macadress

Sichuan Tianyi Comheart Telecom Co.,LTD

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix9C:61:21:00:00:00 /24
Vendor addressFL12,TowerB,Tianyi international Hotel,No.2 West Section One, Second Ring Road, Chengdu Sichuan CN 610000
Country🇨🇳  China
RegisteredApr 12, 2016
Block range9C:61:21:00:00:00– 9C:61:21:FF:FF:FF
Address capacity16,777,216
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 →

Ownership timeline

  1. Apr 12, 2016 – Feb 25, 2021 SICHUAN TIANYI COMHEART TELECOMCO.,LTD name changed
  2. Feb 25, 2021 – present Sichuan Tianyi Comheart Telecom Co.,LTD

Dates show when a change became public in the IEEE registry. How we track ownership history →

Example addresses in this block

9C:61:21:00:00:00 9C:61:21:7F:FF:FF 9C:61:21:FF:FF:FF

Where this block sits

Previous 9C:61:1D:00:00:00 /24 Panasonic Corporation of North America

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

Sichuan Tianyi Comheart Telecom Co.,LTD holds 91 registered blocks in the IEEE registry, ranking #38 of 33,498 organizations by block count.

Other blocks registered to Sichuan Tianyi Comheart Telecom Co.,LTD

00:4C:E5:00:00:00 /24 MA-L 00:E5:E4:00:00:00 /24 MA-L 04:43:FD:00:00:00 /24 MA-L 04:6B:25:00:00:00 /24 MA-L 08:01:0F:00:00:00 /24 MA-L 10:12:B4:00:00:00 /24 MA-L 14:69:A2:00:00:00 /24 MA-L 18:52:07:00:00:00 /24 MA-L 18:75:32:00:00:00 /24 MA-L 1C:0E:D3:00:00:00 /24 MA-L 1C:FF:59:00:00:00 /24 MA-L 24:06:F2:00:00:00 /24 MA-L