Interpret a UUID

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UUID: 
Your input:                      fd21547b-1689-4997-916a-7943746dfdd5

Various notations:

URN:                             urn:uuid:fd21547b-1689-4997-916a-7943746dfdd5
URI:                             uuid:fd21547b-1689-4997-916a-7943746dfdd5
Microsoft GUID syntax:           {FD21547B-1689-4997-916A-7943746DFDD5}
C++ struct syntax:               { 0xfd21547b, 0x1689, 0x4997, { 0x91, 0x6a, 0x79, 0x43, 0x74, 0x6d, 0xfd, 0xd5 } }

As OID (ISO/ITU-T 128 bits):     2.25.336467742204360701733280549341582196181
As OID (Microsoft):              1.2.840.113556.1.8000.2554.64801.21627.5769.18839.37226.7947124.7208405
As OID (Waterjuice 2x64 bits):   1.3.6.1.4.1.54392.1.18239952853463026071.10478320813654015445
As OID (Waterjuice 4x32 bits):   1.3.6.1.4.1.54392.2.4246819963.378096023.2439674179.1953365461
As OID (Waterjuice 8x16 bits):   1.3.6.1.4.1.54392.3.64801.21627.5769.18839.37226.31043.29805.64981

Interpretation of the UUID:

Variant:                         [0b10_] RFC 4122 (Leach-Mealling-Salz)
Version:                         [0x4] Random
Random bits:                     11111101 00100001 01010100 01111011 00010110 10001001 ????1001 10010111
                                 ??010001 01101010 01111001 01000011 01110100 01101101 11111101 11010101
Random bytes:                    [0xfd21547b1689?997?16a7943746dfdd5]