Sichuan Tianyi Comheart Telecom Co.,LTD

MA-L

MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.

Prefix5C:4A:1F:00:00:00 /24

Vendor addressFL12, TowerB,Tianyi international Hotel,No.2 West Section One, Second Ring Road, Chengdu Sichuan CN 610000

Country🇨🇳 China

RegisteredSep 13, 2016

Block range5C:4A:1F:00:00:00– 5C:4A:1F: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

Sep 13, 2016 – Feb 24, 2021 SICHUAN TIANYI COMHEART TELECOMCO., LTD name changed
Feb 24, 2021 – Feb 25, 2021 SICHUAN TIANYI COMHEART TELECOMCO.,LTD name changed
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

5C:4A:1F:00:00:00 5C:4A:1F:7F:FF:FF 5C:4A:1F:FF:FF:FF

Where this block sits

Next 5C:4A:26:00:00:00 /24 Enguity Technology Corp

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