I-485,I-130,I765 Receipt number can not found

[jszjzjj]

i received I-485, I-130 receipt notice on March 7th, but why i can not find my number on USCIS internet? (by using case status tracking)

[txh1b]

Normal. SOme cases just don't show up.

[lovenecia]

Your case number has to start with three letters "ABC" and then 10 digits number.
Check your NOA1, it should be there under receipt number.
As soon as you find you your case number go to uscis.gov and there search for case status in the searching field