Interpret a UUID
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Your input: c4f2942d-4404-8907-87ea-5ce32bd83b97
Various notations:
URN: urn:uuid:c4f2942d-4404-8907-87ea-5ce32bd83b97
URI: uuid:c4f2942d-4404-8907-87ea-5ce32bd83b97
Microsoft GUID syntax: {C4F2942D-4404-8907-87EA-5CE32BD83B97}
C++ struct syntax: { 0xc4f2942d, 0x4404, 0x8907, { 0x87, 0xea, 0x5c, 0xe3, 0x2b, 0xd8, 0x3b, 0x97 } }
As OID (ISO/ITU-T 128 bits): 2.25.261788228396548056438627527147065457559
As OID (Microsoft): 1.2.840.113556.1.8000.2554.50418.37933.17412.35079.34794.6087467.14171031
As OID (Waterjuice 2x64 bits): 1.3.6.1.4.1.54392.1.14191568297933441287.9793742470433487767
As OID (Waterjuice 4x32 bits): 1.3.6.1.4.1.54392.2.3304231981.1141147911.2280283363.735591319
As OID (Waterjuice 8x16 bits): 1.3.6.1.4.1.54392.3.50418.37933.17412.35079.34794.23779.11224.15255
Interpretation of the UUID:
Variant: [0b10_] RFC 9562 (Davis-Peabody-Leach)
Version: [0x8] Custom implementation
Custom data: [0xc4f2942d440490707ea5ce32bd83b97]
Custom data block1 (32 bit): [0xc4f2942d]
Custom data block2 (16 bit): [0x4404]
Custom data block3 (12 bit): [0x907]
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: [0xc4f2] 0b1100010011110010
Milliseconds: [0x94] 580 (deviation -2ms..2ms)
Seconds: [0x2d] 45
Minute of day: [0x0444] 1092 (18:11)
Day of year: [0x079] 121 (Day=1, Month=5)
Unused 2 bits: [0] 0b00
Year: [0x7ea] 2026
Signature: [0x5ce32bd83b97] HickelSOFT "SQL Server Sortable Custom UUID", Version 3 (very likely)
UTC Date Time: 2026-05-01 18:11:45'580 (deviation -2ms..2ms)