UUID Generator

What is An UUID?

It's a 128 bit long value that is used to uniquely identify an entity in computer systems. A lot of different factors like timestamp, randomness, and other platform variables will be used to generate an UUID so that it will be universally unique.Read More

What are different types/versions of UUID?

Version 1 & 2: These are composed of timestamp, random value and system's MAC address. Since MAC address is being used which will uniquely identify the device, these two versions are not widely being used over privacy concerns.

Version 3 & 5: These are generated by hasing a namespace identifier(UUID) and name. Version 3 uses MD5 hasing and Version 5 uses SHA-1 hashing.

Version 4: These UUIDs are generated randomly and more chances to be unique and won't contain any information like timestamp, MAC address which identify a device.

Nil/Empty UUID

00000000-0000-0000-0000-000000000000