The Well-Known UIDs are Static Instance UID mostly used in normalised operations. The following is a list of all UIDs in DICOM

• Instance StorageCommitmentPush 1.2.840.10008.1.20.1.1
• Instance StorageCommitmentPull 1.2.840.10008.1.20.2.1
• Instance Printer 1.2.840.10008.5.1.1.17
• Instance PrinterConfigurationRetrieval 1.2.840.10008.5.1.1.17.376
• Instance PrintQueue 1.2.840.10008.5.1.1.25

Of these, only Instance StorageCommitmentPush and Instance Printer are commonly used.