| Area Code▲ | City↕ | Administrative Region↕ | City Population↕ | Country/Region | Timezone |
|---|
| 5320 | Karavelyovo | Burgas Province | — | Bulgaria | Europe/Sofia |
| 5735 | Kraishte, Blagoevgrad Province | Blagoevgrad Province | — | Bulgaria | Europe/Sofia |
| 6717 | Kmetcheta | Gabrovo Province | — | Bulgaria | Europe/Sofia |
| 8152 | Karali | Dobrich Province | — | Bulgaria | Europe/Sofia |