Interpret a UUID

Back

UUID: 
Your input:                      d4ef9d1e-6d01-8415-87e9-5ce32bd83b97

Various notations:

URN:                             urn:uuid:d4ef9d1e-6d01-8415-87e9-5ce32bd83b97
URI:                             uuid:d4ef9d1e-6d01-8415-87e9-5ce32bd83b97
Microsoft GUID syntax:           {D4EF9D1E-6D01-8415-87E9-5CE32BD83B97}
C++ struct syntax:               { 0xd4ef9d1e, 0x6d01, 0x8415, { 0x87, 0xe9, 0x5c, 0xe3, 0x2b, 0xd8, 0x3b, 0x97 } }

As OID (ISO/ITU-T 128 bits):     2.25.283040480804480336344909625383588477847
As OID (Microsoft):              1.2.840.113556.1.8000.2554.54511.40222.27905.33813.34793.6087467.14171031
As OID (Waterjuice 2x64 bits):   1.3.6.1.4.1.54392.1.15343655209477964821.9793460995456777111
As OID (Waterjuice 4x32 bits):   1.3.6.1.4.1.54392.2.3572473118.1828815893.2280217827.735591319
As OID (Waterjuice 8x16 bits):   1.3.6.1.4.1.54392.3.54511.40222.27905.33813.34793.23779.11224.15255

Interpretation of the UUID:

Variant:                         [0b10_] RFC 9562 (Davis-Peabody-Leach)
Version:                         [0x8] Custom implementation
Custom data:                     [0xd4ef9d1e6d0141507e95ce32bd83b97]
Custom data block1 (32 bit):     [0xd4ef9d1e]
Custom data block2 (16 bit):     [0x6d01]
Custom data block3 (12 bit):     [0x415]
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:                  [0xd4ef] 0b1101010011101111
Milliseconds:                    [0x9d] 615 (deviation -2ms..2ms)
Seconds:                         [0x1e] 30
Minute of day:                   [0x016d] 365 (06:04)
Day of year:                     [0x154] 340 (Day=6, 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:                   2025-12-06 06:04:30'615 (deviation -2ms..2ms)