MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
SEMAPHORE COMMUNICATIONS CORP.
OUI prefix: 00:C0:5A
Vendor name: SEMAPHORE COMMUNICATIONS CORP.
217 HUMBOLDT COURT
SUNNYVALE CA 94089-1300
Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)
Last updated: 17 November 2015
Initial registration: 09 November 2000