Interpret a UUID

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Your input:                      efdfb10e-ad01-8716-87e9-5ce32bd83b97

Various notations:

URN:                             urn:uuid:efdfb10e-ad01-8716-87e9-5ce32bd83b97
URI:                             uuid:efdfb10e-ad01-8716-87e9-5ce32bd83b97
Microsoft GUID syntax:           {EFDFB10E-AD01-8716-87E9-5CE32BD83B97}
C++ struct syntax:               { 0xefdfb10e, 0xad01, 0x8716, { 0x87, 0xe9, 0x5c, 0xe3, 0x2b, 0xd8, 0x3b, 0x97 } }

As OID (ISO/ITU-T 128 bits):     2.25.318846964341285035290547282599243955095
As OID (Microsoft):              1.2.840.113556.1.8000.2554.61407.45326.44289.34582.34793.6087467.14171031
As OID (Waterjuice 2x64 bits):   1.3.6.1.4.1.54392.1.17284728571461469974.9793460995456777111
As OID (Waterjuice 4x32 bits):   1.3.6.1.4.1.54392.2.4024414478.2902558486.2280217827.735591319
As OID (Waterjuice 8x16 bits):   1.3.6.1.4.1.54392.3.61407.45326.44289.34582.34793.23779.11224.15255

Interpretation of the UUID:

Variant:                         [0b10_] RFC 9562 (Davis-Peabody-Leach)
Version:                         [0x8] Custom implementation
Custom data:                     [0xefdfb10ead0171607e95ce32bd83b97]
Custom data block1 (32 bit):     [0xefdfb10e]
Custom data block2 (16 bit):     [0xad01]
Custom data block3 (12 bit):     [0x716]
Custom data block4 (14 bit):     [0x07e9]
Custom data block5 (48 bit):     [0x5ce32bd83b97]

Interpretation of HickelSOFT "SQL Server Sortable Custom UUID", Version 3

Random 16 bits:                  [0xefdf] 0b1110111111011111
Milliseconds:                    [0xb1] 693 (deviation -2ms..2ms)
Seconds:                         [0x0e] 14
Minute of day:                   [0x01ad] 429 (07:08)
Day of year:                     [0x167] 359 (Day=25, Month=12)
Unused 2 bits:                   [0] 0b00
Year:                            [0x7e9] 2025
Signature:                       [0x5ce32bd83b97] HickelSOFT "SQL Server Sortable Custom UUID", Version 3 (very likely)
UTC Date Time:                   2025-12-25 07:08:14'693 (deviation -2ms..2ms)