| Country | France (FR) |
| UN/LOCODE | MSS |
| Name | Messac |
| Name Without Diacritics | Messac |
| Region | 17 |
| Function Code | --3----- |
| Function | Road |
| Status Code | RL (Recognised Location) |
| Date | 701 |
| Timezone | Europe/Paris |
| Location (UN Format) | 4521N 00019W |
| Latitude Longitude | 47.8245, -1.8089 |