18:EF:C0 Sercomm Japan Corporation
Every MAC address from 18:EF:C0:00:00:00 to 18:EF:C0:FF:FF:FF belongs to a block the IEEE assigned to Sercomm Japan Corporation. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 18:EF:C0 belongs to
Written 18:EF:C0, 18-EF-C0 or 18EFC0, depending on the system. Look up a full address.
Prefix
18:EF:C0
Organization
Sercomm Japan Corporation
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
18:EF:C0:00:00:00
Last address
18:EF:C0:FF:FF:FF
Address type
Globally unique, unicast
Registered address
8F, 3-1, YuanQu St., NanKang, Taipei 115, Taiwan Taipei TW 115
Same organization
Other blocks assigned to Sercomm Japan Corporation
3 more blocks registered under the same name.