Is your debit card (ATM card) stolen, misplaced, or lost? Learn how to quickly block any bank’s ATM card in Nigeria to protect your bank account and its contents. How to Block ATM Card of Any Bank in Nigeria If Lost or Stolen.
I have addressed the following topics in this post: how to block GTBank ATM card, how to block First Bank ATM card, how to block Access/Diamond Bank ATM card, how to block UBA ATM card, how to block Zenith bank ATM card, how to block Fidelity bank ATM card, how to block Stanbic IBTC bank ATM card, how to block Sterling Bank ATM card, how to block Keystone Bank ATM card, how to block Wema Bank ATM card, how to block Eco Bank ATM card,
How to Block ATM Card of Any Bank in Nigeria

With this information, you don’t need to visit the bank hall to block your ATM card. You can easily do it yourself before fraudsters withdraw all the money from your bank account.
HOW TO BLOCK ALL BANK ATM CARD IN NIGERIA
Follow the steps below carefully to block the debit card of any Nigerian bank if stolen to avoid unauthorized tampering on your account.
HOW TO BLOCK YOUR GTB ATM CARD OFFLINE VIA USSD CODE
To block your GTB ATM Card, dial *737*51*10# on your mobile device with a phone number associated with your GTBank account.
HOW TO BLOCK YOUR GTB ATM CARD ONLINE VIA GTBANK APP OR INTERNET BANKING
If you have internet banking access or you have a working GTBank mobile app, follow these steps:
- Just log in to your GTBank internet banking platform or app.
- Look for the card and click on it.
- Select ‘Hotlist’ and enter your card number.
- Then give a reason to block the card.
- Click submits.
- Next, a screen will pop up asking you to confirm the deactivation of your ATM card.
- Just accept and it will be blocked instantly so no transaction can be carried out on it.
To get a new card, walk into any GTB branch and request for a new debit card which can be Mastercard, Visa, or Verve, depending on your choice.
HOW TO BLOCK FIRST BANK ATM CARD WITH USSD CODE
To block your First Bank ATM Card With USSD Code, Send “BLOCK” to 30012.
Your ATM card will be blocked within 24 hours so no person can withdraw or make any sort of transaction on it.
If you want to use another card, just walk into the nearest First Bank branch and apply for a new debit card.
HOW TO BLOCK ZENITH BANK ATM CARD
There are two methods to block your Zenith Bank ATM card – via USSD protection and via internet banking/mobile app.
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HOW TO BLOCK ZENITH BANK CARD USING USSD PROTECT CODE:
- Dial *966*911# from any Mobile device
- Input your account number followed by your Mobile number
- Press 1 to confirm your request to block your card instantly.
TO BLOCK YOUR ZENITH BANK ATM CARD VIA APP/INTERNET
- Log in to the Zenith Bank app
- Click the menu bar and select Cards and Cheques.
- Select Deactivate Card
- State the reason for deactivating the card.
- Now click on continue.
- The ATM card will be locked and no transaction will be done with it from that moment.
For more assistance, contact Zenith Bank customer care via phone call using the following numbers 012787000, 014647000, and 012927000.
HOW TO BLOCK UBA ATM CARD
The fastest way to block your lost or stolen UBA ATM/Debit Card is to dial *919*10# from the phone number associated with your UBA Bank account.
Another alternative method using USSD code is this;
- Dial *919# from the mobile number linked to your UBA account
- Select “7” for next
- Select Banking services
- Select “1” to block debit card
- Enter your account number and click on send, and it will be blocked.
HOW TO BLOCK YOUR UBA ATM CARD THROUGH INTERNET BANKING/APP PLATFORM
- Log in to the UBA internet banking platform
- Select self-service
- Request to block your card
For more assistance, contact UBA customer care (help desk) with this number +2347002255822 or send an email to cfc@ubagroup.com.
HOW TO BLOCK STERLING BANK ATM CARD
For now, there is no USSD code to instantly block Sterling bank ATM card but you can still block your card by contacting them via email at customercare@sterlingbankng.com or calling them at 070078375464.
Also, you can contact them via their social media handles below.
Facebook: www.facebook.com/SterlingBankNigeria/
Twitter: www.twitter.com/sterling_bankng
Instagram: www.instagram.com/sterlingbank
HOW TO BLOCK ACCESS BANK ATM CARD IF LOST
Access bank has a unique way of assisting with lost debit cards. No USSD code is required to be dialed and no SMS is required to be sent. Rather do this:
- For loss of your debit card dial 18005548969
- For loss of your credit card dial 18005583424
Your card will be deactivated once this is done.
HOW TO BLOCK FIDELITY BANK ATM CARD
To block the Fidelity bank ATM card via USSD code, dial *770*911# from the phone number connected to the account and follow the prompts.
All the ATM cards linked to the account will be listed so you have to select the card(s) to block.
Alternatively, you can contact Fidelity Bank to block your ATM card via email at trueserve@fidelitybank.ng, true.serve@fidelitybank.ng.
HOW TO BLOCK WEMA BANK ATM CARD
There are two methods available to block your Wema Bank ATM card if it’s lost or stolen. One method is via Mobile app/internet banking while the other method is via SMS.
To block, lock or deactivate your lost WEMA Bank ATM card, send CARD ATM OFF to 33352 using the phone number linked to your Wema Bank account.
HOW TO BLOCK STANBIC IBTC BANK ATM CARD
Two methods are available to block your ATM card – via USSD code and via SMS. We have explained them below.
- Dial this code *909#
- Select my bank
- Select service request
- Click on the block card.
To block a card via SMS, send Block card NUBAN to 30909 via your registered mobile number.
NOTE: replaced the NUBAN with the 10 digits of your account number Link to the card.
HOW TO BLOCK UNION BANK ATM CARD
You can block your Union Bank card by texting BLOCK CARD NUBAN via SMS to 20123 using the phone number associated to your account.
Remember you should replace the “NUBAN” with the 10-digit of your account number.
HOW TO BLOCK ECOBANK ATM CARD
To block EcoBank ATM Card, Send “STOP ATM NUBAN NUMBER” to 08063262265. Just replace “NUBAN” with your account number.
For example, send “STOP ATM 1020415263” to 08063262265.
HOW TO BLOCK FCMB ATM CARD
To block your FCMB ATM card, just call them at +234 2798800 or Email them at customerservice@fcmb.com requesting that your ATM Card account should be blocked after the provision of relevant information.
For now, FCMB doesn’t support dialing any USSD code to lock accounts or deactivate accounts.
HOW TO BLOCK UNITY BANK ATM CARD
Call any of these phone numbers +2347080666000, +2347057323226, +2347057323227, and give them a reason to block your card.
OR you can email them at we_care@unitybankng.com or visit their official website www.unitybankng.com.
HOW TO BLOCK KEYSTONE BANK ATM CARD
Keystone bank does not require sending codes or the use of an internet app to block Cards.
To block your Keystone Bank Card just send an email to contactcentre@keystonebankng.com or call them on +234 700 2000 3000 stating the reason you want your card to be deactivated.
WHAT IF YOU LOST YOUR ATM CARD TOGETHER WITH THE SIM ASSOCIATED WITH YOUR BANK?
If you lost the ATM card and phone or SIM which is linked to your bank account, the only way to deactivate or block your ATM card is to immediately rush to the nearest branch of your bank and request to block your card.
Also, report to your network provider’s office to block your SIM to avoid fraudulent activities with your SIM.