What this means
The IEEE assigned the MA-L block 1881ED to TERACOM TELEMATICA S.A. 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 18:81:ED, it is TERACOM TELEMATICA S.A hardware.
Frequently Asked Questions
Who owns MAC prefix 1881ED?
1881ED is registered to TERACOM TELEMATICA S.A 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. TERACOM TELEMATICA S.A's block covers 16,777,216 addresses.
What devices use 1881ED?
Any network device with a MAC address starting 18:81:ED was manufactured by or for TERACOM TELEMATICA S.A.