Your passport file number is the reference the Passport Office assigns to your application file, and it is printed at the top right of the Acknowledgement Letter you are handed when you leave the Passport Seva Kendra. It is the only reference the official status tracker accepts: Passport Seva asks for your File Number and your date of birth, and nothing else (Passport Seva, Track Application Status, accessed 2026-08-27).
This guide is maintained by Zurich Kotak General Insurance, an IRDAI-registered general insurer in India and part of the Zurich Insurance Group.
How Zurich Kotak fits in: A file number belongs to Passport Seva and no insurer has any part in it, but Zurich Kotak covers what happens once the passport arrives. Zurich Kotak’s Smart Travel policy is taken per trip, priced on destination, dates and travellers, and issued online with the policy document available to download straight away. It covers emergency medical treatment abroad, medical evacuation, baggage loss or delay and loss of passport overseas, up to the limits of the plan you buy.
Last verified: 2026-08-27.
If you have not been to your appointment yet, you do not have one
Applying online does not give you a file number. It gives you an Application Reference Number, and the status tracker will not accept it.
This is the single most common reason people conclude the tracker is broken. The sequence is:
1. You fill the form on Passport Seva and submit it. The portal issues an Application Reference Number (ARN), which identifies your submission and your appointment.
2. You attend your appointment at the Passport Seva Kendra or Post Office Passport Seva Kendra.
3. On the way out you are handed an Acknowledgement Letter, and the File Number is printed on it.
Until step three has happened, there is genuinely nothing to track. Your application has not yet reached the Passport Office as a file, so no file number exists to look up. Almost no page that ranks for this question says so, which is why so many applicants spend the days before their appointment convinced something has gone wrong.
Once you have the file number, how to check your passport application status sets out every method that accepts it.
File number, ARN and passport number: three different things
They are issued by different parties at different moments, and only one of them tracks an application.
| File Number | Application Reference Number (ARN) | Passport Number |
Issued by | The Passport Office, on your application file | The Passport Seva portal, at online submission | Printed on the passport itself, on issue |
You receive it | At the Passport Seva Kendra, on the Acknowledgement Letter | Immediately on submitting the form online | When the passport arrives |
Accepted by the status tracker | Yes, with your date of birth | No | No, for an application in progress |
Used for | Status checks, the call centre, grievances, appeals, and the previous-passport section of a later re-issue form | Identifying your submission and your appointment | Identifying the passport, not the application |
The portal itself blurs the first two: several screens label a single field “ARN/File Number”. That label is accurate over the life of an application, because early on you hold only an ARN and later you hold both, but it does cause people to type the wrong one into the tracker.
What a file number looks like
The status tracker validates the file number as three alphabetical characters followed by eleven numerals, which is fourteen characters in all.
There is a wrinkle worth knowing, because it will save you from re-typing a number that was right the first time. The Ministry’s own step-by-step guide to checking application status describes the file number as a 15-character alphanumeric reference, and the worked examples it prints, such as one beginning “BN” and another beginning “BNG”, have prefixes of different lengths. The two government sources do not quite agree with each other.
The practical advice that follows from that is simple: copy the number exactly as it appears on your Acknowledgement Letter. Do not add spaces, do not drop leading letters, and do not correct it to a length you read about somewhere. The leading letters correspond to the Passport Office that holds your file, although no current government page states this in so many words.
The ARN looks quite different. The portal’s own form validation describes it as two digits for the year, a hyphen, and then a seven or ten digit sequence. If the reference in your hand has a hyphen in it, it is an ARN, and the tracker will refuse it.
Where your file number appears
On the Acknowledgement Letter first, and then on almost everything the Passport Office sends you.
· The Acknowledgement Letter, issued at the exit counter of the Passport Seva Kendra after your documents are accepted. Top right corner.
· The status tracker, which returns your file number back to you alongside your name, application type, the date your application was received and its current status.
· Any grievance you register. The portal requires you to quote the passport file number or passport number, along with your name and date of birth.
· Any appeal, if a Passport Office refuses, impounds or revokes a passport. The appeal form asks for the file number.
· The previous-passport section of a later application. When you eventually apply for a re-issue, the form asks for the previous passport’s number, place and date of issue, date of expiry and file number.
That last one is the reason to keep the Acknowledgement Letter rather than throw it away when the passport arrives. You will be asked for the number again in five or ten years.
What you can actually do with it
Four things, and the first is free and takes under a minute.
1. Check your status online. Go to passportindia.gov.in/psp , open Track Application Status under Passport Services, enter the file number and your date of birth. There is no login and no captcha on that screen.
2. Ring the National Call Centre on 1800-258-1800, which runs around the clock. You can speak to an executive or enter the file number into the automated menu. The executive will ask for the file number and your date of birth.
3. Register a grievance, quoting the file number, which generates a Service Request Number you can then track.
4. File an appeal, if there has been an adverse decision on your application.
Common mistakes
Almost every one of these ends the same way: a valid reference that will not match, or a wait for something that does not exist yet.
Mistake | What happens | What to do instead |
Typing the ARN into the status tracker | The tracker rejects it and you assume the site is down | Wait for the Acknowledgement Letter, then use the file number |
Expecting to track before the PSK visit | Nothing to find, because no file exists yet | Track from the appointment day onwards |
Reformatting the number to a length you read online | A valid number stops matching | Copy it character for character from the letter |
Discarding the Acknowledgement Letter once the passport arrives | The number is asked for again at your next re-issue | Photograph it and keep the paper |
Using the passport number to track an application in progress | It identifies the booklet, not the file | Use the file number |
Searching for a passport file number by name | No government service does this | The tracker needs the file number and date of birth, together |
Where this sits in your application
The file number arrives at the appointment and stays useful for a decade.
· Before it: the appointment itself, and how slots are released, in passport appointment booking .
· After it: how to check your passport application status , method by method.
· Alongside it: what the passport status messages mean , once the tracker returns a line of wording you do not recognise.
· At the end of it: how to download your passport online , once the passport has been issued.
Frequently asked questions
What is a passport file number in India? It is the reference the Passport Office assigns to your application file. It is printed at the top right of the Acknowledgement Letter handed to you at the exit counter of the Passport Seva Kendra, and it is the reference the official status tracker asks for, along with your date of birth.
How do I find my passport file number? Look at the Acknowledgement Letter you were given when you left the Passport Seva Kendra or Post Office Passport Seva Kendra after your appointment. The file number is printed in the top right corner. If you have applied online but not yet attended your appointment, you do not have one yet.
Is the file number the same as the application reference number? No. The Application Reference Number is generated when you submit the form online, before your appointment. The file number is assigned by the Passport Office and appears on the Acknowledgement Letter afterwards. The status tracker accepts the file number and not the ARN, although some screens label a single field ARN slash File Number.
What is the format of a passport file number? The status tracker validates it as three alphabetical characters followed by eleven numerals. The Ministry’s own status-check guide describes it as a 15-character alphanumeric reference and prints examples with prefixes of different lengths, so copy the number exactly as printed on your Acknowledgement Letter rather than counting characters.
Can I check my passport status without a file number? Not on the official tracker, which requires the file number and date of birth. You can ring the National Call Centre on 1800-258-1800, but the executive will also ask for the file number. If you have lost the Acknowledgement Letter, ask at the enquiry counter of the Passport Office where you applied.
Does the file number change if I apply again later? Yes. It identifies one application file, not you, so a later re-issue application gets its own file number. You will be asked for the old one in the previous-passport section of the new form, which is why the Acknowledgement Letter is worth keeping.
