Alright, so you wanna know about this “A-number” thingy for the F1 visa, huh? Don’t you worry none, I’ll tell ya all about it, the way I understand it, ya know, plain and simple.
First off, what is this “A-number” anyway? Well, it’s like your special number, the government gives it to ya so they can keep track of who you are. Like a cow got a tag on its ear, you got this number. They call it fancy names, like “Alien Registration Number” or somethin’, but it’s just a number, see?

Now, where do you find this number? It ain’t hidin’ under a rock, that’s for sure. They say you can find it on all sorts of papers. Important papers, mind you, not just any old grocery list.
- They say it’s on your immigrant data summary. Sounds official, right? Probably got a bunch of other numbers on it too, so don’t get confused.
- Then there’s this USCIS Immigrant Fee handout. If you paid some money, they probably gave you a paper, and the number might be on there.
- And the visa stamp itself! They say it’s called “Registration Number” on there, but it’s the same thing, that A-number. Look for a letter “A” followed by a bunch of numbers, like A123456789 or somethin’ like that. Sometimes it ain’t got that many numbers, but they stick some zeros in front, so it’s always nine digits in the end, they say.
Oh, and if you got one of them work permits, they call it an “Employment Authorization Document” or “EAD” to sound fancy, the number might be on there too. Just look around, it ain’t gonna bite ya.
Now, some folks get all mixed up with another number, this “USCIS case number.” That ain’t the same thing! That one’s got letters and numbers all mixed up, like ABC1234567890. Don’t go lookin’ at that one thinkin’ it’s your A-number, you hear?
So, you find your A-number, then what? Well, I reckon you need it for somethin’, or you wouldn’t be askin’. Maybe you gotta fill out some more papers, or maybe they just wanna make sure you’re the same person you say you are. Government’s always checkin’ on ya, like a hawk watchin’ a field mouse.
Now, if you still can’t find that number, don’t you go frettin’. You probably got some other papers from them government folks, or maybe you can ask somebody who knows about these things. Just don’t lose them papers, they’re important!

And remember, this A-number, it’s just a way for them to keep track of ya. It’s important, so keep it safe and know where it is. Just like you keep your important papers in a safe place, you keep that number in your head, or write it down somewhere you won’t forget.
They make it all sound so complicated, with all their fancy words and rules. But it ain’t that hard, really. It’s just a number, and you just gotta know where to find it. And if you’re still confused, well, just keep askin’ until you understand. That’s what I always say.
So, that’s the long and short of it. Hope I explained it good enough for ya. It ain’t rocket science, just a number to keep track of folks. Now, go find that number and get on with your business.
Tags: A Number, F1 Visa, USCIS, Alien Registration Number, Visa Stamp, EAD, Work Permit, Immigration