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MAC prefix 48:31:B7

Assigned by the IEEE to Espressif Inc..

Prefix
48:31:B7   48-31-B7   4831.B7
Block type
MA-L (16,777,216 addresses)
Address range
48:31:B7:00:00:00 – 48:31:B7:FF:FF:FF
Organization
Espressif Inc.
Registered address
Room 204, Building 2, 690 Bibo Rd, Pudong New Area, Shanghai Shanghai 201203, CN
Country
China (CN)
Address bits
Unicast (I/G bit 0), globally unique (U/L bit 0)

Look up 48:31:B7:00:00:00

Espressif Inc. holds 170 blocks in total: see all. Source: IEEE Registration Authority public listing.