| Area Code▲ | City↕ | Administrative Region↕ | City Population↕ | Country/Region | Timezone |
|---|
| 22 | Bandung | West Java | 1,699,719 | Indonesia | Asia/Jakarta |
| 25 | Bogor | West Java | 800,000 | Indonesia | Asia/Jakarta |
| 35 | Magetan Regency | East Java | — | Indonesia | Asia/Jakarta |
| 6 | Pematangsiantar | North Sumatra | 209,614 | Indonesia | Asia/Jakarta |
| 61 | Medan | North Sumatra | 1,750,971 | Indonesia | Asia/Jakarta |
| 621 | Tebingtinggilama | North Sumatra | — | Indonesia | Asia/Jakarta |
| 622 | Pematangsiantar | North Sumatra | 209,614 | Indonesia | Asia/Jakarta |
| 625 | Parapat | North Sumatra | — | Indonesia | Asia/Jakarta |
| 628 | Berastagi | North Sumatra | 44,765 | Indonesia | Asia/Jakarta |
| 636 | Natal, North Sumatra | North Sumatra | — | Indonesia | Asia/Jakarta |
| 639 | Teluk Dalam | North Sumatra | — | Indonesia | Asia/Jakarta |
| 751 | Padang Sidempuan | North Sumatra | 100,561 | Indonesia | Asia/Jakarta |
| 77 | Padang | West Sumatra | 840,352 | Indonesia | Asia/Jakarta |