Modern toll road systems focus on speed and comfort, eliminating the need to stop at a barrier to pay in cash. The main tool for traveling along such highways is transponder - a compact device that is mounted on the windshield and automatically deducts travel expenses. However, many owners are faced with a situation where they need to check their balance, top up their account, or understand the reasons for blocking the device, but they do not know where to find the account ID.
A personal account number (PA) is a unique digital code that links your device to a specific entry in the payment system operator’s database. Without this number, it is impossible to log in to your personal account on a website or mobile application, and it is also impossible to make a payment through terminals or banking applications if they require manual data entry. Finding this information can be critical when you're on the road and urgently need to top up your balance to avoid getting fined for unpaid travel.
There are several proven ways to access this data, each of which has its own characteristics depending on where and how the device was purchased. Some methods require physical access to the transponder itself, while others allow information to be found remotely through official communication channels. It is important to understand that contract number and personal account number - these are often different values, and you cannot confuse them when entering payment data, as this will lead to a transaction error.
Where to find the number on the device itself and in documents
The easiest and most reliable way to find out the identifier is to physically examine the transponder itself or study the documentation that came with it upon purchase. Manufacturers of electronic payment instruments such as T-Pass, 15-58, Autopass or ETC, usually put the serial number or contract number on the device body. However, you should be careful: the code printed on the plastic may be the serial number of the hardware itself, and not your personal personal account for payment.
The documentation issued upon purchase always contains a service agreement or a client memo. In these papers, the required numbers are indicated most clearly. If you purchased the device remotely, this data could have been sent to you by email in the form of a scanned copy of the contract or a PDF file with the terms of service. This is the number most often required to log into your account management system.
If only a long code of many characters is indicated on the device’s body, and the contract is lost, do not rush to enter this code in the “Personal Account” field on the payment site. First, try to find a QR code or barcode sticker, which is often placed on the packaging or on the transponder itself. Scanning this code with a smartphone camera can immediately redirect you to a page with account information or show the necessary numbers in a special application.
For accurate identification, use the following mapping table to understand exactly which code you need in a given situation:
| Code type | Where is it usually located? | What is it used for? |
|---|---|---|
| Personal account | Agreement, SMS, Personal account | Balance replenishment, authorization |
| Serial number | Device body, sticker on the back | Device registration, technical support |
| Contract number | First page of the contract | Legal issues, change of ownership |
⚠️ Warning: Never try to disassemble the transponder housing to find the number inside. This will damage the seal and instantly block the device by the operator, after which you will have to buy a new gadget.
Using the mobile application and personal account
Digitalization of services allows you to manage all payment parameters via a smartphone. If you have an official operator application installed (for example, Avtodor, 15-58, or universal applications for paying for parking and roads), your personal account number is usually displayed on the main screen immediately after authorization. The problem only occurs if you have forgotten your login information or have not yet registered in the system.
To restore access or search for a number through the application, it is often enough to enter the phone number to which the device was registered, or the number of the bank card with which it was linked for auto-replenishment. The system will automatically update your account information. In the “Profile” or “Settings” section you can always find the full personal account number, even if it is hidden on the main screen for security reasons.
If you use the web version of your personal account, the algorithm of actions is similar. After entering your login (often email or phone) and password, go to the “My devices” or “Account details” section. The full personal account number, which can be copied for use in other services. Some systems allow you to link your account via social networks or Public services, making it easy to log in without having to remember complex passwords.
What to do if the application does not see the device?
If the app says "Device not found", check if the transponder is activated. A new device may require first activation through a website or a call to the operator. Also make sure that you are using the latest version of the application, as older versions may not support new server communication protocols.
It is important to note that in some applications the personal account number may be partially hidden (for example, **1234) for security reasons. To see it in full, you often need to click on the special “eye” icon or confirm the action via SMS code. This is a standard procedure for protecting users' personal data.
Searching for information via SMS notifications and email
Payment system operators are required to inform clients about all movements of funds in the account. If you have ever topped up your balance or driven through a toll section, you should have received an SMS notification or an email on your phone. These messages almost always contain the personal account number, since it serves as the main identifier of the transaction.
To search, use the message search function on your phone. Enter the keywords in the search bar: “balance”, “replenishment”, “transponder”, “payment” or the name of the operator (for example, “Autopass”). Review your message history for the past few months. In the SMS text you often find a phrase like: “Received on LAN 1234567890...”, where the numbers are the number you are looking for.
The situation is similar with email. Check your “Inbox” folder, as well as “Spam” or “Promotions”, where automatic mailings from payment systems may land. Emails with the subject line "Check", "Receipt" or "Travel Notice" contain complete account information. If you have lost access to your phone or email, this method, unfortunately, will not help, and you will have to use other recovery methods.
If you find an SMS, but the number seems incomplete or contains extra characters, try copying only the digital part. Sometimes messages are added with region prefixes or operator codes, which can cause an error when entered manually on the website. In this case, it is better to copy the entire number and paste it into the input field, and then delete the extra characters if the system generates a format error.
