MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix70:B3:D5:E2:D0:00 /36
Vendor address170 Waterside House Guildford Surrey GB GU2 7RQ
Country🇬🇧 United Kingdom
RegisteredFeb 1, 2019
Block range70:B3:D5:E2:D0:00– 70:B3:D5:E2:DF: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 →
Ownership timeline
- Feb 1, 2019 – Jun 15, 2022 Private name changedaddress changedcountry changed
- Jun 15, 2022 – Oct 22, 2025 BAE Systems Apllied Intelligence name changed
- Oct 22, 2025 – present BAE Systems
Example addresses in this block
Where this block sits
Previous
70:B3:D5:E2:C0:00 /36
Fourth Frontier Technologies Private Limited
Next
70:B3:D5:E2:E0:00 /36
Merz s.r.o.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
BAE Systems holds 10 registered blocks in the IEEE registry, ranking #299 of 33,421 organizations by block count.
Other blocks registered to BAE Systems