OUI Lookup
0021e1
Nortel Networks
Manufacturer Information
- OUI Prefix
- 0021e1
- Manufacturer
- Nortel Networks
- Address
- 2221 Lakeside Blvd Richardson TX US 75081
- Last updated
- 6/11/2026
Vendor Statistics
- Total prefixes
- 68
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 0021E1
The OUI prefix 0021E1 is assigned to Nortel Networks, based in 2221 Lakeside Blvd Richardson TX US 75081 . It is a MA-L type block of 24 bits (first three octets). Allows up to 16 million unique MAC addresses. If you find this prefix on your network, the devices belong to Nortel Networks.
Other prefixes from Nortel Networks
001f46Nortel Networks00034bNortel Networks000e40Nortel Networks001c9cNortel Networks001b25Nortel Networks0019e1Nortel Networks00140dNortel Networks001d42Nortel Networks68784cNortel Networks80177dNortel Networks0024b5Nortel Networks00247fNortel Networks001fdaNortel Networks00230dNortel Networks000181Nortel Networks0004dcNortel Networks000cf7Nortel Networks000fcdNortel Networks001bbaNortel Networks001969Nortel Networks0018b0Nortel Networks0016caNortel Networks00140eNortel Networks001e1fNortel Networks