Save your account number in your phone notes or write it down in your wallet. This will save you from the need to search for information in a stressful situation, when you urgently need to pay for travel, but the Internet is not at hand.
Contacting support and hotlines
When an independent search does not produce results, the most effective way is direct contact with the system operator. Hotlines operate around the clock, and operators have access to a database where they can find your account using alternative data. You don't need to know the account number to find it - just provide information that only you know.
To identify an individual, the operator may request the following data:
- 📞 Phone number specified when registering the device.
- 💳 Last 4 digits of the bank card from which the payment was made.
- 🚗 State number of the car linked to the transponder.
- 📍 Date and approximate time of the last trip or payment.
The conversation with the operator may take some time, as the specialist must go through a verification procedure. Be prepared to clearly dictate numbers and answer security questions. If you are calling from a number that is not registered in the system, the identification process may be complicated or impossible for security reasons. In this case, it is better to call from your “native” phone number.
Some operators also support communication via instant messengers (Telegram, WhatsApp, Viber) or chatbots. This is a convenient method, as it allows you to send a screenshot of a receipt or a photo of the device (if it has visible numbers), which speeds up the search process. Chatbots can automatically issue a personal account number immediately after entering a phone number, without waiting for an operator.
⚠️ Attention: The operator will never ask you for your card’s CVC code or full PIN code. If you receive a call asking for this information to “unblock your account,” these are scammers. Hang up and call the official number yourself.
Verification through banking application and transaction history
If you linked a bank card to automatically top up your balance or simply paid for travel manually through online banking, traces of this operation remained in the transaction history. This is one of the fastest ways to find a number without contacting any support services. Banking applications now have convenient search and payment details.
Go to your bank's app and open the transaction history for the card you used to pay for roads. Find the payment made to the transponder operator (names may be abbreviated, for example, “AVTODOR”, “PLATON”, “15-58”). Click on this transaction to open a detailed receipt.
In the payment details, in the “Payment purpose”, “Comment” or “Recipient’s personal account” field, your identifier is often written down. Even if only the contract number is indicated there, it may coincide with the personal account or be the key to finding it on the operator’s website. In some cases, the payment purpose indicates a combination: telephone number and LAN number.
If the number is not clearly visible in your banking app, try looking for the “Repeat payment” or “Pay again” button. When you go to the payment form, the system can automatically enter the saved details, and in the “Personal Account” field you will see the necessary numbers. This works in many popular banking apps that remember payment patterns.
☑️ Check your data before calling support
Restoring access if all data is lost
The situation when a contract, a telephone, and access to mail are lost is rare, but it can be solved. In this case, a personal visit to the sales and customer service office of the system operator will be required. This is the most labor-intensive and time-consuming path, but it guarantees that access to the account is restored and all necessary data is obtained.
When visiting the office, be sure to take with you your passport and documents for the car to which the transponder was linked. If the device was not purchased by you, but, for example, by an employer or family member, a power of attorney or the presence of the owner may be required. An office employee will find your contract using the database (via the license plate number of the car or the serial number of the device, if it is preserved on the box).
After identification, you will be given a duplicate of the contract or a certificate indicating your personal account number. The employee will also help you restore access to your personal account, change your phone number to a current one, and re-issue access to the mobile application. This is the only way to access the account if the previous owner of the phone number is no longer available.
In some cases, if the device was purchased second-hand along with the car, the new owner may find that the account is registered in the name of the previous owner. In such a situation, it is easier and safer to terminate the old contract (if there are contacts of the previous owner) and enter into a new one, registering the transponder in your name. Using someone else's personal account can lead to legal complications and blocking of funds.
The fastest way to find a number is to look at the SMS from the operator or payment details in the banking application. If this is not possible, call the hotline from the linked phone number.
Frequently asked questions (FAQ)
Is it possible to find out the personal account number only by the license plate number of the car?
Directly through open access on the Internet - no, this is confidential information. However, the support operator can find your account by state number if you confirm your identity with other data (for example, a passport during a personal visit or a code word, if one has been established).
What to do if your personal account number is not suitable for payment?
Make sure that you do not confuse your personal account with the contract number or device serial number. Try entering the number without spaces or additional characters. If the error persists, contact support as the account may have been changed or blocked.
Is it possible to combine two personal accounts from different transponders?
Typically, operators do not allow combining the balances of different personal accounts, since these are different contractual relationships. However, you can link several devices to one main account (wallet) in your personal account, if your tariff plan allows it. Check with your operator for this option.
Where can I find the number if the transponder was purchased from a leasing company?
If the car and transponder are leased, all data is kept by the lessor. You need to contact your company's accounting or fleet department. In such cases, it is often impossible to independently manage the account without the permission of the legal owner.
How long is travel history stored on a personal account?
According to the rules of most operators, a detailed history of trips and payments in your personal account is available for the last 6–12 months. Older data may be archived and will require a written request to Help Desk or Service Office to obtain it.