| Area Code▲ | Lungsod↕ | Namamahalang Rehiyon↕ | Populasyon ng Siyudad↕ | Bansa/Rehiyon | Oras ng Dako |
|---|
| 250 | — | — | 3,205,060 | Mauritania | Africa/Nouakchott |
| 258 | — | — | 3,205,060 | Mauritania | Africa/Nouakchott |
| 45 | Nouakchott | District de Nouakchott | 661,400 | Mauritania | Africa/Nouakchott |
| 4513 | Néma | Hodh ech Chargui | 60,000 | Mauritania | Africa/Nouakchott |
| 4515 | El ’Ayoûn | Assaba | — | Mauritania | Africa/Nouakchott |
| 452 | — | — | 3,205,060 | Mauritania | Africa/Nouakchott |
| 4533 | Kaédi | Gorgol | 55,374 | Mauritania | Africa/Nouakchott |
| 4534 | Sélibaby | Guidimaka | 18,424 | Mauritania | Africa/Nouakchott |
| 4537 | Aleg | Brakna | 15,211 | Mauritania | Africa/Nouakchott |
| 4544 | Zouerate | Tiris Zemmour | 38,000 | Mauritania | Africa/Nouakchott |
| 4546 | Atar | Adrar | 24,021 | Mauritania | Africa/Nouakchott |
| 4550 | Bogué | Brakna | — | Mauritania | Africa/Nouakchott |
| 4563 | Kiffa | Assaba | 40,281 | Mauritania | Africa/Nouakchott |
| 4569 | Tidjikja | Tagant | 6,000 | Mauritania | Africa/Nouakchott |
| 457 | — | — | 3,205,060 | Mauritania | Africa/Nouakchott |
| 4574 | Nouâdhibou | Dakhlet Nouadhibou | 72,337 | Mauritania | Africa/Nouakchott |