Interpret a UUID

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UUID: 
Your input:                      28ef872e-5301-8404-87ea-5ce32bd83b97

Various notations:

URN:                             urn:uuid:28ef872e-5301-8404-87ea-5ce32bd83b97
URI:                             uuid:28ef872e-5301-8404-87ea-5ce32bd83b97
Microsoft GUID syntax:           {28EF872E-5301-8404-87EA-5CE32BD83B97}
C++ struct syntax:               { 0x28ef872e, 0x5301, 0x8404, { 0x87, 0xea, 0x5c, 0xe3, 0x2b, 0xd8, 0x3b, 0x97 } }

As OID (ISO/ITU-T 128 bits):     2.25.54412820576067515527985546107614149527
As OID (Microsoft):              1.2.840.113556.1.8000.2554.10479.34606.21249.33796.34794.6087467.14171031
As OID (Waterjuice 2x64 bits):   1.3.6.1.4.1.54392.1.2949724913981817860.9793742470433487767
As OID (Waterjuice 4x32 bits):   1.3.6.1.4.1.54392.2.686786350.1392608260.2280283363.735591319
As OID (Waterjuice 8x16 bits):   1.3.6.1.4.1.54392.3.10479.34606.21249.33796.34794.23779.11224.15255

Interpretation of the UUID:

Variant:                         [0b10_] RFC 9562 (Davis-Peabody-Leach)
Version:                         [0x8] Custom implementation
Custom data:                     [0x28ef872e530140407ea5ce32bd83b97]
Custom data block1 (32 bit):     [0x28ef872e]
Custom data block2 (16 bit):     [0x5301]
Custom data block3 (12 bit):     [0x404]
Custom data block4 (14 bit):     [0x07ea]
Custom data block5 (48 bit):     [0x5ce32bd83b97]

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

Random 16 bits:                  [0x28ef] 0b0010100011101111
Milliseconds:                    [0x87] 529 (deviation -2ms..2ms)
Seconds:                         [0x2e] 46
Minute of day:                   [0x0153] 339 (05:38)
Day of year:                     [0x044] 68 (Day=9, Month=3)
Unused 2 bits:                   [0] 0b00
Year:                            [0x7ea] 2026
Signature:                       [0x5ce32bd83b97] HickelSOFT "SQL Server Sortable Custom UUID", Version 3 (very likely)
UTC Date Time:                   2026-03-09 05:38:46'529 (deviation -2ms..2ms)