Interpret a UUID

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UUID: 
Your input:                      21cf649e-95a9-4785-b5ef-6714432e8e72

Various notations:

URN:                             urn:uuid:21cf649e-95a9-4785-b5ef-6714432e8e72
URI:                             uuid:21cf649e-95a9-4785-b5ef-6714432e8e72
Microsoft GUID syntax:           {21CF649E-95A9-4785-B5EF-6714432E8E72}
C++ struct syntax:               { 0x21cf649e, 0x95a9, 0x4785, { 0xb5, 0xef, 0x67, 0x14, 0x43, 0x2e, 0x8e, 0x72 } }

As OID (ISO/ITU-T 128 bits):     2.25.44941370115946888227181523730193878642
As OID (Microsoft):              1.2.840.113556.1.8000.2554.8655.25758.38313.18309.46575.6755395.3051122
As OID (Waterjuice 2x64 bits):   1.3.6.1.4.1.54392.1.2436276555709237125.13109810377022934642
As OID (Waterjuice 4x32 bits):   1.3.6.1.4.1.54392.2.567239838.2510899077.3052365588.1127124594
As OID (Waterjuice 8x16 bits):   1.3.6.1.4.1.54392.3.8655.25758.38313.18309.46575.26388.17198.36466

Interpretation of the UUID:

Variant:                         [0b10_] RFC 4122 (Leach-Mealling-Salz)
Version:                         [0x4] Random
Random bits:                     00100001 11001111 01100100 10011110 10010101 10101001 ????0111 10000101
                                 ??110101 11101111 01100111 00010100 01000011 00101110 10001110 01110010
Random bytes:                    [0x21cf649e95a9?785?5ef6714432e8e72]