Interpret a UUID
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Your input: 90efbd00-d8c3-11f1-a660-4cf95d479851
Various notations:
URN: urn:uuid:90efbd00-d8c3-11f1-a660-4cf95d479851
URI: uuid:90efbd00-d8c3-11f1-a660-4cf95d479851
Microsoft GUID syntax: {90EFBD00-D8C3-11F1-A660-4CF95D479851}
C++ struct syntax: { 0x90efbd00, 0xd8c3, 0x11f1, { 0xa6, 0x60, 0x4c, 0xf9, 0x5d, 0x47, 0x98, 0x51 } }
As OID (ISO/ITU-T 128 bits): 2.25.192653623784717387061196716257093064785
As OID (Microsoft): 1.2.840.113556.1.8000.2554.37103.48384.55491.4593.42592.5044573.4692049
As OID (Waterjuice 2x64 bits): 1.3.6.1.4.1.54392.1.10443773872229782001.11988666841955801169
As OID (Waterjuice 4x32 bits): 1.3.6.1.4.1.54392.2.2431630592.3636662769.2791329017.1564973137
As OID (Waterjuice 8x16 bits): 1.3.6.1.4.1.54392.3.37103.48384.55491.4593.42592.19705.23879.38993
Interpretation of the UUID:
Variant: [0b10_] RFC 4122 (Leach-Mealling-Salz) / DCE 1.1
Version: [0x1] Time-based with unique host identifier
Timestamp: [0x1f1d8c390efbd00] 2026-11-05 02:49:48'7048960 GMT
Clock ID: [0xa660] 9824
Node ID: [0x4cf95d479851] 4C-F9-5D-47-98-51
In case that this Node ID is a MAC address, here is the interpretation of that MAC address:
Input: 4C-F9-5D-47-98-51
Type: EUI-48 (Extended Unique Identifier)
EUI-48 or MAC-48: 4C-F9-5D-47-98-51
EUI-64: 4C-F9-5D-FF-FF-47-98-51 (MAC-48 to EUI-64 Encapsulation)
4C-F9-5D-FF-FE-47-98-51 (EUI-48 to EUI-64 Encapsulation)
4E-F9-5D-FF-FE-47-98-51 (MAC/EUI-48 to Modified EUI-64 Encapsulation)
IPv6-Link-Local address: fe80::4ef9:5dff:fe47:9851
Administration type (U/L flag): [0] Universally Administered Address (UAA)
Transmission type (I/G flag): [0] Unicast (Individual)
IEEE OUI (MA-L): 0x4CF95D
Vendor-specific part: 0x479851
Registrant: HUAWEI TECHNOLOGIES CO.,LTD
Address of registrant: No.2 Xin Cheng Road, Room R6,Songshan Lake Technology Park
Dongguan 523808
CN
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