Code to Check your Mobile Number on MTN, Airtel, Glo, and 9mobile

Knowing the exact code to check your mobile number shouldn’t feel like a stressful thing when someone asks for your number.

We’ve all been there, someone ask for your number and you confidently reach for your phone. You even scroll through your contacts to see if “My Number” is saved… but it’s not there. Or maybe you’re signing up for something and it says “enter your phone number” and suddenly you’re guessing.

The good thing is, you don’t need airtime or the internet to find your number. Just a quick code and it shows up right on your screen.

What is a USSD code and why does it work so easily?

Before we jump into the code, let’s quickly break it down.

A USSD (Unstructured Supplementary Service Data) code is just those short numbers you dial using * and # — like *123#.

When you dial it, it doesn’t need internet or data. It connects straight to your mobile network and pulls up the information instantly. That’s why it still works even when your airtime is zero or your data is off.

And here’s the interesting part, it doesn’t care what phone you’re using.

iPhone, Android, or even that small Itel phone that refuses to give up, if it can dial, it can run a USSD code.

That’s it. Simple, fast, and always reliable.

Now let’s get into the codes.

Code to Check Your Mobile Number on MTN

MTN is Nigeria’s biggest network, and checking your number on it is actually very easy.

Fastest method, just dial this: *663# on the phone with your registered MTN sim card.

Wait a few seconds, and your MTN number will pop up on your screen. No menus, no stress, just your number showing straight away.

Another way:

Dial *123# on the phone with your registered MTN sim card.

Select My Account

Then My Tools

Tap My Number

Your number will be displayed immediately.

This second option is useful if you also want to check things like your data balance, buy airtime, or explore other services while you’re there.

But if all you want is your number quickly, *663# is the easiest.

Quick tip: *663# is short and easy to remember, so you might want to save it in your mind.

Code to Check Your Mobile Number on Airtel

If you’re using Airtel, you’ve also got a couple of easy ways to check your number.

Fastest method: Just dial *282# on the phone with your registered Airtel SIM card

In a few seconds, your Airtel number will pop up on your screen. No extra steps, no menus, just straight to the point.

Another way:

Dial *121# on the phone with your registered Airtel SIM card

Choose Manage my Account

Then select My Number

Your number will be displayed immediately.

The *121# menu is actually quite useful because it’s not just for checking your number. 

You can also check your balance, manage subscriptions, and handle other account settings in one place.

But if you just want your number quickly, *282# is the simplest option.

Code to Check Your Mobile Number on Glo

Glo also keeps things pretty simple when it comes to checking your number.

Fastest method: Just dial *135*8# on the phone with your registered Glo SIM card

That’s it. Your Glo number will appear on the screen right away.

Another way:

Dial *777#

Go to My Tariff Plan

Select My Number

Your number will be shown

The *777# menu is basically Glo’s main control hub. You can buy data, check your balance, activate services, and also check your number, all in one place.

Code to Check Your Mobile Number on 9Mobile

9Mobile users aren’t left out either, checking your number is just as easy.

Fastest method: Just dial *248#

Your 9Mobile number will show up on your screen almost instantly. 

Another way:

Dial *200# on the phone with your registered 9mobile sim card 

Select Account Information

Tap My Number

Your number will be displayed on the screen

The *200# menu is also quite useful because it’s more than just for checking your number. 

You can buy data, check your balance, and manage other account services in one place.

All the Codes in One Table

When USSD Codes Don’t Work: 4 Easy Backup Options

Sometimes USSD codes just refuse to cooperate. Maybe the network is acting up, the SIM hasn’t fully registered, or it’s just one of those random telecom moments we all experience.

If that happens and you still can’t check your mobile number, don’t worry, try any of these instead:

1. Call or Text Another Phone

This is the simplest fix.

Just call or send a text to any phone you trust, a friend, family member, or even your second line. Once it goes through, your number will show on their screen.

Ask them to read it back or send you a screenshot.

Works on all networks, all phones. Every time.

2. Check Your Phone Settings

Your phone might already have your SIM details saved.

On Android:

Go to Settings

Tap About Phone

Look for SIM info or Phone number

On iPhone:

Open Settings

Tap Phone

Check under My Number

Sometimes it shows up blank depending on your SIM, but it’s still worth checking.

3. Check the SIM Pack

If your SIM is new, don’t forget the small card pack it came in.

Most times, your number is printed on it alongside the SIM serial number.

It’s easy to misplace, but check drawers, bags, or anywhere you dump small important things, it might still be there.

4. Visit a Customer Care Centre

If nothing works, just visit your network’s customer care centre with a valid ID (National ID, driver’s licence, or passport).

They can quickly verify your details and give you your number on the spot.

You can also use the opportunity to fix any other SIM issues while you’re there.

Most of the time, these methods will work without any issues, but just in case something feels off — if you dial the code and the number that shows up isn’t actually yours, don’t ignore it or assume it’s just a network issue. In some cases, that can be a sign of SIM swap fraud. We’ve already explained the warning signs and what to do next in a separate guide — read it here.

Common Questions About Checking Your Mobile Number

1. Is it really free to check your mobile number?

Yes, it is. All the USSD codes used to check your number don’t take airtime or data. Even if your balance is zero, it will still work.

2. Do these codes work on feature phones?

Yes, they do. You don’t need a smartphone or internet connection. As long as your phone can make calls, it can run USSD codes, even basic button phones.

3. Is it safe to use USSD codes?

Yes, it’s safe. These codes are officially provided by your network (MTN, Airtel, Glo, and 9Mobile). They don’t expose your personal information, they just display basic account details like your number.

4. What if my SIM isn’t properly registered?

That one can affect things. If your SIM isn’t fully registered or linked correctly (like NIN-SIM issues), some services may not work. If the code refuses to show your number, the best option is to visit a customer care centre to sort it out.

5. What if I have two SIM cards in my phone?

No problem. USSD codes only work on the SIM you use to dial them. So if you have more than one SIM, just make sure you select the right one before sending the code. Most Android phones will ask you which SIM to use.

Bottom Line

It’s easy to lose track of your own number, especially with a new SIM or a line you don’t use often.

But the good thing is, you can always get it back in seconds with a simple USSD code.

To quickly recap:

MTN → *663#

Airtel → *282#

Glo → *135*8#

9Mobile → *248#

Free, fast, and works on any phone. Save this page, share it with someone who always forgets their number and you already know who that is.