SHANGHAI CHARMHOPE INFORMATION TECHNOLOGY CO.,LTD.

MA-M

MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.

PrefixC0:83:59:A0:00:00 /28

Vendor addressBuilding 11,No.230,Chuanhong Rd,Pudong Distrist Shanghai Shanghai CN 201202

RegisteredMay 6, 2018

Block rangeC0:83:59:A0:00:00– C0:83:59:AF:FF:FF

Address capacity1,048,576

AdministrationUniversally administered: its prefix comes from a block registered through the IEEE Registration Authority

TransmissionUnicast: addressed to a single device

SourceIEEE Registration Authority

Address capacity is the size of this registered block, not a count of devices actually manufactured or online. Registration identifies the organization holding the block, not a specific device model or unit.

Curious how a prefix like this turns into a full address? See how MAC addresses are structured →

Example addresses in this block

C0:83:59:A0:00:00 C0:83:59:A7:FF:FF C0:83:59:AF:FF:FF

Where this block sits

Previous C0:83:59:90:00:00 /28 Shenzhen Pay Device Technology Co., Ltd. Next C0:83:59:B0:00:00 /28 Suzhou Siheng Science and Technology Ltd.

The nearest registered blocks of the same size on either side of this one in IEEE's address space.

SHANGHAI CHARMHOPE INFORMATION TECHNOLOGY CO.,LTD. holds 1 registered blocks in the IEEE registry, ranking #25,897 of 33,427 organizations by block count.