What this means
The IEEE assigned the MA-L block DCED84 to Haverford Systems Inc. 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 DC:ED:84, it is Haverford Systems Inc hardware.
Frequently Asked Questions
Who owns MAC prefix DCED84?
DCED84 is registered to Haverford Systems Inc 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. Haverford Systems Inc's block covers 16,777,216 addresses.
What devices use DCED84?
Any network device with a MAC address starting DC:ED:84 was manufactured by or for Haverford Systems Inc.