1C:59:74:6 Square Inc.
Every MAC address from 1C:59:74:60:00:00 to 1C:59:74:6F:FF:FF belongs to a block the IEEE assigned to Square Inc.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 1C:59:74:6 belongs to
Written 1C:59:74:6, 1C-59-74-6 or 1C59746, depending on the system. Look up a full address.
Prefix
1C:59:74:6/28
Organization
Square Inc.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
1C:59:74:60:00:00
Last address
1C:59:74:6F:FF:FF
Address type
Globally unique, unicast
Registered address
1455 Market St. San Francisco CA US 94103
Parent block
Inside 1C:59:74
This MA-M block is carved from the 24-bit block 1C:59:74, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.
Same organization
Other blocks assigned to Square Inc.
3 more blocks registered under the same name.