHINA GREATWALL COMPUTER SHENZHEN 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 A4:90:05, it is CHINA GREATWALL COMPUTER SHENZHEN CO.,LTD hardware.
Frequently Asked Questions
Who owns MAC prefix A49005?
A49005 is registered to CHINA GREATWALL COMPUTER SHENZHEN 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. CHINA GREATWALL COMPUTER SHENZHEN CO.,LTD's block covers 16,777,216 addresses.
What devices use A49005?
Any network device with a MAC address starting A4:90:05 was manufactured by or for CHINA GREATWALL COMPUTER SHENZHEN CO.,LTD.