A1 Bulgaria
- Rank in Country: 01
- Operator: A1 Bulgaria
- Type: National
- Technology: GSM 900 / GSM 1800 / UMTS 900 / UMTS 2100 / LTE 1800 / LTE 2100
- Ownership: A1
- MCC:284
- MNC: 01
- Status: Operational
- Description: Former Citron, Mobiltel, M-Tel
| Name | |
|---|---|
| Company | A1 Bulgaria |
| 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 | 3 973 000 (inc Bob) (Q2 2018) |
| 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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