USCIS/ALIEN REGISTRATION # ARE THEY THE SAME?

[Ilovemybaby28 0]

I am filling up the I-485 application and I was stuck by the question in Part 3B

it says there "list your present spouse"

my husband just got his certificate of Naturalization last november 2010 and he has the

USCIS REGISTRATION NO. that starts with A0--------- and it is the same as the Alien Registration number.

I searched it in google and it appeared in uscis.gov

Q. What is the USCIS number listed on the front of the card?

A. The USCIS number is the same as the alien registration number, commonly known as “A” number, but without the “A” prefix. The USCIS number or alien registration number is also listed on the back of the redesigned Green Card (i.e., A# 000-000-000).

The “A” number for an individual will not change, but it may be referred to as a “USCIS number,” “alien registration number” or “alien number” interchangeably.

so am I right?

please help and thank you