I-130 - Question about citizenship #

Greencattle

Registered Users (C)
I'm preparing for filing 1-130. On the citizenship certificate, there are 2 numbers. On the top of the right side, No. 30XXXXXX. And under it comes CIS REgistration NO. A04XXXXXXX. Which one is the right certificate number that I should fill in I-130?
 
... and if you're talking about the citizenship certificate number, then it's the first number.
 
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