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| Date | Type | Code | Nom |
|---|---|---|---|
| 2007-07-01 | Fusion association → fusion simple | 44131 | Pornic |
| 2007-07-01 | Fusion association → fusion simple | 44177 → 44131 | Sainte-Marie → Pornic |
| 1987-09-08 | Fusion association → fusion simple | 44042 → 44131 | Le Clion-sur-Mer → Pornic |
| 1987-09-08 | Fusion association → fusion simple | 44131 | Pornic |
| 1973-06-01 | Fusion-association | 44042 → 44131 | Le Clion-sur-Mer → Pornic |
| 1973-06-01 | Fusion-association | 44131 | Pornic |
| 1973-06-01 | Fusion-association | 44177 → 44131 | Sainte-Marie → Pornic |
| 1943-01-01 | Création | 44131 | Pornic |