The A1 carrier from Bulgaria is denoted by codes: 284 01. The followings IDs are called HNI (Home network identity). This code is created by the combination of two other Mobile Country Code (MCC) and Mobile Network Code (MNC). The first three numbers stand for the MCC and they are used in order to identify the region which the carried comes from (in the following example it’s Bulgaria). The last numbers of the HNI code are equal with the MNC and this ID is given for the specific mobile network operator.
Besides A1 Bulgaria has assigned country code + 359. This number + 359 is equal with international calling code and it’s simply the telephone dialing prefixes used for calling A1 numbers.
A1 uses 2 GSM bands, 2 UMTS bands, 2 and 0 CDMA bands.. You can read the specific frequency bands in the table below. All bands of the A1 are display in MHz units.
Another important information in A1 Bulgaria architectures is the standard of used protocols. It also uses 9 protocols such as GSM, UMTS, LTE, CDMA.
The ISO standard code of A1 is BG. You can see more info about this mobile network operator at http://www.a1.bg/. How to check A1 coverage? How to check if your phone will work in Bulgaria? Those information will help you figure out if your device will work in the A1 roaming. Use out database and check out if your device will be locked or unlocked in A1.
Use our CARRIER LOOKUP TOOL in order to make sure that your phone number is using A1 network.
If you'd like to find out whether your device is going to work with A1 (Bulgaria), please check the details below:
All you need to do is compare bands specification from your mobile network with the bands used in your device. You can check the supported bands for your phone by using out phone database.
| Name | A1 |
|---|---|
| Company | A1 Telekom Austria Group |
| Country |  Bulgaria |
| Country ISO | BG |
| Country code | + 359 |
| Carrier website | http://www.a1.bg/ |
| Carrier codes |
|
| Mobile prefix | 88 |
| Size of NSN | 9 |
| Number format | +359 88x xxx xxx |
| Coverage map | Check A1 Coverage |
| Comment | Former Citron, Mobiltel, M-Tel. Users can switch carriers and keep their cell phone numbers (so prefixes are not strictly assigned to a specific carrier). |
| Subscribers | 2 918 000 (Q4 2022) |
| GSM bands |
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| GSM protocols |
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| UMTS bands |
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| UMTS protocols |
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| LTE bands |
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| LTE protocols |
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CHECK IMEI 
