What this means
The IEEE assigned the MA-L block 00250D to GZT Telkom-Telmor sp. z o.o.. 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 00:25:0D, it is GZT Telkom-Telmor sp. z o.o. hardware.
Frequently Asked Questions
Who owns MAC prefix 00250D?
00250D is registered to GZT Telkom-Telmor sp. z o.o. 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. GZT Telkom-Telmor sp. z o.o.'s block covers 16,777,216 addresses.
What devices use 00250D?
Any network device with a MAC address starting 00:25:0D was manufactured by or for GZT Telkom-Telmor sp. z o.o..