MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix70:B3:D5:E9:80:00 /36
Vendor addressTsyolkovsky 4 Kaluga Kaluga RU 248000
Country🇷🇺 Russia
RegisteredNov 6, 2016
Block range70:B3:D5:E9:80:00– 70:B3:D5:E9:8F:FF
Address capacity4,096
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
Where this block sits
Previous
70:B3:D5:E9:70:00 /36
Toptech Systems, Inc.
Next
70:B3:D5:E9:90:00 /36
Advitronics telecom bv
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
JSC Kaluga Astral holds 2 registered blocks in the IEEE registry, ranking #2,333 of 33,427 organizations by block count.
Other blocks registered to JSC Kaluga Astral