- For economic immigration applications, including Express Entry it begins with E (such as E01234567).
- For Provincial Nominee Program (PNP) applications it begins with EP (such as EP01234567).
- For family sponsorship applications it begins with F (such as F01234567).
- For study permit applications it begins with S (such as S01234567).
- For work permit applications it begins with W (such as W01234567).
- For temporary resident visa (TRV), visitor record or Electronic Travel Authorization (eTa) applications it begins with V (such as V01234567).
- For temporary resident permit applications, it begins with D (such as D01234567) f
- For citizenship applications it begins with C (such as C01234567).
- For Humanitarian and Compassionate considerations applications it begins with H
(such as H01234567).
- For refugee claimant applications it begins with L (such as L01234567).
- For refugee resettlement applications it begins with G (such as G01234567).
- For rehabilitation applications it begins with RHB (such as RHB01234567).
- For removal orders it begins with N (such as N01234567).